Побудуй Self-Hosted Blockchain State Service

import { bootstrap } from '@easylayer/bitcoin-crawler';

export const AddressUtxoWatcherModel = {
  modelId: 'wallet-utxo-watcher',
  state: { wallets: new Set(['1A1zP1...Na']), utxos: new Map() },
  sources: {
    async vout(ctx) { return { a: ctx.vout.scriptPubKey.addresses?.[0], k: ctx.tx.txid + ':' + ctx.vout.n, v: ctx.vout.value }; },
    async vin(ctx) { return { k: ctx.vin.txid + ':' + ctx.vin.vout }; },
    async block(ctx) { ctx.applyEvent('Deposit', ctx.block.height, { o: ctx.locals.vout, i: ctx.locals.vin }); },
  },
  reducers: {
    Deposit(s, e) {
      for (const x of e.payload.o || []) (s.utxos.get(x.a) || s.utxos.set(x.a, new Map()).get(x.a)).set(x.k, x.v);
      for (const y of e.payload.i || []) for (const [a, bag] of s.utxos) if (bag.delete(y.k) && !bag.size) s.utxos.delete(a);
    },
  },
};