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 0x690f9273d67db529ecab5f7b5af8dcab429859304845974f90a98e5962aae03c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/602392a2-c38c-4dd9-9cbc-4e8457d514a5.json and https://artists.proofprofile.net/proofs/artist/602392a2-c38c-4dd9-9cbc-4e8457d514a5.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
In the Dog House [An Appletree Cove Romance, Book 1 (Unabridged)]
Just One Kiss - An Appletree Cove Romance, Book 2 (Unabridged)
Mörderische Verstrickungen [Cashmere, Tartan und ein Mord, Band 1, Ein schottischer Cosy Crime (Ungekürzt)]
Mord im Grünen [Cashmere, Tartan und ein Mord, Band 2, Ein schottischer Cosy Crime (Ungekürzt)]
Teil 1 - Mord im Grünen - Cashmere, Tartan und ein Mord, Band 2
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 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 0xc5c7fbbb4ab7eceed4feddc63d3b7bcef550f01765b0c40123aaad9871a8e1e9. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXN92288908 — a six-check JSON result.
Mord in schottischer Gesellschaft [Cashmere, Tartan und ein Mord, Band 3, Ein schottischer Cosy Crime (Ungekürzt)]
Eine mörderische Hochzeit - Ein schottischer Cosy Crime [Cashmere, Tartan und ein Mord, Band 4 (Ungekürzt)]