{"slug":"www-tereno-xyz-api-v1-claims-5b5f55","title":"Publish a deterministic claim about a Base proxy and let the market try to break","host":"www.tereno.xyz","method":"POST","resource":"https://www.tereno.xyz/api/v1/claims","category":"code","description":"Publish a deterministic claim about a Base proxy and let the market try to break it. You assert that a contract's implementation slot held one address across a block range, fund a reward for whoever finds a block where it did not, and Tereno writes the claim onchain and adjudicates counterexamples b","price_listed":0.25,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":2,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"POST","queryParams":{"address":"0x1111111111111111111111111111111111111111","claimType":"contract.upgrade.window.claim","deadlineHours":72,"fromBlock":20000000,"rewardUsd":5,"toBlock":20500000,"wallet":"0x2222222222222222222222222222222222222222"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["POST"],"type":"string"},"queryParams":{"additionalProperties":false,"properties":{"address":{"description":"Base proxy contract the assertion is about.","pattern":"^0x[a-fA-F0-9]{40}$","type":"string"},"claimType":{"const":"contract.upgrade.window.claim","description":"The only claim type whose survival is worth a receipt."},"deadlineHours":{"description":"How long the claim stays open to challenge, 1 to 720.","type":"integer"},"fromBlock":{"description":"Inclusive start of the window. The window must span 1000 to 2000000 blocks.","type":"integer"},"implementation":{"description":"Optional. Defaults to whatever the implementation slot resolves to at toBlock.","type":["string","null"]},"rewardUsd":{"description":"What you will pay the first wallet that falsifies your claim. Not escrowed by Tereno.","type":"number"},"toBlock":{"description":"Inclusive end of the window. Must not be in the future.","type":"integer"},"wallet":{"description":"The opener wallet, which must sign the request.","pattern":"^0x[a-fA-F0-9]{40}$","type":"string"}},"required":["address","fromBlock","toBlock","rewardUsd","deadlineHours","wallet"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"breadcrumbStatus":{"type":"string"},"claim":{"type":"object"},"pricing":{"type":"object"},"receiptUrl":{"type":"string"}},"required":["claim","breadcrumbStatus","receiptUrl","pricing"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Publish a deterministic claim about a Base proxy and let the market try to break it. You assert that a contract's implementation slot held one address across a block range, fund a reward for whoever finds a block where it did not, and Tereno writes the claim onchain and adjudicates counterexamples by historical storage reads. If nobody collects before your deadline, you get a reproducible survival receipt: not an audit, but proof the claim stood in public with money on it.","last_updated":"2026-09-13T14:34:20.31Z","schemes":["exact"]}