Hex Encoding

Hexadecimal strings are used throughout Cardano for hashes, policy IDs, transaction IDs, and raw byte data. The Bytes module provides conversion between hex strings and byte arrays.

Hex to Bytes

import {  } from "@evolution-sdk/evolution"

// Convert hex string to Uint8Array
const  = .(
  "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2"
)
// Uint8Array(32) [161, 178, 195, ...]

const  = .(
  "abc123def456abc123def456abc123def456abc123def456abc123de"
)
// Uint8Array(28) [171, 193, 35, ...]

Bytes to Hex

import {  } from "@evolution-sdk/evolution"

const  = new ([0xab, 0xcd, 0xef])
const  = .()
// "abcdef"

Text to Bytes

For human-readable strings (asset names, metadata values), use Text.toBytes:

import {  } from "@evolution-sdk/evolution"

const  = .("MyToken")
// Uint8Array representing UTF-8 encoded "MyToken"

When to use which:

Bytes.fromHex — For hashes, policy IDs, credential hashes (data already in hex)
Text.toBytes — For asset names, metadata values (human-readable strings)

Next Steps

Bech32 — Address encoding
PlutusData — On-chain data structures

Hex

Hex Encoding

Hex to Bytes

Bytes to Hex

Text to Bytes

Next Steps

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