Reward Addresses

Reward addresses (also called stake addresses) contain only a staking credential. They are used for staking operations and cannot hold regular UTXOs.

Structure

Reward Address = Staking Credential Only

Staking Credential: Controls delegation and reward withdrawal No Payment: Cannot receive or spend regular UTXOs

Construction

Create reward addresses by instantiating the RewardAccount class:

import { KeyHash, RewardAccount } from "@evolution-sdk/evolution";

const rewardAccount = new RewardAccount.RewardAccount({
  networkId: 1, // mainnet
  stakeCredential: new KeyHash.KeyHash({
    hash: new Uint8Array(28)
  })
});

const bech32 = RewardAccount.toBech32(rewardAccount);
console.log(bech32); // "stake1..."

Parsing Addresses

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

const bech32 = "stake1uyehkck0lajq8gr28t9uxnuvgcqrc6070x3k9r8048z8y5gh6ffgw";

const address = RewardAccount.fromBech32(bech32);

console.log("Network ID:", address.networkId);
console.log("Stake credential:", address.stakeCredential);

Script-Based Addresses

Reward addresses can use script hashes for the staking credential:

import { RewardAccount, ScriptHash } from "@evolution-sdk/evolution";

const scriptRewardAccount = new RewardAccount.RewardAccount({
  networkId: 1,
  stakeCredential: new ScriptHash.ScriptHash({
    hash: new Uint8Array(28)
  })
});

const bech32 = RewardAccount.toBech32(scriptRewardAccount);
console.log("Script-based reward address:", bech32);

Relationship with Base Addresses

Reward addresses are Bech32-encoded with the stake/stake_test prefix. They share the same stake credential as their corresponding base addresses:

Base Address:    addr1qx... (payment + stake)
                           ↓ (same stake key)
Reward Address:  stake1uy... (stake only)

Format Details

Bech32 Prefix: stake (mainnet) or stake_test (testnet) Length: 29 bytes raw / ~59 characters Bech32 Header Bits: 1110xxxx (key hash) or 1111xxxx (script hash)

Address Components

Reward addresses enable separation between payment and staking operations:

Capability	Payment Key	Stake Key
Spend UTXOs	Yes	No
Receive funds	Yes	No
Delegate stake	No	Yes
Withdraw rewards	No	Yes
Vote (governance)	No	Yes

Related

• Base Addresses - Addresses with both payment and staking credentials
• Enterprise Addresses - Payment credential only
• Staking - Using reward addresses for delegation and withdrawals