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 0x5c458b1e1a4270328c1558aece1d3236dc8df1c6322c6258777f60c07ebe8561. 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/49968a4e-126e-4df1-9d2b-0f0125358546.json and https://artists.proofprofile.net/proofs/artist/49968a4e-126e-4df1-9d2b-0f0125358546.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 0x394ad8e0a8d0b09bbc5dd7f03005941f546fe52d1d22c9f976828327ed8ccbfd. 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/GBGLW2200557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67633ee13a14b084a5802d159751810ce9bc0627bcf41fbcc8c34ce21a97a9d. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBGLW2200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54810fbea149529e8c3d2886809ef9912314a87f709c744cf324ca32a6587146. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DECY52301444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206973a4c80c72235784685ecd942b57e0aad2115ccd0754560e3679661704c5. 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/DECY52301445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9375d93e1c9be39f2622eb48ed2a81928289e887ee44d7c8ed617630eb0ee5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DECY52301446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14828dad758f5699400b9f1662619407747bf77ba104857f39d476e5a97d4bd7. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:46:22Z), 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/DECY52301447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352876a660303e2a236258070620df9609f4f0d1e97ad001e1dbb1d148ec34da. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DECY52301448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7941775b0e7ab5b81cc1b4c68c05ed431df63c825c80aec44758b5b9d0ded654. 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/DECY52301449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453ebde402f49e64767b40f85828777b44fab1e5a4e899fa50d69c69b2a7d325. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:32Z), 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/DECY52301450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8784680c4b94153b50830411115db6fc347b6397626f9a85f959e81ab621db0. 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/DECY52301451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930a22b2bb8bdc6785f9c8087f2c1d134ebd36dc424de7066517ed9084086a5a. 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/DECY52400823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d20454ec3d1e415a01d81666c3a63912d0fb8343833fec1e1587f3c0bfda88. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:08Z), 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/DECY52400824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46017d83428786d5a8e99c4f0be1af49f647b8452ffd7494b9de56ae068dc7ba. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DECY52400825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deebb1ad4611b2b3f4cbe31ecfc2b11c7b78203e158bc33c380f7202252f1d2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DECY52400826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4438e13d7542a5e0eef4093246928adcf4d0eabc2a4f82d74d11229ae0980d3f. 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/DECY52400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf8b23e57612541d0f461d4cbaf1bc1e45771ed1ff70a6f7833bf6b3f70d60d. 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/DECY52400828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b33f24a5ce84c4ba53410cd3729fea9dbc9b9429ba3a3021d0aad726ee50c6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DECY52400829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620acb6a27c0edd37bc727d3c6c97f58d85a164d3bed05923d4c04904e2f0eac. 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/DECY52400830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62db54d5e4ea6a79f05f87b24d41e6ed5fabf2dfbf0f0297326056ec5f922de5. 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/NL8RL2435248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6beacda1ac1f58fb7fed14e0c450145d1dca116beb0dc1bf6aaaccd450b130. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:54:52Z), 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/NL8RL2435249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5601bcb7e9afef9d41915066d4d0845840807644b9866b035ce669d64675971. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/NL8RL2435250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd67c809931eced66a059e1999ca5041209ceafbc4e41656f131fa7f02b3ab4. 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/NL8RL2435251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0234d4a3ad03402b82e20bbdc2f443e925082ff09f23c9a13fff93da9fdc6e35. 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/NL8RL2435252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8094f2cf6426ba6539abd1f7dbadadb9c4f526988827c065c05033aa6290b54e. Chain 2 (Bitcoin): anchored in block 957842 (2026-07-13T10:08:30Z), 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/NL8RL2435253.