Stumpy may refer to: As a nickname or stage name: Stumpy Bartlett (1899–1965), American college football player Stumpy Cromer (1922–2013), American comedian and dancer, of the Stump and Stumpy ente
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d9fd022818918a66e7dcf937886feeeb84d714da195560661c082e078a46fb. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1719b577-6778-4474-9838-cb8c00832769.json and https://artists.proofprofile.net/proofs/artist/1719b577-6778-4474-9838-cb8c00832769.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).