RetryCredit

The retry pays for the failure.

RetryCredit is a pre-funded execution service credit for signed DeFi routes. A wallet user authorizes the recipient, the sponsored service runs an included stale Uniswap route and a refreshed retry for the same funded action, and one native Attestcoin batch proves both Ethereum receipts before Creditcoin releases the fixed credit exactly once.

• Use the public testnet app
• Inspect the active deployment and public receipts
• Run or integrate the proof and execution API
• Read the active pool, verifier, and predicate

The current public pilot is deliberately narrow:

• Ethereum Sepolia source chain and Creditcoin Testnet settlement.
• Official Uniswap Universal Router 2.1.1.
• One WETH → Circle test-USDC fee-500 route.
• One bounded sponsor-funded credit per visitor wallet.
• A relayed testnet route: the visitor signs only to name the wallet that receives both test-USDC output and the Creditcoin credit.
• Test assets only; no mainnet value, insurance, or exact gas reimbursement.

Why Attestcoin is load-bearing

The Creditcoin release requires one native Attestcoin batch containing both ordered source receipts. The verifier enforces:

1. The same service executor, visitor beneficiary, funded action, official router, input amount, and signed intent.
2. A status-0 receipt followed by a status-1 receipt in a bounded source window.
3. A newer route nonce, quote marker, deadline, and improved minimum output.
4. One exact Uniswap pool Swap and one exact Circle test-USDC transfer to the trader.
5. One-time query, pair, action, and service-credit consumption.

Remove Attestcoin and the Creditcoin pool cannot authorize the release. The proof builder is not trusted for integrity: every candidate batch is checked locally and then simulated against the exact funded pool before the relayer may submit it.

Public evidence

A fresh lifecycle completed through the deployed public HTTPS service on August 22, 2026:

• Included status-0 route: 0x9cb8…ee07
• Next-block settled retry: 0x81e9…f9b0
• Creditcoin release: 0xb787…7cdf
• Source-to-credit time: 552 seconds.
• Public replay returned the same release and produced no second CreditReleased event.

The execution used test assets and a founder-funded service credit. It proves public causability and public-chain execution, not independent adoption or customer demand.

Contracts

• RetryCreditUniversalRouterPoolV2: pre-funded drafts, a distinct visitor beneficiary, committed source transactions, fixed release, refunds, and replay consumption.
• AttestcoinRetryCreditUniversalRouterVerifierV2: native batch verification and source identity derivation.
• RetryCreditUniversalRouterPredicateV2: canonical signed-router decoding, beneficiary-bound retry correlation, receipt ordering, and exact settlement evidence.
• EvmV1Decoder: strict Attestcoin EVM receipt decoding.

The previous RuleDrop contracts remain in the repository as an archived proof-engine predecessor. They are not the current product or public release claim.

Public service

The reviewed V3 pilot authenticates one short-lived wallet challenge, pre-funds the Creditcoin service credit, signs two official Universal Router routes from a separate service role, and commits the exact raw signed source transactions on Creditcoin before either is broadcast. It then executes the bounded Sepolia retry with the visitor as the test-USDC recipient, waits for Attestcoin finality, simulates the exact release, and submits through a distinct relayer role. The visitor wallet never deposits an asset or approves a token; the same address receives the settled test-USDC and the Creditcoin credit. Durable authorization, source commitments, and replay state remain onchain. V3 is the public release marker; the deployed contract class names retain their V2 suffixes.

The V3 pilot is enabled at pool 0x81b5d955F4EbfaE02FF6346cf368A2c4347248A1 after two fresh end-to-end releases with distinct beneficiaries and a service restart. Public sponsorship remains founder-funded, testnet-only, capped per deployment, and fails closed when the service wallet or reserve is unavailable.

Local verification

npm ci
npm test
npm run build
npm run build:web:cloudflare

The repository covers the V1 evidence path and the V2 relayed path, including malformed proofs, route mutations, source identity drift, replay, unauthenticated infrastructure, distinct beneficiary binding, restart-safe source commitments, and sponsor/relayer separation.

For a local browser journey, copy .env.example to .env, populate only testnet values, run node --env-file=.env src/server.mjs, and start npm run app:dev in a second terminal. See the API guide for route semantics, retry behavior, environment names, and the onchain trust boundary.

Truth boundary

Attestcoin proves an authorized included failure and a later exact settlement. It does not prove the human-readable revert reason, organic user loss, exact gas expenditure, or an insurance event. The first route in this pilot is a disclosed controlled stale-route test.