fetchReverseBuff32

Calls the pox-5 reverse-buff32 read-only and returns a 32-byte buffer with its byte order reversed. pox-5 uses it to convert hashes between Bitcoin's internal byte order and display order.

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Usage

import { bytesToHex } from '@stacks/common';
import { fetchReverseBuff32 } from '@stacks/bitcoin-staking';

const reversed = await fetchReverseBuff32({
  input: '00112233445566778899aabbccddeeff0102030405060708090a0b0c0d0e0f10',
  network: 'mainnet',
});

bytesToHex(reversed); // '100f0e0d0c0b0a090807060504030201ffeeddccbbaa99887766554433221100'

Notes

• Wraps reverse-buff32.

• The input must be exactly 32 bytes. A shorter input makes the contract panic, and a longer one fails the (buff 32) argument type. The call throws in both cases.

• Throws an Error if the node returns a non-2xx status (the message starts with Error calling read-only function.) or answers okay: false (the message is the node's cause).

Reference Link

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Signature

function fetchReverseBuff32(
  opts: { input: Uint8Array | string } & NetworkClientParam
): Promise<Uint8Array>;

opts is a NetworkClientParam plus input.

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Returns

Promise<Uint8Array>

The 32 input bytes in reverse order.

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Parameters

opts.input (required)

• Type: Uint8Array | string

The 32 bytes to reverse, as raw bytes or hex.

opts.network (optional)

• Type: StacksNetworkName | StacksNetwork

The network to query: a name such as 'mainnet' or 'testnet', or a StacksNetwork object. Defaults to 'mainnet'.

opts.client (optional)

• Type: { baseUrl?: string; fetch?: FetchFn }

Overrides the API base URL or the fetch function, for example to query your own node. Fields you set replace the network's defaults.