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 0xcd8f91ba1027237d61ae2c1b927a07bd5c8b80b6c1f1aba6b4a011507bc11eaa. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db984d4a-3773-4fbc-afa5-e6d5c3e45d4b.json and https://artists.proofprofile.net/proofs/artist/db984d4a-3773-4fbc-afa5-e6d5c3e45d4b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x391c432c37d9676614255fcd95784fc92108fb3b66b4e180aa3a8bcbc8735f17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAWHO2033314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4735eb8c6262a83d61bce49883145a7830091cdea460da26f68a5cd12e814c. 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/USLZJ1565631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268e56dcc5dcdff7e27d8ffc01fb19dc2e5834f0eef77ac0139bcba4641a9287. 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/CA5KR0005589.
Falevél (Matthew Beren X Delighters 2021 Remix)
Run Away (Roberto Rios X Dan Sparks Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82153afcc6c6a40700c937ca8037ec7aca1db2fe9bbfa1c676c58ceb9c1df20. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HUA791800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190f1f8607378b52f93ec6597b4ef20cee359275a8858fc22c3d9560bb839221. 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/HUA791800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8494f71a11d266d705c0f2093131c9765c2392a5270f66b1cf5e8178f590918b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HUA791800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdecad430d691a48c7fc004faabc6b850dfa1e54770b3ce6b4625ad3aee45fcb. 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/HUB501700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0c54837582c20855e5fd159c02a2126d10ee396e1d626536c6c53a71dae19c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR1536463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b7cb5860c2682629c0e8b3db35a3269765042ebb7a8732f35e18a8ed05bad1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUB501700002.