41 may refer to: 41 (number), the natural number following 40 and preceding 42 One of the years: 41 BC AD 41 1941 2041 Arts and entertainment 41 (film), a 2007 documentary on Nicholas O'Nei
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86017835be7f2141534507c96a4440dad3b120a717b532ca7acecb8ba386f307. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e71d5b12-0ce9-4ee1-9b27-f3f232fbe390.json and https://artists.proofprofile.net/proofs/artist/e71d5b12-0ce9-4ee1-9b27-f3f232fbe390.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).