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 0x98f94504e63d5a5ffba4f4c43b2447191879e715b333f66e72499aefbf4c42b4. 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/ba2f7271-a155-42b2-8f35-4615a91de3c4.json and https://artists.proofprofile.net/proofs/artist/ba2f7271-a155-42b2-8f35-4615a91de3c4.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 0xc780f0d0cb5bf31dba100fa7d3eecc3f82f182b9e39f47729c9f57271f6f3b3a. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FRX761589225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcfa40dd0fee38d24ce25a5e6055c2efcf7e7656a9d14187e59190cfc08a28d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FRX761589226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e45d88e8038206de4eb964df17935740c58bdcb5fe7553e3da3e341e27279b. 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/FRX761589230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b96f66c2d003316b9a16282d9afe9b535f944a1b29adb7a5eac242b1a912db2. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USHM21437202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdd0e5ece4c8c683985e5d7da418f3952da989a8941c0900aa117099fcfd812. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USHM21437205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d74a4fe2016931a54d61801cc468203c250e61136455309c2cf1df9a710663. 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/USHM21437207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263567fa91f2276037700a78acc807f8eef64d8392320452a38eb33e3abf3b05. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USCGJ1472123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44bc9107feb0a361624edd38132624267b8b8f5d2f3668f73ca4f059439e195. 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/USCGJ1472125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3ae8685513ec2523f70181194e1845f81b6b65a5f45b79303a4c7e636fb946. 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/USCGJ1472127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bc7fdec21f4d3eed7235f7a5a868681c75d586e1d66bb18ae3df2dd4fbd1a1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USCGJ1472130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6708ef32239ffba0866995c34e5999983b97f79c8d180483e1f9db0e93bf9a09. 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/USHM21473144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bcc22e7e5deff8e6f76b074a496088de33ade5c6fc8dd1ee35d115121d76ef. 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/USHM21473145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c25a15642b41d45748d24e03f82c724f0889c13c160fc5b61a152f9c36d1cf. 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/USHM21473150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d6f787073efe99e98094cf5d8382ebb40f4e4677a8f4e30214669b6b947654. 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/USHM21477594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaea0487221cd99a55b70c4546c5085646db1b7b031d262411177319698b767e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM21473179.
Tarde de Toros... (La Reina de los Sones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e79ed6160f5d7b8738b97eb83ff5389bdc75db6076ce8958e203518b0731f66. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/FR2X41838241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822481bf83bf937b06e9a3b43984bd6482ddbae1ee5093eeb958c366ce91a106. 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/FR2X41838242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f80b9bc13b4037d09a17dd60b1f103e1b4c9ec353a41d4bd8bf69b6e2a7643. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR2X41838244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442666db3ae903d4a9a90f772d5d0f9413c0c2864bbd041412f2807d5d489a52. 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/FR2X41838245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dd394728cc948b4e3513eecbce532a877eb020ada144aeb9e3b464437b9bb2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR2X41838246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad948ce2573641d6507a1945340b32ee9ea5d323db88c5f6dd851e745df68ff. 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/FR2X41838247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff9086b227bb2eec06ff7db2a15c051ce89e10defdfc933923b4c8e53e95182. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/FR2X41838248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d74e9352a836a0a2b391cd7ed263011626fe93ba734c992ef5c93c0a87a924. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FR2X41838250.
Popurri de Sones: El Novillo Despuntado / El Pajarito (In Live)
Popurri de Sones: El Novillo Despuntado / El Pajarito - In Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd323c0b5d4b60b2e1199bd0df33bcd6dda1ebb9e6dbcb22d5126949af9d9d996. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FRX202046303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca2de19defc753f635289cb8f5552a57fb852e4c2e169dad88ede1d09a36f46. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DGA052074214.
100 Años de Tradición (La Reina de Los Sones)
La reyna de los Sones - El novillo despuntado / El Pajarito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d18b23edb308e341f5e3274433ce38548a7c06b1ab4bd050fe304c4e5fd6a41. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR59R2265230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad489bda87fdb7afc7f3e4324340c29c7a94afef1b96281395defb034a75d35d. 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/FR59R2265240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4be965af54bbc5b1df1249476e237006974c9a7704d998cd92f6a289372cbf0. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/FR59R2265242.
Oh tierra del Sur ! - Flor de Piña / Sones de la Costa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488ea123e5a8833395573ce9f10513398c97cb31fd017bf563a657868ef3c595. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FR59R2265247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f516859e1cc9f36451a55164c16c3bc1c27462d1828068d83523e47be5870e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR10S2379895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38704a5c762b964e952322e4e7cf9ab6327356175e07124e8d5fbff4783e6f6. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR96X2346698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af60f44bae972e332ec2e7227b8454a2a0900d719758c93a0c7c3550f3ce062. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DGA0H2373180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5933c0d6d2d67c385f44850e61ec4783b36f3a1283e7c2998c56855ba44d2ff1. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/FR59R2568738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe211060c50b1310710a6be515fd666e0f98e564ecd15c5b74423733e8f41c413. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/FR59R2568739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6a31380a054475efd6d9441d299b319875e46304c23a4a6db4cbc1f78eac85. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR59R2568740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bd496aa415efef849ce94aa34a2ad60979eb3088da9ca9d6456764bf97ad80. 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/FR59R2568741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4489227ffcc8b8951bfefb2c0cf9fb0f6524517447ca9911c00c4cbf15e6d3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/FR59R2568742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962050f3a53e7b214188b4a7facae85536b27cc96ddd043bd45744c931853431. 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/FR59R2568744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713efccece176bd680933089d80190f308eb757c8ad4d58b41c52607275f0acc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FR59R2568745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fc394cfb5033a82c9830f4cd0319b33058798c70a2b631e2b68b441a72e98c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR59R2568746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e914a6838dcabd97960332bc31ac39bc66ad26ec89a4638a0478fea772876a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/FR59R2568747.