fetchStakerRewardsPerTokenSettled

Reads the rewards-per-token value at which a staker's position within a signer-manager's share of one tranche was last settled. Wraps the pox-5 read-only get-staker-rewards-per-token-settled-for-cycle, which reads the staker-rewards-per-token-settled-for-cycle map.

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Usage

import { fetchStakerRewardsPerTokenSettled, fetchPoxInfo, fetchSignerCycleMembership } from '@stacks/bitcoin-staking';

async function read(staker: string) {
  const { rewardCycleId: rewardCycle } = await fetchPoxInfo({ network: 'mainnet' });
  const membership = await fetchSignerCycleMembership({ staker, rewardCycle, network: 'mainnet' });
  if (!membership) return 0n;

  // STX-only staking tranche. Add bondIndex to read a protocol bond.
  return fetchStakerRewardsPerTokenSettled({
    signerManager: membership.signer,
    rewardCycle,
    staker,
    network: 'mainnet',
  });
}

Notes

• settle-staker-rewards sets it to the signer-manager's fetchSignerRewardsPerTokenForCycle value (settle-staker-rewards). When a staker joins a cycle through STX-only staking, pox-5 sets it to that same value, so rewards recorded before the staker joined are excluded (add-staker-to-signer-for-cycle).
• The value is scaled by 10^18 (PRECISION): sats of sBTC per share, times 10^18. A share is one sat in the protocol bond tranche and one micro-STX in the STX-only staking tranche.
• Returns 0n when the contract has no entry for the inputs.
• A non-2xx response throws an Error whose message starts with Error calling read-only function. and includes the status code and URL. If the node reports that the call failed, the Error message is the node's cause.

Reference Link

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Signature

function fetchStakerRewardsPerTokenSettled(
  opts: {
    signerManager: string;
    rewardCycle: number;
    bondIndex?: number;
    staker: string;
  } & NetworkClientParam
): Promise<bigint>;

opts is a NetworkClientParam plus signerManager, rewardCycle, bondIndex and staker.

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Returns

Promise<bigint>

Resolves to the staker's settled rewards-per-token value, scaled by 10^18.

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Parameters

opts.signerManager (required)

• Type: string

Contract principal of the signer-manager, in the form <address>.<contract-name>. pox-5 keys signer state by this principal.

opts.rewardCycle (required)

• Type: number

Reward cycle to read.

opts.bondIndex (optional)

• Type: number

Protocol bond index. Set it to read that bond in the protocol bond tranche. Omit it to read the STX-only staking tranche.

opts.staker (required)

• Type: string

Stacks address of the staker.

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.