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 0xf6433f02a5719dfb1692ee8483dfa50e04fbcbb52324d3cca70fd9368cd78b87. 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/6078db6a-4d2d-43f5-9348-48c5e98effd5.json and https://artists.proofprofile.net/proofs/artist/6078db6a-4d2d-43f5-9348-48c5e98effd5.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 0x298b405b4ddef1f7bcd4d1b18741e5d0f42254bc99c8709c1258f2754ae605fd. 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/UKXN22243326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc392f2077143faec3fefca48c05ec1a5b714d352ebcac3d8f9e774b51b47a8df. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES71G1916571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afef950eb471fbdffe1fdd7673b66a1beb71779287da4fb110709cd749baa63. 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/QM4TX2403731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e93e3463bc3c61ae25305676fb4ce6edae3d3ca9457b1fdbd03918b55dbc842. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ESA011874712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb60054aa78672a9f15e76ac874c964bc6b5d0431b12428d233350b591a6e7ed. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ESA011756578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880257903cca2d43f13a72882976654b8be50a012d23f15d74b4ed21eaa589fa. 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/ESA011756579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ae7c21a387f9d82b686f13919d7ac5aacc0b74db4066d0d6cb5ada720b3316. 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/ESA011756580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3851b1bc5514369b456010dae2f034cbfbc8a3c1d506048363914ad744c901b2. 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/ESA011739810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad6de81af37770d94cedfa3712ec8b5f8880e53315f1d499070cdafd4021ca7. 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/ESA011818581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70191bb6d85338a0c1a9f3114e2e63d87ba29657a4ca0c959a2e8aef2dd3a3a4. 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/ESA011818588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdcf49a6424ef56e14f165aa663fae14082811c182a9a7db5d28ab8c3b243e0. 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/ESA011715714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa1bdbfe0996a0bb99a75b7b8e48ec3bc9bfd0c79d7a8fba3ec1f86a59e727d. 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/ESA011713385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d26632172604b94955f5198a213c6b9cc08d522614bee1b1eb5e7d280e65ba. 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/ESA011715718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87034367c4b7d80de644bc8475014f99bb1a2d59c433337491e5163f698c885. 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/ESA011713387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a1fd61af6f90f44d91ffddf11284bc42e179946c2c2d219650e14dd6458466. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ESA092405337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e07a87214750017b68943888012d2d8951c3277456c21c043b4a04616a377bc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TX2403709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22a3b6619c6c597c37086c56a386a465d250ac57a76a9930cbc611133ea066. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ESA092202040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7faae2594cee9905274df55178b884fc5f7263ed4c855a16b2683913b8168e. 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/ESA011771478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3851b1bc5514369b456010dae2f034cbfbc8a3c1d506048363914ad744c901b2. 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/ESA011739810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511226969576e1f632e3e16c25e8bed3673617c819f54ca6e53cedb8cb84b7cb. 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/ESA011926803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fa941bef01c4ab84bf957dc545acecbdf869bb2f1142e4f62dee8eb9075ddb. 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/ESA011924975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ffbde69245ba40888166196f3f8003b6277160de840a727bb696f517b926c1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ESA011905476.
Avisos Parentales (feat. J. Dose & Blasfem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124071e80d9d102dfaa84dd0dc6a5e175552b9daee338a29566312c6cd9046a1. 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/ESA011810554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0662f8cfc10c9324d0e94c7c59c5cf4162a47c3952ca206c11fd5a2b34dbaa1. 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/ESA011810557.