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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f72268a211394e6581812f638b5c50b61e40325bbc9e98597bff4e4eb0dce83. 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/70e792ae-200b-46fc-bbc8-086a93ea5971.json and https://artists.proofprofile.net/proofs/artist/70e792ae-200b-46fc-bbc8-086a93ea5971.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9069be377dc825fa85eef2651ae7ea942359b9f7b1565535d4a2f2a4921727. 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/ES7581300338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b8e46172dfe20e8c6c2a4b9a4868c32693baa526dd86436d0eaf05a391bd86. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:47Z), 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/ES7581300337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82163f9a4d2a38ba853525c05428a4914153c59931a1bcbca53ae325e63658ce. 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/ES5371400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070a6bf68cf20fddc386e28e7c6bdbde536ad75acf1f841e0792af0867db03dc. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:05:40Z), 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/ES5371400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab9dffae84c0be200388e5b9e05ac45f6b7d91a8019e1dc1477707380e1b4ec. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:22Z), 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/ES5371400340.
Grandes del Cante Flamenco : Perlita de Huelva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626fa33afad600c2ca28a3eb470ab3a627b85f3f94a1c42132f266eb00fde335. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:06:03Z), 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/ES7580501142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abaf1f920d21f75ae886e30ae031ccdf73f0c968f65f38b0917768f211075e7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES7581300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3376863a14c25a4aa089df898f4df4db63a792ebffaa93a6ce9de606a73b8d10. 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/ES7580501137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d13d9dc5fdfc81670db84fcd4ca10170c1bce06a6887dc015e58e39143c5c2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:52Z), 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/ES7581300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab27c0bb2379ecf0b4daa6b0403267fa8ae148da0fb114759f17bee72ecd875. 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/ES7580501136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a5cdcff82d78f43c9eacafecc5922a84d476bf072b05935709893253ed9274. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES7581000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288bef33f6e75cc70ac2304d50c21b3a32175f2b42e3557c01957231777f8462. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5299100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab27c0bb2379ecf0b4daa6b0403267fa8ae148da0fb114759f17bee72ecd875. 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/ES7580501136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5ca3aaace0fb61b650e9f29f8d4b743827e72a0fa0adcf912145c46d655bf4. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:31:08Z), 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/ES7580501140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44508db86ec31849b887b8e7765d15ab1ff33cdbf0fe997a29f2681d7b8d23f9. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:37Z), 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/ES7580501141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf29aabfd4ea29924ec86abe90f639af4002df463cbba590dfdcfff31eeb09b7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES7581300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322c30d92e57c28b8433a77d5fc13dc0c915e1f89c39ca3a0e13ab1a123d2c39. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:15:41Z), 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/ES7581000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70bd6db033ab4fbc63d9b9ef0fa1182220f04cddd332b6d88de8eec592c0a92. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES7581300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dd491be955464217cd69e77800b0fcee881bf4cdcab336aad4698cb155ba08. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES5371700886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ae19c736641a9fea68086097516a6882d3506c85a44d303e13429bd7e0e05e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES5371400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10475ebcc40bfdd2d709f651c3c358d4bfdf70c9ba0549d56d46f229d14697fe. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ES5371700863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c63d2f8cf9f145a8fcdd12a967e4eeef83bb80ac3d3315d6414e9f3599db4d. 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/ES5299400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf56aca4ec884861b17780b638467433ca8ff22391e2b752a7547efdcbc3030. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:11Z), 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/ES7581300339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe805d600e757770ebabd9643aa201176a15856f319101be7c5a7d7e2ed2ba184. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:42Z), 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/ES5371700872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dd491be955464217cd69e77800b0fcee881bf4cdcab336aad4698cb155ba08. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES5371700886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab6c37987f2ff5040b648b0228489ac0eadac9f41f1ebac71a0221683e82170. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:23:26Z), 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/ES5371700889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288b3da3f1619b23c20c6442e1b6010dbce80cf4a45164a23fdb2ab7d994d2f4. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ES5371700891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6160b53e0c544a40b1f73e769f0f44c6a5316fe1862bbe02e221fad33c97f7. 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/ES5371700912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a297d4af492fa5bb53e4416b6bd1401715e01d8ad59708d934cfcc37bee74. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ES5371700698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d4c07afb85d01ce7b113bd0afd09a6857476c8645cd394cf877575d347812a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5371700920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7190ca2a36c885015fb5e9a9dd4b02129331001ad67c83e32b206f65e1e2de. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:22:55Z), 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/ES5371700879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c2922da29cf29c74b5ae06b1d265fd9b8ad154782c9a4d25ac1f3009d86588. 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/ES7580502433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8515326df2ec86098824041ee89d573ca2bb0daa350d3bc5fbb304f2aa039b. 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/ES7580501135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8515326df2ec86098824041ee89d573ca2bb0daa350d3bc5fbb304f2aa039b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES7580501135.