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 0x84657c02cbafb3de26b953db2cd2836362f9b3b17a9edad1bfea81a8a92c57cd. 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/5ad43386-bf2c-42e6-9329-6a199765d7c7.json and https://artists.proofprofile.net/proofs/artist/5ad43386-bf2c-42e6-9329-6a199765d7c7.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 0x7a6c58b03ba0c3fd5bf542319cc65e6f86fbddbaa409cebbcaed0c7704ca552e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FRX451581347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7d5046a2f5c3a02933f906f9a1782c337166c5d18a19c9482d2281bb4ddaf9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX451581379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe386e96a4cf1294bd6c515e3ad3b0c9fd97ea1728522b6e963cca7f5d80827f1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX991580845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c5a53cd64d513d99432e8948d29221df850bdf9b2100ad6cc9e989de0d3beb. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FRX991580849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a30c39e5dc6fd33db66c88452a3f49b438a4616d52450df20387554f7e7fb4a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/FR59R1832659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a21cdc63fbe94b06bf4ad51e4ef5231adb22fa417a8412441d006ea7dc9c42. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/NL8RL2338514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e0b4e2fec3340f85b18c2c593789d593921079cbff0d0ce80bf3ef6ef3c96f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL8RL2446276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00519f536c4afac83b8123a3ddf6b1f7f6ea285209912dff126ed723e8326f6b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NL8RL2457355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493c83ec5536354e0b4f8995c657a3c8fdd92e01bc82dba6ab03305a6e0d9350. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NL8RL2509600.
Si me vas a abandonar (El Señor De La Cantina, En Vivo)
Ni plata ni nada (El Señor De La Cantina, En Vivo)
Ni plata ni nada - El Señor De La Cantina, En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede8e0635aa9c543fafb7aed35bd0bbe4394fd11990bfe5ff12f3ec3e10f876c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FR59R2592885.
Por tus desprecios (El Señor De La Cantina, En Vivo)
Me rio de ti (El Señor de la Cantina, En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdd5de88f5b52f69107ad94b4f2517e9adfe5c8e071ce45a52b641c74285a5b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NL8RL2536983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3967936a26523dac2175cecee9d0485512b0e5808d68739dc3ffcac8d35664b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T00:05:41Z), 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/NL8RL2536985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaabb64721ed50801045065faf9c453fce24b16710527f5a1cc2bc7ea998737. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZTPX2582082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27dfd68ec3d3164e47c6523b90aee0c5fd6be138342471c547426b9df2116a5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/NL8RL2566084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541fa6b65f68c4c65b6e9b40f669872fa4e01622d971d551c355d2c306443336. 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/AUMEV2521799.