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 0xa2abc4e9cfe3562441cb67e1327f03b91e5c0dfa1047ba8d13f614b4c1737e55. 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/f37c635b-8bc3-4803-9d1b-f414f0305b14.json and https://artists.proofprofile.net/proofs/artist/f37c635b-8bc3-4803-9d1b-f414f0305b14.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 0xb61a6bea686713460afaa2143a876db97dd8aec1a65f8847dbef4d676618530b. 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/ES71G2429152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50948e1ad8f448e825f9ac981b21d3544e6ce236a14d2c32fd9a5cab6f0bb7d. 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/ES71G2329239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b67c217067ba7059551833911e84e80e141043fc220dc9e1721598e57cdada. 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/ES71G2429153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78256e4a3c6062debd4ed5fd7dd49ea0817276a548617025d506d36f577ac4a3. 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/ES71G2429155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8f0e75da8ad1ebdb5844ea46781c7f1ee49358cbf022a529d94c10465e047e. 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/ES71G2429157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2f0c3423fe48d69d6faf4e9879725859b46c97ecdaecbc50a6e32465e95e6b. 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/ES71G2429158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c31a7bd4152e38e963ba69b9caf1088d2535d5325fb6fb1805908ab6ec02b1e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES71G2429156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4418eae9266160ca943150f997f3e04f3bd8aa12999729526ac0c92f9d3ca6e. 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/ES71G2429159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad2db06399b275116725a3ba2561a30de3d4e0b89169704f9825afc155b7342. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2429161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a33e3482201daf4936d9b109142dd46de55478eb3066da5ea5b165c15977b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2429160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1fc7bc9cec818c6743ae8764d3c07b4dec32979c984755bfa36251e29187a7. 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/ES71G2421652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218576f7ba3f1554eec7971ba991bca45037bc35cb0f0d23f0a440457d960e27. 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/ES71G2429166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c15c124dc532f7701e822f726cd2e26f426ede5001af1284452c76df6badbaf. 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/ES71G2332815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56552073e1f429e3477dde981328aeb9d3ea7fbd447360db156fd1cdfc331d69. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:51:01Z), 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/ES71G2337775.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ac6c6bd8e99721456c7cf7c98301123a6ae75b535c437d4b6614653fffdeaa. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES71G2429167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b06f795200f249961949dfff4c8334ba82a51214fc57490d8784289abf0299. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES6041812402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f03e07f86aa924cb9740ef811ef9200dea79b4d537b190d76240db508a92b94. 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/ES6041812403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935c59cbbfefa9cb9fd10c07b3752b60ec68b193dedfd9d4d4eab7f20df3b8c6. 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/ES6041812404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8465b994ae9ea2b1797b8bd4f31867ab6fd1abed4334ab99cd2932267f03e994. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES6041812405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7148d6074cce0629d42059669bd45763c968be0691f07703d092d60e1b1d4d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES6041812406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25930a3bad9eb6bfb523b1616e79d5754ec85ae120692bdeb05fe52fca1b121f. 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/ES6041812407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa430a9495ba11b88071efc8e0f7da77c1a752c1c7d675bd4866ffcb0e1dc2c12. 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/ES6041812408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4edb0bd1bd89b94ff9416d5168e0b7ff413ee87de042de07ae0cf2cad23ee9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMJG1616049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abb8a184014a133afd676064c853c103bd4a27f3aad68e7710e8c8c6991b64c. 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/GBMJG1616050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bc6527951bf2b9d622111499a4630510f8410bddfb4662a9c7999ac099b32d. 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/GBMJG1616051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8dd3617fbeada1097227081b7b6f9fcc08552aedf2d21c39c8937b32e1e069. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBMJG1616052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67275d56e669ce5f297d227a20b46e3514d2b9a324fb714a40fb95d855f9bc5e. 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/GBMJG1616058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a29f0794c3caff938a342f606661e91ea085b57acfe0e7e7cd4030c394b8c1. 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/GBMJG1616060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd69011dbe89c941f55a9593f6cd8944577aedcc19f27c2576fec35f09643aa7. 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/GBMJG1616061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1fc7bc9cec818c6743ae8764d3c07b4dec32979c984755bfa36251e29187a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES71G2421652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20ddcfb2eb1cba2900e43342ab1c11613f246821d0a889b6a87a336e4808c89. 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/ES71G2404577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50948e1ad8f448e825f9ac981b21d3544e6ce236a14d2c32fd9a5cab6f0bb7d. 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/ES71G2329239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8465b994ae9ea2b1797b8bd4f31867ab6fd1abed4334ab99cd2932267f03e994. 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/ES6041812405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c15c124dc532f7701e822f726cd2e26f426ede5001af1284452c76df6badbaf. 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/ES71G2332815.