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 0xc0f35d365c292df616d23cf6a01b778573142893e4c48ca6bb7d53530bbd6629. 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/9a783094-68d5-4773-803d-50b1e62489c8.json and https://artists.proofprofile.net/proofs/artist/9a783094-68d5-4773-803d-50b1e62489c8.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 0x4241dd7acb29599cbe0071fc49edb4d0d2e33e43fefeece92cd8159ae3f2901f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA61876471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a8382a7b3512a6e0e1aeb488a404e9db1ae306771f2fc4c7d11c24c8ec001d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3B90600024.
Ahora (Remix) (feat. Angel Doze, Voltio & John Erick)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd168b23d7e6a769f5a7fb3990c488f96537bc251d50ec4719caaaea20e4c674d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1044965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4482befc9aa7e9ef7ff637d3e7085b47e4fb03246ba493e7295be852f40346a5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TW2026673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985fa8ddb18fe95cf2ff08b792eb651c82aea0104f8f9afb25aed1e7aa0219aa. 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/USUYG1044970.
Guaya, Guaya Rompe Cintura (feat. Newtone, Angel Doze & De La Ghetto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3fd5701d21b10511ce8617c76cbd715df33690a143b9ded77f9e8acfe8a3f5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUYG1044962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a8382a7b3512a6e0e1aeb488a404e9db1ae306771f2fc4c7d11c24c8ec001d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3B90600024.
Mutafukaz (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec3c30dba7fcb7dcd7c3c65a55eb324693370070ccc1b7ed83d0bce5f90ec42. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMDFD1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf432aebc302771f93735f923189814c353e868c34d939ef1a7717a0c9ff94d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZGLM2185247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25100186899ba91b35f2dcf440023abd040d3a71fc7bf6ff243d4da17b586dbf. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/NLCK41052836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852ecdeff9c62e563974fe588d12152facc37536c74c580bd57d6c16b39175f7. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USB271600187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08f6c1d8d2a8fd11885abfd1a088f09d4454fc54b3eb6e3cae73bb3b8e91ec1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2031834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9fe46eeb3986de5b48b0df7217745eba9d894d64403209a073b8308a92f458. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USJE61300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b7b38a7a037788ca92cf9f2a861691ff99a1840a8ed753b733023864fccd3f. 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/PRA010800517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc92940559684953457700a5618aa0a94f9100b5a3e935833a66357f82490cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2032480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afec12310f572760ac33d025df08d97de2ac5fdd5899f9de1bb54e04c4b013d. 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/TCABO1388429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d297e832eb75257f63d48335db741a6b5db6d20b208fb5174ec85ba71458ade. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDQH2140074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49da675b43e3266ffa0ba3812aeefb48c838335109f2e99c12d057fe6c48c8a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMBZ91736822.