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 0xd6d470aa8702e90a1f737f10841d874cc47b292653278c024b5bf057104488f2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02d2521e-5ee6-4cb2-a32e-ad8925ccf7ce.json and https://artists.proofprofile.net/proofs/artist/02d2521e-5ee6-4cb2-a32e-ad8925ccf7ce.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 0xb64e865799d10def3f085e694dd7c8b3567a77592e61b6f52d4187a9474e6238. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/US4M30801203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248bb70207394b5feb47b4330c8e68b0bf801ed29ccb1c50e7526244fc1d222c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FR99S1000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c7ccfe9a9e248c8eecde1bb84556add9ee341a45af114a24c05d9f5315357b. 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/FR99S1000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4d31af4a908ebdfe25d4ec07dcdb98b206818055502277b6555fe5106db688. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR99S1000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6038539385b369889d03b72b87394cd3a2bd7f2bced8e6700d063e15bbb9103e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/US66W1800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6038539385b369889d03b72b87394cd3a2bd7f2bced8e6700d063e15bbb9103e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US66W1800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a08523c521442f79f47f6863a65f223516802b615f3bd099de202e97cd007f9. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/US66W1800047.
The Tropical Club Night (Compiled by DJ Ralph von Richthoven)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8ae366623b9ef13ae81ef1b409a3da39bd781045eb9c97b6fed01c52f2a93e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HUA361000030.
Una Música Brutal - El Hijo de la Cumbia Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe0f7d1a633ac43ba738149ee75a69e3eaf196d343d041f4ac1b3e8d278f70f. 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/FR99S1100002.