One original economic owner · Read-only machine JSON · Buyer-controlled x402

X Layer TapeOut CPU0: what changed between two pinned blocks?

The existing 0.005 USDC snapshot API reads one pinned block. This is a different service: a deterministic comparison of 20 public TapeOut CPU0 fields across an October 23 historical baseline and a recent pinned X Layer block, chain 196. It covers relevant factory fees, markets, token supply, proxy implementation, owners and admin fields. It reports before, after and change status without pretending to cover every intervening block or every other contract.

Live paid GET · x402 version 2 · exact native Circle USDC on Base

0.010000 USDC per authorized paid JSON response

Both block reads must succeed before the API asks a client to pay. If needed data is incomplete, unavailable or stale, the service returns an error before charging. This is not an audit, oracle, real-time change-alert subscription, portfolio report or recommendation to buy any token.

Official PayAPI listing and verified one-time paid check ↗ Free fictional diff example ↗

Free inspection and exactly what gets charged

The free example is a GET returning HTTP 200 JSON with paid:false, exampleOnly:true, chainIdForData:196, chainIdForPayment:8453, baselineBlock:73915245 and fieldsCompared:20. Its example price and any before/after numbers are illustrative, not investment data. A free browser explorer is available if it meets your needs; no reason to pay if it does.

curl -i 'https://vm5-openapi-x402.onrender.com/v1/tapeout-cpu0-diff'
# Unpaid GET -> HTTP 402 Payment Required
# x402Version = 2; scheme = exact
# network = eip155:8453 (Base mainnet, not data-source chain 196)
# amount = 10000 atomic units = 0.010000 native Circle USDC
# asset = 0x833589fCD6eDb6E08f4C7C32D4f71b54bdA02913
# payTo = 0x4e3106520E40af30870caFE78da1B1e7110eD98E

Merchant payee: 0x4e3106520E40af30870caFE78da1B1e7110eD98E. This original VM1 MetaMask address belongs to the same beneficial owner as the separate VM hosting the public data API. The URL you view here cannot sign any transaction.
Data chain versus settlement chain: Read public state from X Layer 196; pay for the JSON convenience over Base eip155:8453. This is not a cross-chain transfer or a bridging service.
Settlement token: Native Circle USDC on Base, contract 0x833589fCD6eDb6E08f4C7C32D4f71b54bdA02913, 6 decimals. Review the signed authorization in a buyer-controlled approved x402 client before paying.
Method and API shape: GET https://vm5-openapi-x402.onrender.com/v1/tapeout-cpu0-diff; no body, wallet login, remote execution, private key, token allowance or API key required from browsing this documentation.

Verified third-party platform test

PayAPI Market's operator reports one real 0.010000 native Base USDC paid test of this exact historical-diff product, marked payment_verified: true at 2026-10-24 07:56:31 UTC. The public record names transaction 0x7725c3545291b731b2075cadd1622f77ffe3342496bfba474055a4e97d1a8a7e. The one original MetaMask public balance increased by 0.010000 USDC during that time window.

Limits: this was one marketplace operator validation purchase. It is not evidence of independent repeat customers, lasting customer demand, independently certified content accuracy or any net profit. The transaction attribution is grounded in the marketplace's verified record and matching public balance change; this page does not claim to have independently decoded the ERC20 event in a transaction receipt.

Engineer checklist

Confirm the endpoint returns a 402 containing the correct price, network, asset and payee. Compare the free mock structure against your expected 20-field diff. After an explicitly authorized purchase, check the two block numbers, the 20 source-specific before/after values, public explorer contracts and evidence timestamps. Snapshot differences cannot prove an event happened only once between those blocks. Historical states can differ because of real contract changes, proxy upgrades or assumptions in the API's field list. Treat any missing or failed upstream read as missing data, not as a zero difference.

X Layer의 서로 다른 두 블록에서 공개된 CPU0 필드 20개를 비교하는 읽기 전용 API입니다. 1회 호출은 Base USDC 0.01이며 무료 예시는 실제 블록 변화가 아닌 가상값입니다. 운영사 결제 검증 1건만 확인되었고 반복 매출이나 투자 수익을 보장하지 않습니다.

No user funds or signatures are requested by this documentation page. This is public technical information, not trading advice, an escrow, a security audit, or a guaranteed revenue source.