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 0xbd3dffd89f8b1b5db1b1fb1d231b6dc5e3e037f601db61a477d62fdfa530bfdf. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc60202d-5f07-4901-b96d-026cdc85373d.json and https://artists.proofprofile.net/proofs/artist/fc60202d-5f07-4901-b96d-026cdc85373d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Uri, das Burggespenst (Pixi Einschlafgeschichten 66)
Der heimliche Ausritt (Pixi Einschlafgeschichten 9)
Julia und Anton im Theater (Pixi Einschlafgeschichten 41)
Kapitän Sternhagel - Fußball am Strand (Pixi Einschlafgeschichten 42)
Räuberweihnacht (Pixi Einschlafgeschichten 60)
Trinchen fragt den Osterhasen (Pixi Einschlafgeschichten 64)
Papas Fußball (Pixi Einschlafgeschichten 53)
Willi baut (Pixi Einschlafgeschichten 70)
Klaus baut ein Haus (Pixi Einschlafgeschichten 49)
Hubert Maus wird Nikolaus (Pixi Einschlafgeschichten 39)
Das kitzelige Pony (Pixi Einschlafgeschichten 6)
Pauls Kuschelkissen (Pixi Einschlafgeschichten 54)