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 0x8f64af34e32acd8be7940f6966a18cd296a83202c1d31e2740935ecee66392a6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6727970e-881d-419a-88f5-c660432734c2.json and https://artists.proofprofile.net/proofs/artist/6727970e-881d-419a-88f5-c660432734c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Staffel 2: Die neuen Abenteuer von Bobo (Das Hörspiel zur Kinder TV- Serie)
Bobo Siebenschläfer hat Geburtstag! (Geschichten für Kleine mit KlangErlebnissen und Liedern)