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 0x3cbd27a053fed4bf9caeca954d33ae602038aa8e9980b6aae1c87bd73cc8ea08. 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/b3cf3174-a7db-4005-919c-96a8b5b82fd5.json and https://artists.proofprofile.net/proofs/artist/b3cf3174-a7db-4005-919c-96a8b5b82fd5.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 0x43821916b87f19ea8bb193e7723706bcf77472e172edcd84818e6b0bfaba2de0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES71G1752468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1192d51746da63ad994becc79e8eca8cbb2adfb33708ed917fe2c62b0f9d036. 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/ES71G1752466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43821916b87f19ea8bb193e7723706bcf77472e172edcd84818e6b0bfaba2de0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ES71G1752468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aaeda3159b4ff507976b09db572d9d956e7235d606b6789abfa14e62010c04. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES71G1752470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56086fe9e1c0727c2a062253ea29dfb4b2a19cb4de1e43fcf06f0592fceb59c7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:43:08Z), 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/ES71G1752473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6cb0d213ac7f06ef535eb91a2ff5ac10f17e878c39251ce29fc1755935b3ec. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:26:46Z), 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/ES71G1752481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bf7efa1ebaba4547fab37f9f72606569f2739886cc1cfbdc5b433afa3f6c63. 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/ES71G1920475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660b5f910a5d99a87067ca2b2772c1b7c755e0004d191db555c61f3371c9c057. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:29Z), 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/ES71G1920479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c0e8cdd5b3b373d1be975647207ee66d23e1c16f63f058e4411ce0476e331a. 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/ES71G1920481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36daa451f7b796fd466d3a5d0d65b12f86aeb9d88557df3ee5efdf38436f309f. 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/ES71G1920484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0170176d79447305104c2d9726920b726fc32d6062657eb42746be7c49864521. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:28:01Z), 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/ES71G1920605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b61f9b2744d30870a0504cc5c031bf844c1f2ff2031ed4a1d1a5633b0413884. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:53:51Z), 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/ES71G1920606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f1fc900f89d15df23992347d02786ea2b18280d2edd06da4a38a3352ddaa94. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/ES71G1920607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f44abafacf16b0a4061818bacb11aec21169a0bcb1bd1fcb5879a1375757db. 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/ES71G1920608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ab38a9bb52b6520387c6bfb5f7a8d2344b8bac974a3049eeda0ab3916fc189. 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/ES71G1920610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ed1c248b8763d706cd0c7abcc464519d1c05a04ce37b411401b4d7c0ca6157. 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/ES71G1920612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853ef3a39249b6f0f45439b16755cba2e1c946ef90434907846b2f8c45e8e4ee. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ES71G1920614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc1f7ca751f687d26c3eff3c9f257f0823e2ce9e823f8bd2b40ace7e76c9304. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:59:10Z), 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/ES71G1920615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a697297523bfaabaa7e5f13c07dab2a79f168c85cb62c5da7a580193e07b91. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:25:23Z), 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/ES71G1920616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccc5556dbb1b2997bd1a11bebdcd6cf8bc11873c155bb0573ce577ebc454694. 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/ES71G1920617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f25300b9f3c3c83fc325bf57179a8ef3a393fe0355bdfcf47d808811b4609f. 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/ES71G1920618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d4f04ddab61d542c9f2ff567191cb1231b22420feda2cc05a717143f97084e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:43:50Z), 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/ES71G1920619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb5b4ce14ba3b899ee9878741019e3312709cb800ec7a0128bc557ffb6e19d9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES71G1920519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a0da4873c3042e99e6168cf92364664d6afb8e64d902b738d612f7ed5b7de8. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/ES71G1920521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541a3a5b7b9fe15969981b9c07180bab62d0096d0368f1bf029b26d917504c98. 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/ES71G1920525.
Fiesta Mix 3.0 los Pincheira del Sur: el Gallo Celoso / Mil Cantinas / Valores de Mi Madre / Quisiera Quererte Más / el Amor Que Te Di / Ella Tiene un Amante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3ea4fd8d008c47c30af3a8de1c7147e82226819b9fcd7538817a51f217c40f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42327866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef46264957b6347d735312c54596cee4eb884a90a46c32b850ef4ef6f6b97df6. 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/QMFME2309513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1aec73d3cf1b1ce892b39f32279b3f7481cd59ada99db1474d1042b563ceac. 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/ARIXB2308593.
Entre Copas y Cerveza: Quiero tomar / Amiga cantina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41452e369f3e842a34de63b3dc78d16f65277c3b0598f402b0af3eed1892927a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES71G2415254.
Entre Copas y Cerveza: Quiero tomar - Larga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876d0b6cce3e54a838068048659a960f7a62a1cd7eb7562862520403eceb94bf. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ES71G2415255.
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