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 0x6c037aa550fe0252af3fcae3a7ad1bd2dbe067a2443e5f17348afc161a313a35. 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/f24651d9-8f8c-4fc1-bf0d-dd84a18ffd8a.json and https://artists.proofprofile.net/proofs/artist/f24651d9-8f8c-4fc1-bf0d-dd84a18ffd8a.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 0x3a05be644ca4d70229ae2f155d1084d6ebbeebd2fb1ce4ef76c5850b8184b5a4. 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/USLD91735015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ed99e630ffb9785197affa06cdddb42be7d364f9de8e929a7f2befdc942500. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLD91737005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7489f781a2acf6f50c65cf68305b1861108be85d340ae6efc7c983675d9e4094. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLD91740694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f27ffc6a291b9309b4301375746b4e545f10d2a521dbde6fc22431a85846fa. 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/USA2P2249817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a950c89ca1825d764efe62ff708534baf5853f17b67780dbca50397503acb4. 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/USLD91741006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb746c3e30ce7a881407cf6883edf19dd8d79fc8aa22dce4e993b3d5c02056a1f. 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/USA2P2230386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67d81d4e8ac44343655cef73d8ce491c057edeae87c0bb2a781cd30e041717c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2249812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51fbfa240212b5594d3258faa2c0fe571a0228083f967a480cca354769dcdc9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLD91739825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964d0bdf0501d195a69cb22d7310f771e807e74d15793f961154159ba073f0ba. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P2249815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9d7a9196167703c5958939014f20d4af891ee67cd1ddf0adfed517fd3de0ab. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:36:15Z), 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/USA2P2249811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5818bdca1207484fef5c3197fa9955215a016907d012ca51f8ddca7b3370da8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USA2P2249816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d874fe529103bbffad358c05af1d0f3523a39e04def6ba765031a147b7f5673. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USA2P2249810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0064a8e699ac0ffbb57a0acf54e550f30d9f714d033006e22cf191c22700c89e. 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/USA2P2249808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f78bec439914704de33af1d812aa2f5fe24113b040092d72461bf7fe4047cc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLD91739516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7634c4e17d40004e060c8538b53daf3fbe2e88678f720db72ddff861f7d6c522. 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/USA2P2249813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245cfda5ed8e02145506913904c51a39ed0caec78404498e2ad899464e5ac312. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLD91735450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfbe4a68fa7cd825795bb3d763472bf04a4a0e6a25abb0a329b6ef7ae8ad386. 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/USLD91734141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a05be644ca4d70229ae2f155d1084d6ebbeebd2fb1ce4ef76c5850b8184b5a4. 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/USLD91735015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe8d13188e1f7c3054f1b4d4b62e21bfb335665b9345b3a721551107a4c59b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHNB2107089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7fbe76cde50e30ae39b4528a3c7a4602fa0a27bd09fbebcb781040613eab17. 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/USLD91735453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6de3e4ee419b3fb25f126536ccaf37ee66c7ea0881ce8a0ae265097c31fa75. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLD91735455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a302e313f448eeb5690222f2d5074f2becadbdc81d6e60b849f3aed806af08. 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/USLD91735456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f1abf969b750e2494fe47ca5a2ff70ae9c701d2f4135f159bfa3efd069c1f5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLD91733807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc1dabe193a5ff47f349bb7c1d0ad4aa20183c45ec66fc9aca5ebb3df8539ba. 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/USLD91735458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a3d16a666136cc73b500d15f1bb8e9b7de6e730bdfc6341d3833d7211d62ef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2251832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc82c76560c688104d220046a9a99703a971ded4af8e0b94c71fbb84cc17c38. 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/USA2P2308593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb746c3e30ce7a881407cf6883edf19dd8d79fc8aa22dce4e993b3d5c02056a1f. 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/USA2P2230386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51fbfa240212b5594d3258faa2c0fe571a0228083f967a480cca354769dcdc9. 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/USLD91739825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f78bec439914704de33af1d812aa2f5fe24113b040092d72461bf7fe4047cc. 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/USLD91739516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f78bec439914704de33af1d812aa2f5fe24113b040092d72461bf7fe4047cc. 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/USLD91739516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9033f29a8184c464a9c14b67447192f7949bc2990e23ec5c9f0f30b2c1f91e7. 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/USLD91739517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6672902d8b9761590ab83ae1f9e15353c41b1a563a6748f025207e5b65deff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLD91738374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ab51908e6e3843bbcda9da2598d4165ac3522dbdbf4d0f10e2c0709b4cdc8c. 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/USLD91737623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf48f9fb8f3d48da78c47794dca7a5f10afe0dd7c4f4c7f89e899fc8b7219a7. 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/USLD91737508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f03203463cbdf7883fe3c933506796686ab2f8a977153e88a4d0c72be7168b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USLD91737168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7deda8311e67d7cea82547356a17da6970d3544f0136196a8b5d0b1c6df1f6d. 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/USLD91736494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb44255a13ab2bacd8d3f96e66806250b407de4640c412c1dc96eb2cc86aec1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:57:26Z), 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/QZHN62122044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde07660793d2344c0945ab526d0e2b2669e13918114a59752988f5b86d43a16f. 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/QZHN62133614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82e17e7b6f290ee8bb7622172f68be9bbf5a93e95304cc291e6e644d6fe00d5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN42104925.