@covenance/dlc/src/cet/types.ts

Crypto and Bitcoin functions for Covenance DLC implementation

import { Address, Script, Transaction } from '../btc';
import { Point } from '../crypto/secp256k1';
import { EventOutcomeHash } from '../crypto/types';

export type UTXO = {
  txId: string;
  outputIndex: number;
  satoshis: number;
  script: Script;
  address?: Address;
}

export type DlcInitTx = {
  tx: Transaction;
  dlcUtxo: UTXO;
  witnessScript: Script;
  cBlock: string;
  tPubKey: string;
}

export type P2trOutputScript = {
  scriptPubKey: Script;
  tPubKey: string;
  cBlock: string;
}

export interface OracleEvent {
  id: string;
  outcomeSignaturePoints: Point[];
  outcomePrices: number[];
  outcomeHashes: EventOutcomeHash[];
  timestamp: number;
  nonce?: bigint;
}

export interface OracleCET {
  cetTx: Transaction;
  eventId: string;
  outcomeSignaturePoint: Point;
  outcomeLiquidationPrice: number;
  lenderAmount: number;
  borrowerAmount: number;
}

export interface LoanConfig {
  collateralAmount: number; // C
  annualInterestRate: number; // r
  liquidationThreshold: number; // LT
  borrowedAmount: number; // D_0
  penaltyPercentage: number; // pen
}