【官方】可验证凭证操作指南

简介

本文档将指导您完成创建可验证凭证 (VC)、添加证明、传输 VC 和撤销证明的过程。

有关其他资源，请参阅以下内容：

• 可验证凭证 RPC 参考（https://docs.chia.net/vc-rpc/）

• 可验证凭证 CLI 参考（https://docs.chia.net/vc-cli）

• CHIP-16——Chia VC 的标准（https://github.com/Chia-Network/chips/pull/65）

• CHIP-17——通用 VC 元数据结构（https://github.com/Chia-Network/chips/pull/66）

• CHIP-18——KYC-VC证明结构（https://github.com/Chia-Network/chips/pull/67）

危险！

本指南中的命令仅为示例。请务必将列出的值替换为本地系统中的值。

本指南是使用 testnet10 创建的。示例命令使用 1 亿个 mojo 的费用，这对于主网使用来说相当高。如果在主网上运行，请务必相应调整您的费用。

定义

• 去中心化标识 (DID)——一种表示组织、个人或任何其他实体身份的去中心化方式

• 可验证凭证（VC）——允许某人或某物证明某个主体属于某个或多个类别，例如是美国公民。一种类型的 VC 由“了解你的客户”(KYC) 提供商颁发，该提供商必须执行此验证。

  在 Chia 术语中，VC 依赖于 DID。换句话说，需要 DID 才能在 Chia 的区块链上铸造 VC。

• 证明（Proof）——附加到 VC 的键值对

设置

先决条件

为了铸造 VC，您需要具备：

• 同步的 Chia 钱包（不需要完整节点）

• 创建 DID 的一个Mojo

• 创建 VC 单例的一个Mojo

• 足够的资金来支付区块链费用，费用金额取决于区块链在任何时刻的繁忙程度

建议您在主网上铸造 VC 之前先在测试网上测试铸造 VC。如果您不确定如何配置钱包以使用测试网，请参阅我们的指南（https://docs.chia.net/guides/chialisp-testnet-setup）。

如果您没有足够的资金来启动，我们还可以使用水龙头：

• 测试网（https://testnet10-faucet.chia.net/）

• 主网（https://faucet.chia.net/）

涉及实体

VC的发行和使用至少涉及两个实体：

1. 凭证主体/持有者——已申请 VC（又称主体）或当前持有 VC（又称持有者）的个人或实体

2. 证明提供者/证书颁发者——创建并签署 VC 的实体，从而声明有关持有者身份、属性或资格的声明，并在颁发给持有者的证书中为这些声明提供证明

要测试发行、铸造和撤销 VC，您需要创建单独的钱包来代表这两个实体。两个钱包可以在同一台计算机上共存。

注意：

从技术上讲，还涉及另一个实体：

3.验证者——验证VC真实性的实体

对于本指南，验证者是区块链本身。

生成DID

证明提供者必须拥有 DID 才能铸造 VC。要创建 DID，请从终端窗口或命令提示符运行以下命令：

chia wallet did create -m 0.0001

响应将包含新创建的 DID 的 ID（以 did:chia: 开头）。保存您的本地 DID ID 以供稍后使用（它将与此处显示的不同）：

Successfully created a DID wallet with name None and id 2 on key 1725104286
Successfully created a DID did:chia:1rnvmwp3wmglslk942mwsrmf7dlkluytyna8mgewel44h4ne3nd9slhtddg in the newly created DID wallet

DID 将通过链上交易创建。交易确认后，您可以通过运行 chia wallet show 查看您的 DID：

chia wallet show

回复：

Wallet height: 2795460
Sync status: Synced
Balances, fingerprint: 1725104286

Chia Wallet:
   -Total Balance:         4.999699999998 txch (4999699999998 mojo)
   -Pending Total Balance: 4.999699999998 txch (4999699999998 mojo)
   -Spendable:             4.999699999998 txch (4999699999998 mojo)
   -Type:                  STANDARD_WALLET
   -Wallet ID:             1

Provider_DID:
   -Total Balance:         1.0
   -Pending Total Balance: 1.0
   -Spendable:             1.0
   -Type:                  DECENTRALIZED_ID
   -DID ID:                did:chia:1rnvmwp3wmglslk942mwsrmf7dlkluytyna8mgewel44h4ne3nd9slhtddg
   -Wallet ID:             2

拥有同步的钱包和 DID 后，您就可以执行 VC 特定的命令了。

--CLI 指南--

本节将向您展示如何使用 Chia 的 wallet CLI 命令创建、转移和撤销 VC。下一节将介绍使用 RPC 的类似演练。

创建证明

首先，您必须将证明添加到本地数据库。为此，请运行 add_proof_reveal 命令。您可以通过重用 proof 参数来添加多个证明。例如：

chia wallet vcs add_proof_reveal --proof test_proof1 --proof test_proof2

响应将是一条简单的成功消息。该命令仅在本地添加证明；它不会修改区块链：

Proofs added to DB successfully!

要获取根哈希，请运行相同的命令并添加 --root-only 标志：

chia wallet vcs add_proof_reveal --proof test_proof1 --proof test_proof2 --root-only

回复：

Proof Hash: f063e22557705b14425b8fca60018796b4364eb6354f45d0b99431a71d3043e5

请务必记下您自己的根哈希值，因为您在创建 VC 时需要它。

重要的

当使用 CLI 添加证明时，每个证明的值为 1 。这在 CLI 中不可配置。如果您需要使用不同的值，请参阅 RPC 指南。

信息

如果您想从证明哈希中检索原始证明，请运行 get_proofs_for_root 命令：

chia wallet vcs get_proofs_for_root --proof-hash f063e22557705b14425b8fca60018796b4364eb6354f45d0b99431a71d3043e5

回复：

Proofs: - test_proof1 - test_proof2

请注意，只有当您已将相应的证明添加到本地数据库时，此命令才会成功。

铸造VC

要铸造 VC，请运行 mint 命令并使用 -d 参数传入铸造钱包拥有的 DID：

chia wallet vcs mint -d did:chia:1tu7xx74m6rqfew67upf4d7esnx5zj2m66p60lez7we6q7smwr4tqax8m7n -m 0.0001

响应将包含有关 VC 的一些信息，包括其 ID、铸造交易的 ID 以及 VC 的目标钱包：

New VC with launcher ID minted: 9883bb24810c2107c1ac10dd43a52959b2ab5a6bbf7e102e04232a4f2adcbc35
Relevant TX records:

Transaction 0d1cc44c3a341cb35006bc09cb081812fa1d35be7fd00f2caa0548bcc894805c
Status: Pending
Amount sent: 1E-12 XCH
To address: txch1wrr3hew9nr8ukenv3nwq0fg78h4uh5pm9shyqjl4rmfz9nuqcyxqcy8lth
Created at: 2023-06-23 12:34:13

默认情况下，VC 将被铸造到运行此命令的同一个钱包中。但是，您也可以使用 --target-address 参数将 VC 铸造到其他地址。

当 VC 第一次被铸造时，它不会包含任何证明。您可以通过运行 get 命令来验证这一点：

chia wallet vcs get

回复：

Proofs:

Launcher ID: 9883bb24810c2107c1ac10dd43a52959b2ab5a6bbf7e102e04232a4f2adcbc35
Coin ID: 8942dc321387287084a92e6451a01505e6771df81daa86937679eb1ef67abb4a
Inner Address: txch1wrr3hew9nr8ukenv3nwq0fg78h4uh5pm9shyqjl4rmfz9nuqcyxqcy8lth

此命令显示 Launcher ID （VC 的 ID），下一个命令将需要它。

之前，您将所需的证明添加到本地数据库并计算了根哈希。下一步是将这个根哈希添加到 VC 中，并同时将其发送给新的持有者。这是通过花费 VC 来实现的。

向 VC 添加证明

使用 update_proofs 命令将证明添加到 VC。该命令必须从证明提供者的钱包（包含用于铸造的 DID 的钱包）运行。

--new-proof-hash 参数为必填项；该哈希值包含在运行 add_proof_reveal 命令的响应中。

通常使用 --new-puzhash 参数，但不是必需的。此参数允许您在不同的钱包中重新创建 VC 单例（即，使用用于添加证明哈希的同一命令将 VC 发送给新持有者）。

注意

--new-puzhash 需要拼图哈希而不是钱包地址。如果您不确定如何将钱包地址转换为拼图哈希，Chia.tt 浏览器包含一个方便的拼图哈希转换器工具。如果您更喜欢以编程方式执行此转换，请使用 chia-dev-tools 存储库中的 decode 命令。

例如，以下命令将使用新的根哈希 ( -p ) 更新指定的 VC ( -l ) 并将 VC 发送到新钱包 ( -t ），同时包括区块链费用（ -m ）：

chia wallet vcs update_proofs -l 9883bb24810c2107c1ac10dd43a52959b2ab5a6bbf7e102e04232a4f2adcbc35 -t 0xcdedf8c5a40e3db41d4fc7a45a892838454953e059bcaa467b3257450c8c138f -p f063e22557705b14425b8fca60018796b4364eb6354f45d0b99431a71d3043e5 -m 0.0001

回复：

Proofs successfully updated!
Relevant TX records:

Transaction 873df058c0b3f56c3828cf3f1b893e00d2fe57069caf7556ca4f9941fc4e1de8
Status: Pending
Amount sent: 0 XCH
To address: txch1fatr3nkc9jgnetkv6vnqdkaxlmjgx8dt4a359t9akgllzfycenzqlghpll
Created at: 2023-06-23 12:48:15

Transaction c1ec7ee41ddb6e5369ea2d982bea90e4b11b91c5eee88662f37e05503b4aa945
Status: Pending
Amount sent: 1E-12 XCH
To address: txch1ehkl33dypc7mg820c7j94zfg8pz5j5lqtx7253nmxft52ryvzw8stx7czc
Created at: 2023-06-23 12:48:15

该交易在区块链上得到确认后，新的凭证持有者可以确认证据已包含在内。首先，凭证持有者需要运行与证明提供者相同的命令，将证明添加到本地数据库。例如：

chia wallet vcs add_proof_reveal --proof test_proof1 --proof test_proof2

回复：

Proofs added to DB successfully!

接下来，凭证持有者可以运行 get 命令：

chia wallet vcs get

在这种情况下，会显示一个 VC，以及证明哈希和两个证明。如果未手动将校样添加到本地数据库，则它们不会在此命令中显示，并且 GUI 会将 VC 显示为无效。

Proofs:
- f063e22557705b14425b8fca60018796b4364eb6354f45d0b99431a71d3043e5
  - test_proof1
  - test_proof2

Launcher ID: 9883bb24810c2107c1ac10dd43a52959b2ab5a6bbf7e102e04232a4f2adcbc35
Coin ID: 420f69cc8b541be7a0bf1d94ec028a8b2a875ee2cd6721f5316cf1b02519d13a
Inner Address: txch1ehkl33dypc7mg820c7j94zfg8pz5j5lqtx7253nmxft52ryvzw8stx7czc
Proof Hash: f063e22557705b14425b8fca60018796b4364eb6354f45d0b99431a71d3043e5

撤销VC

通常，证明提供者只需要铸造 VC、添加证明并将 VC 转移给新的持有者。然而，在某些时候，持有者的证明可能会发生变化。例如，持有人最初可能证明自己不是美国公民，后来又成为美国公民。

在这种情况下，证明提供者需要撤销凭证，即从 VC 中删除所有证明。（持有者将继续持有 VC，但它将不再包含任何证明。）我们不允许证明提供者收回 VC 本身，因为它有可能托管其他资产，尽管我们不允许还支持这个。

唯一允许撤销凭证的钱包是证明提供者的钱包（包含用于铸造 VC 的 DID 的钱包）。

为了运行撤销命令，证明提供者需要知道父代币 ID（ -p 参数）。因为 VC 是单例的，所以每次花费 VC 时（每次进行更改），它们的父代币 ID 都会发生变化。

出于测试目的，持有者的钱包可以通过运行 vc_get RPC 来获取母币 ID。父代币 ID 是 "parent_coin_info" 的值。在生产环境中，证明提供者将在链上跟踪 VC，并在撤销 VC 之前立即获取此信息。

撤销命令示例：

chia wallet vcs revoke -p 0x420f69cc8b541be7a0bf1d94ec028a8b2a875ee2cd6721f5316cf1b02519d13a -m 0.0001

结果，VC 将在同一个钱包中重新创建，但没有任何证明：

Relevant TX records:

Transaction 286cc31575aa167c4b34cbc0a768a162caefb6afea77560db0693934ac3fbf1e
Status: Pending
Amount sent: 1E-12 XCH
To address: txch1ehkl33dypc7mg820c7j94zfg8pz5j5lqtx7253nmxft52ryvzw8stx7czc
Created at: 2023-06-23 13:33:50

Transaction ae6378e84742ab6abb07df666291093938ec9e06ae8e2b4066d7386d94289ba3
Status: Pending
Amount sent: 0 XCH
To address: txch1mahlm65l8q9frcqcfveekx3a29cd74w6gfajqy05ukz2afrzg03syqkz3p
Created at: 2023-06-23 13:33:50

这些交易在链上得到确认后，VC 不再包含任何证据。持有人可以验证这一点：

chia wallet vcs get

 结果：

Proofs:

-- RPC 指南--

本节将向您展示如何使用 Chia 的钱包 RPC 铸造、转移和撤销 VC。RPC 命令通常会比 CLI 命令提供更详细的响应，但功能基本相同。

关于 Windows 命令转义的注意事项

本文档将使用 Linux/MacOS RPC 语法。在 Windows 上运行 rpc 命令时，您需要使用反斜杠转义所有引号。

例如，以下是 Linux 和 MacOS 上的典型 RPC 命令：

chia rpc wallet vc_get '{"vc_id": "13ba084e78475327e41c60df5a108965d7a283f065b5506e266ffb3563937b6c"}'

要在 Windows 上运行相同的命令，您需要转义引号，因此它看起来像这样（大括号已被删除以支持此页面的格式。您仍然需要在实际命令中使用它们。）

chia rpc wallet vc_get '\"vc_id\": \"13ba084e78475327e41c60df5a108965d7a283f065b5506e266ffb3563937b6c\"'

创建证明

首先，您必须将证明添加到本地数据库。为此，请运行 vc_add_proofs 命令。 "proofs" 是键值对的字典。与等效的 CLI 命令不同，此命令允许您使用任何字符串值。

chia rpc wallet vc_add_proofs '{"proofs": {"example_proof_1": "example_value_1", "example_proof_2": "example_value_2"}}'

响应是一个简单的 success 消息。该命令仅在本地添加证明；它不会修改区块链：

{
    "success": true
}

下一步是计算您刚刚添加的证明的根哈希。

根哈希计算

VC 的证明以 Merkle 树的形式呈现，其根哈希存储在链上。

在查找证明时，只需要提供一个称为“包含证明”的散列即可。区块链的任何第三方观察者都无法识别 VC 对应的是谁，但 KYC 提供商作为 VC 的发行者会知道此信息。

为了从一组证明构建 Merkle 树：

1. 将证明按密钥字母顺序逆序排序

2. 通过递归地将列表分成两半，将证明的键值对转换为二叉树

构建树后，可以通过递归遍历树、对叶子进行散列直到到达根来获得根散列。

没有用于计算根哈希的 RPC；相反，您需要以编程方式获取它（除非您对所有值使用 1 ，在这种情况下您可以使用 CLI 命令）。

例如，以下 Javascript 程序将输出 console.log 命令中列出的证明的根哈希：

JavaScript 示例

为了运行这个例子：

1. 将脚本复制到文本编辑器

2. 将最后一行中的键和值替换为您自己的证明中的键和值

3. 将脚本保存在本地，例如 calculate_proof_hash.js

4. 例如，通过调用 node calculate_proof_hash.js 来运行脚本该脚本

const { strict: assert } = require("node:assert");const crypto = require("crypto");
const std_hash = (s) => crypto.createHash("sha256").update(s).digest("hex");
const sort_pairs = (pairs) => pairs.sort(([a], [b]) => { if (a < b) { return 1; } if (a > b) { return -1; } return 0; });
const CHIA_TREE_HASH_ATOM_PREFIX = "01";const CHIA_TREE_HASH_PAIR_PREFIX = "02";
const tree_hash = (node) => { if (Array.isArray(node)) { // Only supporting pairs and utf-8 string/boolean atoms assert.equal(node.length, 2);
const left_hash = tree_hash(node[0]); const right_hash = tree_hash(node[1]);
// Hashes pair return std_hash(Buffer.concat([Buffer.from(CHIA_TREE_HASH_PAIR_PREFIX, "hex"), Buffer.from(left_hash, "hex"), Buffer.from(right_hash, "hex")])); } else { // Hashes string key if (typeof node === "string") { return std_hash(Buffer.concat([Buffer.from(CHIA_TREE_HASH_ATOM_PREFIX, "hex"), Buffer.from(node, "utf-8")])); }
// Hashes boolean value if (typeof node === "boolean") { return std_hash(Buffer.concat([Buffer.from(CHIA_TREE_HASH_ATOM_PREFIX, "hex"), Buffer.from(node ? "01" : "", "hex")])); }
// Only supporting pairs containing string keys and boolean values throw new Error("Unsupported type passed to hash function"); }};
// Convert sorted listed to binary tree to be hashedconst list_to_binary_tree = (objects) => { if (objects.length == 1) { return objects[0]; }
const mid = Math.floor(objects.length / 2); const first_half = objects.slice(0, mid); const second_half = objects.slice(mid, objects.length);
return [list_to_binary_tree(first_half), list_to_binary_tree(second_half)];};
const calculate_root_hash = (proofs) => { const kv_pairs = Object.entries(proofs); const sorted = sort_pairs(kv_pairs); const binary_tree = list_to_binary_tree(sorted); const result = tree_hash(binary_tree); return result;};
console.log(calculate_root_hash({"example_proof_1": "example_value_1", "example_proof_2": "example_value_2"}));

将输出您输入的证明的证明哈希。在此示例中，输出为：

96c9597578333c840f895f30af6d40b9f6c0d69100db1a13ae2e26e4c94acdd3

信息

如果您想从证明哈希中检索原始证明，请运行 vc_get_proofs_for_root 命令。例如：

chia rpc wallet vc_get_proofs_for_root '{"root": "96c9597578333c840f895f30af6d40b9f6c0d69100db1a13ae2e26e4c94acdd3"}'

回复：

{ "proofs": { "example_proof_1": "example_value_1", "example_proof_2": "example_value_2" }, "success": true}

请注意，只有当您已将相应的证明添加到本地数据库时，此命令才会成功。

铸造VC

要铸造 VC，请运行 vc_mint 命令。did_id 参数是必需的。这是铸币钱包拥有的 DID。您还可以选择传入 target_address ，VC 将在其中传递。如果缺少此参数，VC 将被发送到拥有 DID 的同一个钱包：

{
    "success": true,
    "transactions": [
        {
            "additions": [
                {
                    "amount": 1,
                    "parent_coin_info": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e",
                    "puzzle_hash": "0x8b75b2ced8cdd1081021552f490618fb8b0c39e46ee5c5f9d46b6b7f9d8a8a74"
                },
                {
                    "amount": 1,
                    "parent_coin_info": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136",
                    "puzzle_hash": "0x34557d1304533235fa1713a5eafcb23ffca18e8696c0d4fb92bd02c901c9d556"
                },
                {
                    "amount": 1,
                    "parent_coin_info": "0xfcf2249962009aadae936bf5198095f0b1d3e89f5dc8d08be7e3ccb5123af2d8",
                    "puzzle_hash": "0xeff07522495060c066f66f32acc2a77e3a3e737aca8baea4d1a64ea4cdc13da9"
                },
                {
                    "amount": 4999799999998,
                    "parent_coin_info": "0xfcf2249962009aadae936bf5198095f0b1d3e89f5dc8d08be7e3ccb5123af2d8",
                    "puzzle_hash": "0x75f7052246d2da738d105b735e7f3fa945f93270d5d5c6e18ea9ef7eaa939632"
                }
            ],
            "amount": 1,
            "confirmed": false,
            "confirmed_at_height": 0,
            "created_at_time": 1687537068,
            "fee_amount": 100000000,
            "memos": {
                "1b4136963ef41ece657772ef70ca9d23b03c42a16ecb8f57748d7fdc90e0987b": "22718ff70dd4317538ad144b514b80f0413d8a88f6c60ee1f795dc116c9dbe4b"
            },
            "name": "0xfc09b898b5d667ab15ea76015b274309f9fc2254767e3d0def58a645939f63ba",
            "removals": [
                {
                    "amount": 1,
                    "parent_coin_info": "0xfcf2249962009aadae936bf5198095f0b1d3e89f5dc8d08be7e3ccb5123af2d8",
                    "puzzle_hash": "0xeff07522495060c066f66f32acc2a77e3a3e737aca8baea4d1a64ea4cdc13da9"
                },
                {
                    "amount": 1,
                    "parent_coin_info": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e",
                    "puzzle_hash": "0x8b75b2ced8cdd1081021552f490618fb8b0c39e46ee5c5f9d46b6b7f9d8a8a74"
                },
                {
                    "amount": 4999899999999,
                    "parent_coin_info": "0xe4e28034d312cbba0e2809dbed5475e2dc20742158eefa48c05bcea195b78308",
                    "puzzle_hash": "0x75f7052246d2da738d105b735e7f3fa945f93270d5d5c6e18ea9ef7eaa939632"
                }
            ],
            "sent": 0,
            "sent_to": [],
            "spend_bundle": {
                "aggregated_signature": "0x9980f93b32587b3331997b27667067c3701569ebb8844c41602303bdc58c33a07f45e373d12f7cef8ef1e35dcd3679f30957493b325dbe4f536f19003a7ad45138a9c8951593f51176f3400852029404f5b2490a1ee4983dd0f57b90da9d23e1",
                "coin_spends": [
                    {
                        "coin": {
                            "amount": 1,
                            "parent_coin_info": "0xfcf2249962009aadae936bf5198095f0b1d3e89f5dc8d08be7e3ccb5123af2d8",
                            "puzzle_hash": "0xeff07522495060c066f66f32acc2a77e3a3e737aca8baea4d1a64ea4cdc13da9"
                        },
                        "puzzle_reveal": "0xff02ffff01ff04ffff04ff04ffff04ff05ffff04ff0bff80808080ffff04ffff04ff0affff04ffff02ff0effff04ff02ffff04ffff04ff05ffff04ff0bffff04ff17ff80808080ff80808080ff808080ff808080ffff04ffff01ff33ff3cff02ffff03ffff07ff0580ffff01ff0bffff0102ffff02ff0effff04ff02ffff04ff09ff80808080ffff02ff0effff04ff02ffff04ff0dff8080808080ffff01ff0bffff0101ff058080ff0180ff018080",
                        "solution": "0xffa08b75b2ced8cdd1081021552f490618fb8b0c39e46ee5c5f9d46b6b7f9d8a8a74ff01ff8080"
                    },
                    {
                        "coin": {
                            "amount": 1,
                            "parent_coin_info": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e",
                            "puzzle_hash": "0x8b75b2ced8cdd1081021552f490618fb8b0c39e46ee5c5f9d46b6b7f9d8a8a74"
                        },
                        "puzzle_reveal": "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",
                        "solution": "0xffffa0fcf2249962009aadae936bf5198095f0b1d3e89f5dc8d08be7e3ccb5123af2d8ff0180ff01ffffffff01ffff33ffa05f405810abf8d6e690cfcea3409300e71b23a8362b47068d88d7aaa296278aafff01ffffa022718ff70dd4317538ad144b514b80f0413d8a88f6c60ee1f795dc116c9dbe4b8080ffff01ffa022718ff70dd4317538ad144b514b80f0413d8a88f6c60ee1f795dc116c9dbe4b80ffff81f6ffa01cd9b7062eda3f0fd8b556dd01ed3e6fedfe11649f4fb465d9fd6b7acf319b4bffa0e00c460366d00066f75597edfb72ddfcfd0d336d67f85dc2671498900ba2810e8080ff80808080"
                    },
                    {
                        "coin": {
                            "amount": 4999899999999,
                            "parent_coin_info": "0xe4e28034d312cbba0e2809dbed5475e2dc20742158eefa48c05bcea195b78308",
                            "puzzle_hash": "0x75f7052246d2da738d105b735e7f3fa945f93270d5d5c6e18ea9ef7eaa939632"
                        },
                        "puzzle_reveal": "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",
                        "solution": "0xff80ffff01ffff33ffa0eff07522495060c066f66f32acc2a77e3a3e737aca8baea4d1a64ea4cdc13da9ff0180ffff33ffa075f7052246d2da738d105b735e7f3fa945f93270d5d5c6e18ea9ef7eaa939632ff86048c1b4d8dfe80ffff34ff8405f5e10080ffff3dffa08426eba36496cbf0da25676027ead2830a9fb38f171256e52d788648a17acae280ffff3dffa0cab37fa0941e854e034e8d93762c554047f71ecd897807aba1f822e2f6ed38678080ff8080"
                    }
                ]
            },
            "to_address": "txch1yfcclacd6sch2w9dz394zjuq7pqnmz5g7mrqac0hjhwpzmyahe9sqetxaz",
            "to_puzzle_hash": "0x22718ff70dd4317538ad144b514b80f0413d8a88f6c60ee1f795dc116c9dbe4b",
            "trade_id": null,
            "type": 1,
            "wallet_id": 1
        }
    ],
    "vc_record": {
        "confirmed_at_height": 0,
        "vc": {
            "coin": {
                "amount": 1,
                "parent_coin_info": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136",
                "puzzle_hash": "0x34557d1304533235fa1713a5eafcb23ffca18e8696c0d4fb92bd02c901c9d556"
            },
            "eml_lineage_proof": {
                "amount": 1,
                "inner_puzzle_hash": null,
                "parent_name": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e",
                "parent_proof_hash": null
            },
            "inner_puzzle_hash": "0x22718ff70dd4317538ad144b514b80f0413d8a88f6c60ee1f795dc116c9dbe4b",
            "launcher_id": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e",
            "proof_hash": null,
            "proof_provider": "0x1cd9b7062eda3f0fd8b556dd01ed3e6fedfe11649f4fb465d9fd6b7acf319b4b",
            "singleton_lineage_proof": {
                "amount": 1,
                "inner_puzzle_hash": "0x43309e9613bc9d8156b52cfe1e396b43448c59286bf0b3d3dd283eeea7eb9c09",
                "parent_name": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e"
            }
        }
    }
}

当 VC 第一次被铸造时，它不会包含任何证明。

之前，您将所需的证明添加到本地数据库并计算了根哈希。下一步是将您的根哈希添加到 VC。

向 VC 添加证明

在 Chia 中，单例是一种原始标准，允许在使用硬币时以不同的属性重新创建它。Chia VC 是单例；使用 vc_spend 命令花费 VC 并使用一组新的证明重新创建它。

new_proof_hash 参数为必填项；这是您之前获得的根哈希。

通常使用 new_puzhash 参数，但不是必需的。此参数允许您在不同的钱包中重新创建 VC 单例（即，使用用于添加证明哈希的同一命令将 VC 发送给新持有者）。

注意

new_puzhash 需要拼图哈希而不是钱包地址。如果您不确定如何将钱包地址转换为拼图哈希，Chia.tt 浏览器包含一个方便的拼图哈希转换器工具。如果您更喜欢以编程方式执行此转换，请使用 chia-dev-tools 存储库中的 decode 命令。

例如，此命令将使用 new_proof_hash 更新指定的 vc_id 并将 VC 发送到 new_puzhash ，同时包含区块链 fee :

chia rpc wallet vc_spend '{"vc_id": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e", "new_puzhash": "0x08db957a6ab52313b44a0026768282ae3147db03d6526b98e39b4b962a1d6088", "new_proof_hash": "96c9597578333c840f895f30af6d40b9f6c0d69100db1a13ae2e26e4c94acdd3", "fee": 100000000}'

响应包括用于花费 VC 的支出捆绑包：

{
    "success": true,
    "transactions": [
        {
            "additions": [
                {
                    "amount": 4999699999998,
                    "parent_coin_info": "0x653a6248d7c2b308a35fd8b3f529c9dc485ba76f87621a4b62143edd06dd7be0",
                    "puzzle_hash": "0xc32479a76e578a51deb053c32a2116bb9cc3b80f49d26b5aaa58d032b3770058"
                }
            ],
            "amount": 0,
            "confirmed": false,
            "confirmed_at_height": 0,
            "created_at_time": 1687537276,
            "fee_amount": 100000000,
            "memos": {},
            "name": "0xf5c90151aaddb6deedf0a539a6d79c7f672b42e5d5cc5e61c57f7480f0ceeb6a",
            "removals": [
                {
                    "amount": 4999799999998,
                    "parent_coin_info": "0xfcf2249962009aadae936bf5198095f0b1d3e89f5dc8d08be7e3ccb5123af2d8",
                    "puzzle_hash": "0x75f7052246d2da738d105b735e7f3fa945f93270d5d5c6e18ea9ef7eaa939632"
                }
            ],
            "sent": 0,
            "sent_to": [],
            "spend_bundle": null,
            "to_address": "txch1s6a6j3rkeahqcf02ujm7m5nmkvzqr66n49cx3qlunqm9h8s46asqm0tk5d",
            "to_puzzle_hash": "0x86bba94476cf6e0c25eae4b7edd27bb30401eb53a9706883fc98365b9e15d760",
            "trade_id": null,
            "type": 1,
            "wallet_id": 1
        },
        {
            "additions": [
                {
                    "amount": 1,
                    "parent_coin_info": "0x1b4136963ef41ece657772ef70ca9d23b03c42a16ecb8f57748d7fdc90e0987b",
                    "puzzle_hash": "0xaff7139c2d31a2e4244d745baad309c857edf7dc4190e0619f475a80d1099906"
                },
                {
                    "amount": 1,
                    "parent_coin_info": "0x720630bc5e8d8dbddb297f96f765a1eec34e7fd9fc333f143c359cf16858d290",
                    "puzzle_hash": "0x56d7629bc6b66c3b6ab9765c53603961fe7fab44b5985e038ba06f56a3ad26b5"
                },
                {
                    "amount": 4999699999998,
                    "parent_coin_info": "0x653a6248d7c2b308a35fd8b3f529c9dc485ba76f87621a4b62143edd06dd7be0",
                    "puzzle_hash": "0xc32479a76e578a51deb053c32a2116bb9cc3b80f49d26b5aaa58d032b3770058"
                }
            ],
            "amount": 1,
            "confirmed": false,
            "confirmed_at_height": 0,
            "created_at_time": 1687537276,
            "fee_amount": 100000000,
            "memos": {
                "a3981ceeb0a4b0c443d0d9b7c9c6777960978f96b1c7f522111e31dce4076d07": "08db957a6ab52313b44a0026768282ae3147db03d6526b98e39b4b962a1d6088",
                "afa6c6e09641c42b484392772902be8809c76c7790dd39742606f045a14040c0": "070216d3ac8d37d1fc72e4259c7a96103e4de49935c9a8b7ab7ebe78513fae02"
            },
            "name": "0x17c5e475f9bcda500ef12484d0aca31c0674cd4f10bf90456f30344963d7ef76",
            "removals": [
                {
                    "amount": 1,
                    "parent_coin_info": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136",
                    "puzzle_hash": "0x34557d1304533235fa1713a5eafcb23ffca18e8696c0d4fb92bd02c901c9d556"
                },
                {
                    "amount": 1,
                    "parent_coin_info": "0xddb4dcaa641f2c10b7373a2bbf8571b4f761aea557f27e816a913a0b1fb5d1ec",
                    "puzzle_hash": "0x56d7629bc6b66c3b6ab9765c53603961fe7fab44b5985e038ba06f56a3ad26b5"
                },
                {
                    "amount": 4999799999998,
                    "parent_coin_info": "0xfcf2249962009aadae936bf5198095f0b1d3e89f5dc8d08be7e3ccb5123af2d8",
                    "puzzle_hash": "0x75f7052246d2da738d105b735e7f3fa945f93270d5d5c6e18ea9ef7eaa939632"
                }
            ],
            "sent": 0,
            "sent_to": [],
            "spend_bundle": {
                "aggregated_signature": "0xafd0baafa738e7cfffe67c1acaa34e0b3d38c0c2e7922dac3f4a0de77ab4c888a9bef3789d796af83ba87a3a17560f831090f7286480aa09e36fde23b6e515df5c311f0b82c6a500c178172df8c873deafe1b1344a3449f61d7f8fb0d075c428",
                "coin_spends": [
                    {
                        "coin": {
                            "amount": 1,
                            "parent_coin_info": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136",
                            "puzzle_hash": "0x34557d1304533235fa1713a5eafcb23ffca18e8696c0d4fb92bd02c901c9d556"
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                        "puzzle_reveal": 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                        },
                        "puzzle_reveal": "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",
                        "solution": "0xff80ffff01ffff33ffa0c32479a76e578a51deb053c32a2116bb9cc3b80f49d26b5aaa58d032b3770058ff86048c1557acfe80ffff34ff8405f5e10080ffff3cffa0278da82ea9c4053cc2d189918632e819348b923d5ec600d41f7761c68a9e1be080ffff3dffa048f300a9148586907532753631c608149514c98ba6ea0e4415ba7c9ab29b745d8080ff8080"
                    }
                ]
            },
            "to_address": "txch1prde27n2k5338dz2qqn8dq5z4cc50kcr6efxhx8rnd9ev2savzyq0ew26n",
            "to_puzzle_hash": "0x08db957a6ab52313b44a0026768282ae3147db03d6526b98e39b4b962a1d6088",
            "trade_id": null,
            "type": 1,
            "wallet_id": 4
        }
    ]
}

该交易在区块链上得到确认后，新的凭证持有者可以确认证据已包含在内。首先，凭证持有者需要运行与证明提供者相同的命令，将证明添加到本地数据库。例如：

chia rpc wallet vc_add_proofs '{"proofs": {"example_proof_1": "example_value_1", "example_proof_2": "example_value_2"}}'

回复：

{
    "success": true
}

接下来，凭证持有者可以运行 vc_get RPC：

chia rpc wallet vc_get '{"vc_id": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e"}'

结果：

{
    "success": true,
    "vc_record": {
        "confirmed_at_height": 2813720,
        "vc": {
            "coin": {
                "amount": 1,
                "parent_coin_info": "0x1b4136963ef41ece657772ef70ca9d23b03c42a16ecb8f57748d7fdc90e0987b",
                "puzzle_hash": "0xaff7139c2d31a2e4244d745baad309c857edf7dc4190e0619f475a80d1099906"
            },
            "eml_lineage_proof": {
                "amount": 1,
                "inner_puzzle_hash": "0x5f405810abf8d6e690cfcea3409300e71b23a8362b47068d88d7aaa296278aaf",
                "parent_name": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136",
                "parent_proof_hash": "0x69037cc8334927175cffb30007545a95a9b06b56b0ebcec8213cc26adad3f43b"
            },
            "inner_puzzle_hash": "0x08db957a6ab52313b44a0026768282ae3147db03d6526b98e39b4b962a1d6088",
            "launcher_id": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e",
            "proof_hash": "0x96c9597578333c840f895f30af6d40b9f6c0d69100db1a13ae2e26e4c94acdd3",
            "proof_provider": "0x1cd9b7062eda3f0fd8b556dd01ed3e6fedfe11649f4fb465d9fd6b7acf319b4b",
            "singleton_lineage_proof": {
                "amount": 1,
                "inner_puzzle_hash": "0x72404cf61f085ad55ee5632646aedb69e0129eaa4a8910a0f579c46f9bfd317c",
                "parent_name": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136"
            }
        }
    }
}

凭证持有者还可以调用 vc_get_list RPC 来获取该钱包控制的 VC 的完整列表以及所有存储的证明：

chia rpc wallet vc_get_list

回复：

{
    "proofs": {
        "96c9597578333c840f895f30af6d40b9f6c0d69100db1a13ae2e26e4c94acdd3": {
            "example_proof_1": "example_value_1",
            "example_proof_2": "example_value_2"
        }
    },
    "success": true,
    "vc_records": [
        {
            "coin_id": "0xa3981ceeb0a4b0c443d0d9b7c9c6777960978f96b1c7f522111e31dce4076d07",
            "confirmed_at_height": 2813720,
            "vc": {
                "coin": {
                    "amount": 1,
                    "parent_coin_info": "0x1b4136963ef41ece657772ef70ca9d23b03c42a16ecb8f57748d7fdc90e0987b",
                    "puzzle_hash": "0xaff7139c2d31a2e4244d745baad309c857edf7dc4190e0619f475a80d1099906"
                },
                "eml_lineage_proof": {
                    "amount": 1,
                    "inner_puzzle_hash": "0x5f405810abf8d6e690cfcea3409300e71b23a8362b47068d88d7aaa296278aaf",
                    "parent_name": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136",
                    "parent_proof_hash": "0x69037cc8334927175cffb30007545a95a9b06b56b0ebcec8213cc26adad3f43b"
                },
                "inner_puzzle_hash": "0x08db957a6ab52313b44a0026768282ae3147db03d6526b98e39b4b962a1d6088",
                "launcher_id": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e",
                "proof_hash": "0x96c9597578333c840f895f30af6d40b9f6c0d69100db1a13ae2e26e4c94acdd3",
                "proof_provider": "0x1cd9b7062eda3f0fd8b556dd01ed3e6fedfe11649f4fb465d9fd6b7acf319b4b",
                "singleton_lineage_proof": {
                    "amount": 1,
                    "inner_puzzle_hash": "0x72404cf61f085ad55ee5632646aedb69e0129eaa4a8910a0f579c46f9bfd317c",
                    "parent_name": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136"
                }
            }
        }
    ]
}

撤销VC

通常，证明提供者只需要铸造 VC、添加证明并将 VC 转移给新的持有者。然而，在某些时候，持有者的证明可能会发生变化。例如，持有人最初可能证明自己不是美国公民，后来又成为美国公民。

在这种情况下，证明提供者需要撤销凭证，即从 VC 中删除所有证明。（持有者将继续持有 VC，但它将不再包含任何证明。）我们不允许证明提供者收回 VC 本身，因为它有可能托管其他资产，尽管我们不允许还支持这个。

唯一允许撤销凭证的钱包是证明提供者的钱包（包含用于铸造 VC 的 DID 的钱包）。

为了运行 vc_revoke 命令，证明提供者需要知道父代币 ID（ vc_parent_id 参数）。

出于测试目的，持有者的钱包可以通过运行 vc_get RPC 来获取母币 ID。在生产环境中，证明提供者将在链上跟踪 VC，并在撤销 VC 之前立即获取此信息。

chia rpc wallet vc_get '{"vc_id": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e"}'

响应将包含有关 VC 的相关信息，包括其 parent_coin_info ：

{
    "success": true,
    "vc_record": {
        "confirmed_at_height": 2813720,
        "vc": {
            "coin": {
                "amount": 1,
                "parent_coin_info": "0x1b4136963ef41ece657772ef70ca9d23b03c42a16ecb8f57748d7fdc90e0987b",
                "puzzle_hash": "0xaff7139c2d31a2e4244d745baad309c857edf7dc4190e0619f475a80d1099906"
            },
            "eml_lineage_proof": {
                "amount": 1,
                "inner_puzzle_hash": "0x5f405810abf8d6e690cfcea3409300e71b23a8362b47068d88d7aaa296278aaf",
                "parent_name": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136",
                "parent_proof_hash": "0x69037cc8334927175cffb30007545a95a9b06b56b0ebcec8213cc26adad3f43b"
            },
            "inner_puzzle_hash": "0x08db957a6ab52313b44a0026768282ae3147db03d6526b98e39b4b962a1d6088",
            "launcher_id": "0xd2097d50519925faa13b224257a4e5ddca4f5234230fc5b1606552325a2d3a4e",
            "proof_hash": "0x96c9597578333c840f895f30af6d40b9f6c0d69100db1a13ae2e26e4c94acdd3",
            "proof_provider": "0x1cd9b7062eda3f0fd8b556dd01ed3e6fedfe11649f4fb465d9fd6b7acf319b4b",
            "singleton_lineage_proof": {
                "amount": 1,
                "inner_puzzle_hash": "0x72404cf61f085ad55ee5632646aedb69e0129eaa4a8910a0f579c46f9bfd317c",
                "parent_name": "0x64c61415d7e8dc212cefde59602aebeba2388fbb2fd559508e6a24988e625136"
            }
        }
    }
}

然后，撤销命令使用 parent_coin_info 作为 vc_parent_id 参数：

chia rpc wallet vc_revoke '{"vc_parent_id": "0x1b4136963ef41ece657772ef70ca9d23b03c42a16ecb8f57748d7fdc90e0987b", "fee": 100000000}'

结果，VC 将在同一个钱包中重新创建，但没有任何证明：

{
    "success": true,
    "transactions": [
        {
            "additions": [
                {
                    "amount": 1,
                    "parent_coin_info": "0xa3981ceeb0a4b0c443d0d9b7c9c6777960978f96b1c7f522111e31dce4076d07",
                    "puzzle_hash": "0x160c23f1632e49d5d2d978805d9319f242745f607525b72b55bee2a10e2206f2"
                },
                {
                    "amount": 1,
                    "parent_coin_info": "0xafa6c6e09641c42b484392772902be8809c76c7790dd39742606f045a14040c0",
                    "puzzle_hash": "0x56d7629bc6b66c3b6ab9765c53603961fe7fab44b5985e038ba06f56a3ad26b5"
                }
            ],
            "amount": 1,
            "confirmed": false,
            "confirmed_at_height": 0,
            "created_at_time": 1687537712,
            "fee_amount": 100000000,
            "memos": {
                "c5b0a0ad6dd223b30ba36f92c02bed3daae0c18112523bde11c4e3b41bbeea7e": "070216d3ac8d37d1fc72e4259c7a96103e4de49935c9a8b7ab7ebe78513fae02"
            },
            "name": "0xafdcc45f0ec1caf4d573b6702671c1c89ff57a0b8e8dc8a200a85b3e1f944600",
            "removals": [
                {
                    "amount": 1,
                    "parent_coin_info": "0x1b4136963ef41ece657772ef70ca9d23b03c42a16ecb8f57748d7fdc90e0987b",
                    "puzzle_hash": "0xaff7139c2d31a2e4244d745baad309c857edf7dc4190e0619f475a80d1099906"
                },
                {
                    "amount": 1,
                    "parent_coin_info": "0x720630bc5e8d8dbddb297f96f765a1eec34e7fd9fc333f143c359cf16858d290",
                    "puzzle_hash": "0x56d7629bc6b66c3b6ab9765c53603961fe7fab44b5985e038ba06f56a3ad26b5"
                }
            ],
            "sent": 0,
            "sent_to": [],
            "spend_bundle": {
                "aggregated_signature": "0xa3bf587c41b621096a761b79482ceca9db46fa31641b4bbfd68187cfd210233c4a92f365dbd37f03483f50c95adf06fb0796ba0b73711a3ebcd1750e7f3da44bc20f5180c146863b11c3e77bb9e0f0d84722c032105b99cc26dfca718db9f385",
                "coin_spends": [
                    {
                        "coin": {
                            "amount": 4999699999998,
                            "parent_coin_info": "0x653a6248d7c2b308a35fd8b3f529c9dc485ba76f87621a4b62143edd06dd7be0",
                            "puzzle_hash": "0xc32479a76e578a51deb053c32a2116bb9cc3b80f49d26b5aaa58d032b3770058"
                        },
                        "puzzle_reveal": "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",
                        "solution": "0xff80ffff01ffff33ffa060e63f11c26184b3c6ee387db1bca32312ef49b1c69dfb1d663a03b6e92df0baff86048c0f61cbfe80ffff34ff8405f5e10080ffff3cffa05c32eabf1eb0f4a6c3eb3e059f5c40877c95ec65fa018afed02ca88128ffc6fc80ffff3dffa0960d6eef2fe3565dee96fd4fb912133c0ce5428cb6dc2578a9f9c5fea6027ff08080ff8080"
                    },
                    {
                        "coin": {
                            "amount": 1,
                            "parent_coin_info": "0x1b4136963ef41ece657772ef70ca9d23b03c42a16ecb8f57748d7fdc90e0987b",
                            "puzzle_hash": "0xaff7139c2d31a2e4244d745baad309c857edf7dc4190e0619f475a80d1099906"
                        },
                        "puzzle_reveal": 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                        "solution": "0xffffa0ddb4dcaa641f2c10b7373a2bbf8571b4f761aea557f27e816a913a0b1fb5d1ecffa0c6fd05ffe8312a09f90fd3ac3f45442d3adc24a3ffb5fd6934939a13565c52b1ff0180ff01ffff01ffff80ffff01ffff33ffa0c6fd05ffe8312a09f90fd3ac3f45442d3adc24a3ffb5fd6934939a13565c52b1ff01ffffa0070216d3ac8d37d1fc72e4259c7a96103e4de49935c9a8b7ab7ebe78513fae028080ffff3dffa0960d6eef2fe3565dee96fd4fb912133c0ce5428cb6dc2578a9f9c5fea6027ff080ffff3effa0e707101647c483550aafb4221862a068a89b001ed2d9ff8c4b4b7d747deda7d78080ff80808080"
                    }
                ]
            },
            "to_address": "txch1prde27n2k5338dz2qqn8dq5z4cc50kcr6efxhx8rnd9ev2savzyq0ew26n",
            "to_puzzle_hash": "0x08db957a6ab52313b44a0026768282ae3147db03d6526b98e39b4b962a1d6088",
            "trade_id": null,
            "type": 1,
            "wallet_id": 4
        },
        {
            "additions": [
                {
                    "amount": 4999599999998,
                    "parent_coin_info": "0xdeb812bdc6ba2999876f9088c057867694faf4c0a3cfcb384a578d673d50347f",
                    "puzzle_hash": "0x60e63f11c26184b3c6ee387db1bca32312ef49b1c69dfb1d663a03b6e92df0ba"
                }
            ],
            "amount": 0,
            "confirmed": false,
            "confirmed_at_height": 0,
            "created_at_time": 1687537712,
            "fee_amount": 100000000,
            "memos": {},
            "name": "0xe1adf82a6480190c943f8e37fe4d7f5945dd9fbe2284bf4cb60075b5e33f210f",
            "removals": [
                {
                    "amount": 4999699999998,
                    "parent_coin_info": "0x653a6248d7c2b308a35fd8b3f529c9dc485ba76f87621a4b62143edd06dd7be0",
                    "puzzle_hash": "0xc32479a76e578a51deb053c32a2116bb9cc3b80f49d26b5aaa58d032b3770058"
                }
            ],
            "sent": 0,
            "sent_to": [],
            "spend_bundle": null,
            "to_address": "txch169ga7klgwgqlu48anudsmq806f6trn95whz7mztu9aw663ygr8nqkuaxmk",
            "to_puzzle_hash": "0xd151df5be87201fe54fd9f1b0d80efd274b1ccb475c5ed897c2f5dad448819e6",
            "trade_id": null,
            "type": 1,
            "wallet_id": 1
        }
    ]
}

这些交易在链上得到确认后，VC 不再包含任何证据。持有人可以验证这一点：

chia rpc wallet vc_get_list

结果：

{
    "proofs": {},
    "success": true,
    "vc_records": []
}

——The  End——