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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3510a5ecff6c6ec9c0c8d2f552847dea4c328cb17e20850965b563f3c732e969. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69b3bb7f-eaaa-4689-ac0e-d904a290892d.json and https://artists.proofprofile.net/proofs/artist/69b3bb7f-eaaa-4689-ac0e-d904a290892d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449705b83323744dd9ee2d23f883f842bb0f9c1d59720417db7263a7df8c7a49. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/DEPI82434547.
NO SIENTO MI SANGRE - JOSE BONETTO REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776d7100f238ca3a28a05c1096f151aa0ccf763de4fc2e483ba60354894d0a20. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/ARR6V2400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42fe244f4eb91b59d8646194e2126a832a892f999b05cf5b39a9d89204f84de. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ARR6V2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58ef84b5c2898122518a898205c7ea4d0ef552674a20e295780909b9c827c96. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ARR6V2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192d172f3b83d57c14e07c963bad308a420c7bb3583ef7d8755c41b6222108da. 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/ARR6V2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b72c35d0ef68841509ad2cf7c9855738f93ba9d49ebeed1d3c3006ecfed1b39. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ARR6V2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2361fb627292f76525a7d28f411ea295dd28b60db4305dc4ba100f93c3c581c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARR6V2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb5bf65f4b8f36f1e81f99540f128880db0f291cbab13da19154e0e3039e1e0. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ARR6V2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64ab171a3be6733ce97be38f69067b48c666e566902613a2d5c5cf8cf9ff933. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ARR6V2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fc2bbf549c2f04a44ed52eb3484f4dd802425ecb614da08770405b002f106e. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ARR6V2400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe21a65481f7b4a47e514bd200f0d76211ad9b5ec327b238c2c0f8f27ef06bf4. 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/ARR6V2400382.
NO SIENTO MI SANGRE (JOSE BONETTO REMIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776d7100f238ca3a28a05c1096f151aa0ccf763de4fc2e483ba60354894d0a20. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ARR6V2400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04aa7e9ef1cdfc71b5ed0e41fbc880b3a58828d295f54c05c1ab36aba2fcee8b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ARR6V2400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634dced1a8c11721eb0681e358e8e78229ef5cdcb3bc5eff86acf1c3791b9fe4. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ARR6V2400274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b72c35d0ef68841509ad2cf7c9855738f93ba9d49ebeed1d3c3006ecfed1b39. 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/ARR6V2400015.