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 0xde9695de97430b30eccc75bdd689f8c147991eed7ce6a3450b43d99fac7b6467. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db7e7166-bcff-450c-a969-83eee8e36639.json and https://artists.proofprofile.net/proofs/artist/db7e7166-bcff-450c-a969-83eee8e36639.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Taste of Apple Seeds (OT: Der Geschmack von Apfelkernen) [Original Motion Picture Soundtrack]
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 0x0c7f6129d6963230ee3b212572870c96ac5264ee766a68771267ee8e6efbfd8c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USQ4E1602067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a2606b752caa787600c94616836bb1f56e00b81efae531d041864994065ea1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USQ4E1602069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f1677158522d437886639624a2ffa78cc65178e2cd56a19533b1a3888add7d. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:00:12Z), 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/USQ4E1602071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627ef4122b8e0355cf51754586e8446eb10d983c7dc96e77508d9a49ba18a2d2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:54:02Z), 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/USQ4E1602075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b8da3af0a1f6846772a6377e8aa861bec51d836cfe4c79ca86af449e4d4d0f. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:58:38Z), 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/USQ4E1602081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c714b3ba6e71d9ebd0ade8dae8924526d7ad80bb99403797d7326840219c89. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USQ4E1602087.
The Diary of Anne Frank (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a2606b752caa787600c94616836bb1f56e00b81efae531d041864994065ea1. 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/USQ4E1602069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c714b3ba6e71d9ebd0ade8dae8924526d7ad80bb99403797d7326840219c89. 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/USQ4E1602087.
Das Geheimnis der Hebamme (Original Soundtrack)