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 0xfa352adab05145642f94f9b3d0c215b406e6b1bc732de166cd7dbf96e6e6d9ee. 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/eda92650-6531-41d3-a503-01c2731d59b1.json and https://artists.proofprofile.net/proofs/artist/eda92650-6531-41d3-a503-01c2731d59b1.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 0xbaa56487c7a7e822ca126e36fed35816fd2c33a77bfd9b93b79efd87a47f6922. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBMJG1802444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32954cd876aab76fe5573f5feb06823fcf6fe0a74649682335ba3565e937dbc1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5151900721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1411429474ac450a7641482563fc0032c8971515d9cb6f2f275f05a745d380. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GBMJG1903615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c74b82f64e7950c3187c8f0af69b9fa59a48d4d7f9010fcc72d5f967b2367b4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5151900652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7bb1943f229498fb579fd3b919cb6ecbdf67ba1a010100f924192f28286c6d. 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/ES5151900716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde84b9ffd41d278027ce81eabb3464769b9d9d6aee5a6ca862773f6c95074092. 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/ES5151900700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73794543a07646b3d10b46ebad2e1d5d7a6fa437bde95eb3d61267e263c8acde. 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/ES5151900710.
Te llevo dentro (feat. Rozalén) - Mix 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1fd385a678e02f75a20c9df3f1140fd8fde312a5e0c21bd6f4540df76a7544. 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/ES5151900711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51955a6bba85fd70f29065e10e305e6d740c2c6d350641eb031e298d45cc9d0. 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/ES5151900712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc340b3f711ea8c5c6ac0e7f995bfe0a79a40fbebdff31aa33534afd1d4428743. 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/ES5151900713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507921dbfee49f0cd89b3dadafd8fb672ac26ff0b891e550445125d77abe8b8a. 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/ES5151900714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d026c7e811c3595abafbb55e8d09fb929e2101fc1f85b012ea68467c347573. 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/ES5151900715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7bb1943f229498fb579fd3b919cb6ecbdf67ba1a010100f924192f28286c6d. 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/ES5151900716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb119087b59975721b0c5746c2f1a0a59524eaba54039edd7c88af29dc45aa482. 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/ES5151900717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61369ca465e3f719e61c9b99f5c2ebf61bdfdb4367db59c9b5be37dd69a05bc3. 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/ES5151900718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840c5e2d480c4a3c8260bb466e4bc7c3a3b125c56b12100c20bfa023fc74cd84. 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/ES5151900719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc302f917b404bfafa17999bab994e9861e3b67775579b54dcecc295c296db835. 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/ES5151900720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32954cd876aab76fe5573f5feb06823fcf6fe0a74649682335ba3565e937dbc1. 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/ES5151900721.
El huracán (feat. Mr. Kilombo) - Acústica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f1ce35fcf38299eb04f2d924a82b075dd6e5b81f06ce083f66efbfe8c34c76. 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/ES5151900722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c74b82f64e7950c3187c8f0af69b9fa59a48d4d7f9010fcc72d5f967b2367b4. 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/ES5151900652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa721b785fd9eb37ea9357aa2251ec3878471942aee0b5f5528a04b186fe168b8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5152000682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56db240f46f4a5d1aa10904a7e315b1d27b4bfc3d3d475e31b06b21468357895. 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/ES5152100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4096414134b110c2ecefda44490e9920ac23fd64e12998d61a3778902e40aee. 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/ES5152100281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccac6c7dc59e95a558842bd3506223724ab4b5b5660c170115eba6af792aeea5. 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/ES5152000236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24d7e662ef425d1bef2229e634071e32408e08f917dd222a02a64e5b5adcdeb. 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/ES5152100282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a110b8959111f4087228dad85106cde4b067721aa02d6067f4f495d7c2b569. 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/ES5152100283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd689250a210799072288af462e79942f784df3313ff80beba0476b095254b49. 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/ES5152100284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098c9a73ad03fcd0f59503fce92a0b359e23c5159df525cf799901aa61bf2218. 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/ES5152100285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa721b785fd9eb37ea9357aa2251ec3878471942aee0b5f5528a04b186fe168b8. 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/ES5152000682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac552d9551598b8536b78e15aa3e26a3e3c2d8934d7639859b879853961719e1. 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/ES5152100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86b9ee69ecbe729375335cc2b984e29437bb07c1c23bc1dfd38a8aabb9d93dc. 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/ES5152001197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a998faf85e6e9419cd57c12233724bc7ed2f665429d3354c10e3e39277e382d. 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/ES5152100264.
Las grietas del tiempo (feat. Luis Fercán)
Promesas (Live Riaza) (feat. Pedro Pastor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ffacf3c1a21b40eecce92e52c23653ed72f508f5f3c8bfa718a736ed6f6af0. 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/ES71G2020574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307357c88003cc14c0ff393218c2ddd2bc82d972a22f3777fe52f86d1a6b9847. 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/ES8022000010.