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 0xf5e7fb6eaa4f30643097a90f23b2fd91ab5c73f050156a7f49602260d9a99cf3. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ec0adff-83f7-4949-81bd-27b07a67897f.json and https://artists.proofprofile.net/proofs/artist/9ec0adff-83f7-4949-81bd-27b07a67897f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Glöckchen, das Weihnachtspony (Band 1) - Das Wunder vom Nordpol [Ein stimmungsvolles und humorvolles Weihnachts-Abenteuer für Kinder]
Glöckchen, das Weihnachtspony (Band 2) - Der Zauber des Nordsterns [Ein stimmungsvolles und humorvolles Weihnachts-Abenteuer für Kinder]
Glöckchen, das Weihnachtspony (Band 3) - Die Magie des Nordlichts [Ein stimmungsvolles und humorvolles Weihnachts-Abenteuer für Kinder]
Glöckchen, das Weihnachtspony - Ein magisches Winterwunder