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 0x5b2890baa01713421ce5626949859aa6e02e08a1dec2ebd3586a0b486809daa8. 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/8c91befa-9bfa-4d15-b2f0-dc25b9c0c03f.json and https://artists.proofprofile.net/proofs/artist/8c91befa-9bfa-4d15-b2f0-dc25b9c0c03f.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 0x67b038ae7ca11d421818968138406518f323c9d3f05ade0045799522da8382a2. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ES6700302803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa955f2d25f6c7189d3a96c44b22296420d30aca3cfb736ce95d6d8b013c75ee0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ES6700302804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abd80206ffaeef84b4e3d92fabb253ddedda0b500f5458414b4a6fd24361bf1. 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/ES6700302805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6496ae9a5776d5ed24a0d7b03b8a3b8bcf4800e26892babb9cb501078788b829. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES6700302806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770e6b33c68616cb9e684922e503fa9e4ee8302eefd8901040342a8e303ce447. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES6700302807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a514411cb860fea00632c255f6ca1938792e8992af32cfe4374b67eaf1fec3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ES6700302808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e2d09bbad06384f68407f9effad1edfecb989ea58a951ba03f1a482d2ff1d6. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ES6700302811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27939dcbd4fd15be18367ae4316579bfca494145c1a677c26e5344ba66060d16. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/ES6700403605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc93bb7c2596828be601c56ec7f39ca8c4f0173cca87afa9a3d608ee742f283. 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/ES6700504306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ddb2a2566487c07ea77802093a785e6725d7128dcb7ffc59893081400cac9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TW1839950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e004c1d4d20f7f12c4bb512854534e62c5a9badd6da1f5ec26fe70b217a5c0. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QM4TW1839940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1f8197c01e4ea88845e172a13aae233d95b6a68eb6940f3232687982fb39d4. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM4TW1839951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ce744a8b7a61c89091960d7fda66fcb29632c0c0bd490df1086d903ddf5f86. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4TW1839941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f0779b0d1079d782eb8d32151166b5c9eea898e2f3545fc90026a28002e4c2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM4TW1839943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf490c6a1a58fccc14f1b463b2d837c10bd2e80b7997dfd37ac088750e87658e6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM4TW1839954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5ea0609030824b548d1b6086a32a2f4476f702d96da81ca8149f47e30dc8e9. 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/QM4TW1839944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903c9a37e197b32cd62f1c664b75222770b3a3dbbd73b160d13593efa34860ae. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QM4TW1839945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6638d728c1cfe73ae42f5c99679aa53f209bdfe641e934bc40948640f53a260. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/QM4TW1839946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd0dbe0a43cf7c44bf58fdf84bd85edad71e40b21b81d12b5c8303dd7fd26d0. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QM4TW1839947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba1938da118ec9cc8f04dfc02b8fc7a1ebe73f39809b959fbac37e0b3924644. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QM4TW1839958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3f45ddea8699047cbf2ab3350d365ef9382e4f86b5a142bc8594967f73ef53. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TW1839948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ab0676d7a31daae77a8df059c1f83036c4bbcef37e8af05e60c19a9e963172. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/ES20D1901401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22565805840c3133d78783e9a856c37fbc298a9f15b83f58d5a018b4d4160e0. 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/ES20D1901402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f62aefd9e542993dd13910af683ed9d585a0552030e232b64fc1744e2bc12d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/ES20D1901403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c6836772cf56d50164def0e20c366bf31719323526ecd49dacb24fa03950de. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES20D1901404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a3ae4d08be4150fb436f07e2ea9cc4049e74093eede84c6c64f61a1ff54ce3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/ES64E2307003.
Autóctono Edición XX Aniversario (Remasterizado 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94d58b9da1044f25cdc22b20ce826e3561286719092b345b769daef84a9d88. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES31E2505935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ef7957a59dc94dce0d6bc2012b2283eb560396b48148346c99f2aae3860483. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES31E2508621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94d58b9da1044f25cdc22b20ce826e3561286719092b345b769daef84a9d88. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES31E2505935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321bac98b7ed1d4b66454cf8225ad8f745ec63767bd2dc9bff8b51bcaa223642. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ES31E2508622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf411b538c4c6e7841725bcfac921976f550ec51bfa1a9d2ef50ce598ebd7caf2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ES31E2508623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6abb6f5009e2145fd8acad080c80acd50bffa95182b91be0885eaa8d56032b9. 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/ES31E2508624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ade4ae2195a0b31d800545944bd278bab5f7cc0c213da52a11075439f2003b. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/ES31E2508625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff7afad2880fabb3af13cdc272fa13b57ffc923711a37edbaebb724806250b0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ES31E2508626.
Seres Urbanos Hasta Que Aguante el Corazón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c67754dbfde7adaa5b512bbd43fe3aa4b3adaed9d066e9fb5ebe0167756f23d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZNW72305574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47dc1be4a799b8435b1b1bd0aedc8e8bc3efc9a846a6f81b83488ebb443cba8. 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/TCAFX2101455.
¡¡Stay Oz!! Hasta Que el Cuerpo Aguante: Tributo a Mago de Oz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1f0f558cd156a5bfdf4b2dacff93e7539adc3d582c8295fc27abf727605a63. 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/ES71G1830641.