Old Blood is an album by Mayday, released May 14, 2002. The album was recorded in May and November 2001 at Presto! Recording Studios in Lincoln, Nebraska. Mayday features the vocals and compositions o
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 0xe2f3d99c749a4f1b1f43640dd39f58e41b976d7af99d42ee6dc4e5c5d1cbc38d. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b9bcf12-706b-4943-8403-19808039be79.json and https://artists.proofprofile.net/proofs/artist/1b9bcf12-706b-4943-8403-19808039be79.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.