Doctor Prats is a band from Terrassa in Catalonia, Spain that was formed in 2015. History Doctor Prats was created in 2015, with the intent to be solely an online band. The same year, they release
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 0x3c1d624c136195aba89832ccc051d4e4f43374c390a12f1cd3ff3ac677a6d230. 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/c69bed02-3253-44b8-9341-3a2ace0a5908.json and https://artists.proofprofile.net/proofs/artist/c69bed02-3253-44b8-9341-3a2ace0a5908.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 0x646fb34e94538bde0827f41047069ef10fca2e8e0d0685e8a55e705273420033. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/SEYOK1500556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726a383b0c44456295ea5c3fb8db0d40c7bb262c069b9294007c52523e54368c. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/SEYOK1500558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf387782d2d2eefc604b151ce6d90ff8c24e23a807c87c58529201bcc3dbef685. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/SEYOK1500559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5bda5e1160e10ced2b93ca3d3e4e305a02d1a87e7bec75a121215b2cd14b8a. 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/SEYOK1500560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7e7fbb340e46af42253c21e1ea7ae4a249d7f2f6df1d5c29e6bae9a9efa26f. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/SEYOK1500561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f7b74da6cc9c19496cd45723f6129036de61e417381a5701b043730ce2ff90. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/SEYOK1500563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0981d491789bcbae03cd19ab55986b98f84196edbe9f0d9cf7e40c0f6b7115. 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/ES5951605312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e07b086281e3aa23a3bc23d98af0a12b5a96e719297f1dfc22d344f75702961. 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/ES5951605313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd5d6ca5b270f3367e08435f25b7603276d3daa090b4b79a2d1244bb0384e20. 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/ES5951605314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175b55c6ad00206f75ea29cb92a15044194c352b4cb482e66d92aebbddc3e596. 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/ES5951605315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ab2dc7781fb75ef51fd6bbac54d2a2a99053a11fede9f8cc50b8d976a18efc. 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/ES5951605316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836b3b0579e8d2c6ef924228e9f591b46db8c213a98fb64a14b6f3fbec13dd77. 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/ES5951605317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157b7e7837625370ca171b4cceb70f2eff043e48817adfc22190b75ddd6515e8. 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/ES5951605318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f6d082b48ede9f698acd2599994e5ce17bd194cbd8d95325e435fc927559aa. 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/ES5951605319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4946a9b9005e278952e8b2f2c85271a14acafcea41c95839b5f96bf37d64c3. 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/ES5951605320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7684b94cafb03cce16ea3e031d5ec32b059f204dc622d549a398f32438efa28f. 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/ES5951605321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72aef43b17fc258f9ef1ea72fe9ce7490baf7598737f77310972c4cc5ec898e. 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/ES5951605322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d5d642b3bfe108c5af125b37045ef41c3e0c3a4eccb332ebc295cd157f9633. 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/ES5951605323.
Tu Fas (Suasi & Albendin Official Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11dd76f3c38834a5a8a23ca81fa4da70d9969bb35826b7717a4ca5304f07a37. 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/ES5952206715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291ac45f2da0b6a7860a1af8d921d14285b6b95473c480fdd56983eaf25180e6. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ES5952206716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0821ca1d8f8529e8508f2d4d119193f4ca7c5ddc167bf6012225ac481bc4f8. 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/ES5952206717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3a27e0507e45f7ff10035218fb59cbccf3b37e5439132acee00671ffa318f8. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ES5952206718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ac06f657b54bb28166cc0a16cffe13da5027208b53468eaddd63f957824a6b. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/ES5952206719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114d18a2faa52cff13ff95a8582e271cc53aa91be3b192cfc6a87a5ca2fdee4a. 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/QMFME2015758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c50eefe2db142746a103dc2d02b477b56ea5256b02a15bf71497164c4349fa. 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/QMFME2015767.
Cap Nen Sense Joguina (La Nit de Reis Farem Realitat Milers de Somnis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a68bf011fdd9a01f443c0c6b3fb843eb5264a2d971c8100c3be79dc211210c. 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/ES17D1800597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dfba61910db2d85c1a43b218b2b4501a5805b3d0a191631ea9ec898517fa92. 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/ES51G2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7938c088bcd335da75b4b670955c49563dceb9dacfd2166dc858f8a62fc80b97. 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/ES11D2100515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419ecab7ffb6eb61781c83522d8be40c655a77e28ff646a7181e60d560430032. 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/ES17D1700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a83de1b1a20df47794a7ccd6a7a6a343690fc82d2ea6031414b168d87fb16e0. 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/ES5951705623.