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 0xc82033d760205ece199e651b7bd117c923049035233ff49cb2b20847e5ee413f. 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/2c47635d-0bc1-4bc0-9ab6-444186e5e310.json and https://artists.proofprofile.net/proofs/artist/2c47635d-0bc1-4bc0-9ab6-444186e5e310.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die letzten Meter bis zum Friedhof (Ungekürzt)
Der Kaninchen-Faktor [Henri Koskinen, Band 1 (ungekürzt)]
Kapitel 1 - Der Kaninchen-Faktor - Henri Koskinen, Band 1
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecff69575f1d07fff99d5d66807f5e1430de5decba32c632e4fa77e526da81d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1A42153042.
Das Elch-Paradoxon [Henri Koskinen, Band 2 (ungekürzt)]
Die Biber-Methode [Henri Koskinen, Band 3 (ungekürzt)]