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 0x48f903ebfb2f21fe4c3d2085bda2d685826309591b05528651d59b6e0adbc4a3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/635f70c5-cfcf-4f5f-9048-d1709b2d4761.json and https://artists.proofprofile.net/proofs/artist/635f70c5-cfcf-4f5f-9048-d1709b2d4761.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Irgendwo auf der Welt - From Ein blonder Traum
Quintett des Deutschen Kammerorchesters Berlin
Escape To Paradise - The Hollywood Album
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 0x738897d6954c4d0b30e5d01084ea55e4e2b8d5ad8f30e0f22d2e374600d9fa60. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEN961304370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb903b5c6dcc75de156dd073473a9ca000ec903052a9a64f9b50411c13cd5d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEN961201880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0430685f0b5ca37acc08742aa06db929e8ddec1f7751bda03cc55c6bdca29279. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEN961501310.
Spheres - Einaudi, Glass, Nyman, Pärt, Richter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb903b5c6dcc75de156dd073473a9ca000ec903052a9a64f9b50411c13cd5d9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEN961201880.