thumb|upright|Ernst Anschütz Ernst Gebhard Salomon Anschütz (28 October 1780 in Goldlauter near Suhl, Electorate of Saxony – 18 December 1861 (other sources: 11 December 1861"Ernst Anschütz" by , (Sa
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 0xbb26b5d4dbc24c53a3f9b9fe93c8b2f4c090f206ccb08810e35b8b084e1a2ba6. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1617c741-6be7-494e-8fbf-0a7ddf3d2976.json and https://artists.proofprofile.net/proofs/artist/1617c741-6be7-494e-8fbf-0a7ddf3d2976.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Christmas Tree (Arr. For Cello by Stéphane Gassot)
O Christmas Tree (Arr. for Guitar by Gerard Cousins)
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 0xc1a2258d68500bfe97bc14c2eb1459ec7c6d204e8161b0147eaf057eba79260a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEC171700239.
Best of: Living the Dream (Tarja's Non-Rock Specials)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14827ae0eeafeb6f65bc9f9d8c4237eeb12f7c2238fc04b93ad9eeb7dafbc626. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEH841700765.
Die schönsten Kinderlieder und Volkslieder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22877cbbbd44f6fd01ccf5e1029549a726e2b738d9992e8325bbd1e113ff0f22. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEF076207210.