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 0x4a0479f0408c3bae2d24b2b6308407623ea62d2fb6bad5bd2b41a8ced9dbe347. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2de469a-68a0-4df9-b741-41b0fd1ec4cd.json and https://artists.proofprofile.net/proofs/artist/b2de469a-68a0-4df9-b741-41b0fd1ec4cd.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 0x11081e8db0ed972ada8185e48625e427e81934aee0d9b710e37886a36ba80139. 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/FRX452491672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854e6b3080503c229e8f4c1767c279935c67b9fddf1dd8a1983a08de78df34c1. 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/FRX452491673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a95ba218018ce40e343fd768301b6dfb2f61d82fb9a3c1a485519ec7e1def8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FRX452491674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504ff3dd4b79159ac7923e486d89324778c45ded8f5e186489eff66cff298de8. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/FRX452491675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a842226f0ffd2a2f24b7b3828a68f83c37b1cacdb7f27e60ab6ff82281cd7a. 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/USHM22345581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66ead41badcf54ec943800bad3e26571bd691612aa8e8551de35ec5074a0715. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRX452480967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11081e8db0ed972ada8185e48625e427e81934aee0d9b710e37886a36ba80139. 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/FRX452491672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854e6b3080503c229e8f4c1767c279935c67b9fddf1dd8a1983a08de78df34c1. 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/FRX452491673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a95ba218018ce40e343fd768301b6dfb2f61d82fb9a3c1a485519ec7e1def8. 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/FRX452491674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504ff3dd4b79159ac7923e486d89324778c45ded8f5e186489eff66cff298de8. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/FRX452491675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a842226f0ffd2a2f24b7b3828a68f83c37b1cacdb7f27e60ab6ff82281cd7a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USHM22345581.
La Primera Gran Reunión : Don Juan / Cantinero / Sexy / Mentirosa / Muerto En Choroni / Kung Fu / Cariño Mío / Regálame Un Muack / El Tema / Se Acabó / Báilame - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7133a98ffcf501f76794de04b5c7d16b2a3d6ee2d705b55b8ac90132c354df. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRX452480961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61875f3de83f56acf778f813d1c0a911a9ac833d0611c40e32ffd2456dab4e07. 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/DGA072435443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbb3865a250247d77e4d5211c1d9dfed5e8f9ae8d76a283504a415b491d5d24. 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/DGA072435444.
Las Manias - Black to Tropical (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11081e8db0ed972ada8185e48625e427e81934aee0d9b710e37886a36ba80139. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FRX452491672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854e6b3080503c229e8f4c1767c279935c67b9fddf1dd8a1983a08de78df34c1. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/FRX452491673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a95ba218018ce40e343fd768301b6dfb2f61d82fb9a3c1a485519ec7e1def8. 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/FRX452491674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504ff3dd4b79159ac7923e486d89324778c45ded8f5e186489eff66cff298de8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FRX452491675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a842226f0ffd2a2f24b7b3828a68f83c37b1cacdb7f27e60ab6ff82281cd7a. 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/USHM22345581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7133a98ffcf501f76794de04b5c7d16b2a3d6ee2d705b55b8ac90132c354df. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FRX452480961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66ead41badcf54ec943800bad3e26571bd691612aa8e8551de35ec5074a0715. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRX452480967.
La Reunión 1 : Detalles / Blanco y Negro / La Indiferencia / La Mazucamba / Me Gusta, Me Gusta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0242ef69c774db3cc7332344ba4e73cf7783127d1bf56af1ab9696d0a4f0f32. 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/DGA052275542.
La Reunión 2 : Traga'O De Tí / A Escondidas / Obsesión / El Papá De Los Amores / Si o No / Mi Princesa / Te Empeliculaste
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac45e69ea7719c08ff6c197ec2db68d41568266b975b9261c26ec883d8e1f6ea. 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/DGA082288117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7133a98ffcf501f76794de04b5c7d16b2a3d6ee2d705b55b8ac90132c354df. 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/FRX452480961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3e1c0c9758a20230738afb26697ffdff41b40b49724470a1ce795bc12da9de. 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/FRX452360863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dd84e75eee56a88246683f8bd42a3239ac19face93f06fa675b6225287a480. 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/QZK6J2485758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b555182018a9a26de01fea4446d0fa1805925f552ea6703aae201746cd35ec. 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/QZNWZ2272329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd7badd512fc8ee21416d76af02ae1b3140c4fa8827363af444ff5d2902f444. 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/QZK6J2485759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1f1eced2cd796df056c3dd12c637698a86b0a23b4f7820007cee1ad4e51208. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6J2485760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cc9605c80c2a8981453b658927986b608e01e8873c9f9b3e1af6f005e10bd7. 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/QZK6J2350123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954848becce140d37f72280e29df9eefd795ce96a89e374b3f302ce92e78d4be. 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/FR2X42507897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fd4a8d2e98cec01ce009d7a8f36c2565f9f22c7648de9cfe42cfc25bd89c09. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR59R2564309.