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 0xff594fad8aa18d9d82644fcffe1f9c05e1ae0c48a8a739336685242b1d96d6cf. Chain 2 (Bitcoin): anchored in block 953721 (2026-06-15T01:12:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a6dbfed-6b55-42cf-998a-c765ea46a5b3.json and https://artists.proofprofile.net/proofs/artist/8a6dbfed-6b55-42cf-998a-c765ea46a5b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die magischen Tierfreunde (Band 13) - Lea Lämmchen und der Freundschaftszauber [Hörbuch mit süßen Tieren für Kinder ab 7 Jahren]