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Integrate multiasset notes, local proofs and mainnet transactions.

lib/v3 · TypeScript

Encrypted notes.
Local proofs.

Create accounts, recover notes from the shared pool and submit through an EVM wallet.

import { parseUnits } from 'viem';
import { makeNote, parsePrivacyAddress, prepareTransition,
  selectNotes } from './lib/v3/crypto';
import { sync, submitTransaction } from './lib/v3/chain';
import { generateProof } from './lib/v3/prover';

const state = await sync(rpc, manifest, account);
const amount = parseUnits('1.25', 18);
const fee = state.state.fee;
const inputs = selectNotes(state.notes, amount + fee);
const change = inputs.reduce((s, n) => s + n.note.amount, 0n)
  - amount - fee;
const outputs = [makeNote(amount, parsePrivacyAddress(recipient))];
if (change) outputs.push(makeNote(change, account.publicKey));

const prepared = prepareTransition({
  context: state.context, tree: state.tree,
  operation: 1, sender: account, inputs, outputs,
  protocolFee: fee, protocolRecipient: state.state.treasury,
  deadline: (await rpc.getBlock()).timestamp + 900n
});
// Display amount, fee, self-relay gas and expiry; obtain approval.
const proof = await generateProof(prepared, manifest);
const hash = await submitTransaction(
  rpc, ethereum, manifest, evmAddress, prepared, proof
);