@dedot/默克勒兹-元数据

合并元数据公用事业 -- -- 执行 RFC-0078 合并元数据 规格.

概览

这套服务为:

• 计算元数据散列/ digest
• 生成外部有效载荷或外部零部件的证明

使用量

计算元数据 hash/Digest

import { DedotClient, WsProvider } from 'dedot';
import { MerkleizedMetadata } from 'dedot/merkleized-metadata';

// Create a dedot client
const client = await DedotClient.new(new WsProvider('wss://rpc.polkadot.io'));

// Get metadata from the client
const metadata = client.metadata;

// Define chain-specific information
const chainInfo = {
  // These can be omitted as they'll be fetched from metadata
  // specVersion: client.runtimeVersion.specVersion,
  // specName: client.runtimeVersion.specName,
  // ss58Prefix: 0, // Polkadot

  // These are required
  decimals: 10,
  tokenSymbol: 'DOT'
};

// Create a merkleizer instance
const merkleizer = new MerkleizedMetadata(metadata, chainInfo);

// Calculate metadata hash
const hash = merkleizer.digest();
console.log('Metadata Hash:', hash);

生成extrinsics 的证明

import { MerkleizedMetadata } from 'dedot/merkleized-metadata';

// Create a merkleizer instance
const merkleizer = new MerkleizedMetadata(metadata, chainInfo);

// Generate proof for an extrinsic
const extrinsicHex = '0x...'; // Hex-encoded extrinsic
const proof = merkleizer.proofForExtrinsic(extrinsicHex);

// Generate proof for extrinsic payload
const txPayload = '0x...'; // Hex-encoded extrinsic payload
const proof3 = merkleizer.proofForExtrinsicPayload(txPayload);

// Generate proof for extrinsic parts
const callData = '0x...'; // Hex-encoded call data
const includedInExtrinsic = '0x...'; // Hex-encoded extrinsic extra
const includedInSignedData = '0x...'; // Hex-encoded signed extra
const proof2 = merkleizer.proofForExtrinsicParts(callData, includedInExtrinsic, includedInSignedData);

MerkleizedMetadata

计算元数据散列和生成证明的主类.

• 构造器数字 : new MerkleizedMetadata(metadata, chainInfo)

  • metadata: 元数据对象、十六进制字符串, 或 Uint8Array
  • chainInfo: 链条特定信息(有些字段会从元数据中获取,因此可以省略)

• 方法数字 :

  • digest(): 计算元数据散列并返回为 Uint8Array
  • proofForExtrinsic(extrinsic, additionalSigned?): 生成外部证据
  • proofForExtrinsicPayload(txPayload): 生成外部有效载荷的证明
  • proofForExtrinsicParts(callData, includedInExtrinsic, includedInSignedData): 生成外部部件的证明

许可证

阿帕奇 - 2.0