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 0x2f68fe14049b59a5649d39a9ccc9cbf6509d8489de2f37779420edc7a5cccd6c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d145621f-3496-42db-b81b-5a2845fc8634.json and https://artists.proofprofile.net/proofs/artist/d145621f-3496-42db-b81b-5a2845fc8634.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 0x58e6fc2fcd5f84232d34fee2560fcbfa9a9053434a34f4bc2fb27b3c5dd731b7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRY510781278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0ce32e64f88936f9901ede46320948f64450784af7b65056770213eb4831ea. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/FRY510781286.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9714c3b18a41f058fecf6cf0c66dfa0f2a338796144856a5a4f7e93fc63de39. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:29:49Z), 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/FRY510988741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3655d4eaa0cfd5b4d8ba25f0e9563a7515db8edcf98125538572d9f334545424. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:01Z), 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/FRY510988752.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ef1c85ae894688bbe9fa109b66faf580090d34d54b4782774709ffaa17b5ed. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FRY510881955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d7e31d73f59a61037d69cbe187d0170a8439062aba742f27a32357981452f1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:41:43Z), 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/FR0W61872086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d0c0411cb660e22ac85cec10ed9876d99051c908c0020f232577c7f6b7c847. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:31:45Z), 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/FR0W61872087.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850082763b54bf25bb62a32a494e6fed79117ea21a6e74684f6ef41b0a87428c. 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/QMVRR1203589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1d08a114b4d53283679dd875d40898a66f6220df0058f1842c04f1dd80a084. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CAM460403050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1186235fdaecdd049f6f1a908fe5f7fff812a6c03cdc2f0eff347b3e41fbc844. 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/CAM460402862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98507c508ed1b689b0a2d637a4b9b838d64acf7dd17a75deeaa11198e2d20767. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/CAM460901739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854909c9014a7a87a96258155745418f02c62e69156d4415be6fedd3c517c9c3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAM460900427.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f037ec3c5b66bc1ad25b05564fdc4a532a07113c1be827d680b1fe4309afc2f. 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/FR0W62293221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74aaaefa35ee2d36207403aee5cf81e18eadd47e9ed589e3da0719c2c5048822. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRY510781270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21dffba81e4826d251fee46624c0a0238aa943c15bf83b6ebbdcf2192b58e45. 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/FR0W62293223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1741be645c8886a82d9831e49d86a4b80c4ad0839aa22c390a015d0a6e39ccae. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR0W62293224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22ae1e18fcdc197b202fecbb570e0ba4f31963bcb46a02706ae40b5eb4de9da. 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/FRY510882006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed775b77bbf123232c6f54f4935ea84d0b69dc5405be6729916343753c2caaeb. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/FR0W62293226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de6ba2814c20055e069b56fbb9674ad4ab34ef6c72ee83e6dd8bc4a3c751a84. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:02:40Z), 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/FR0W62293227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693fe0daf5b34e83f0a69f968caf11094ac57f3080c1ed95c79c815793fd4991. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FR0W62293228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d7b18126b9691de65e371255ec6aea62efc2cb2c1b4a3e1453f7c05e9cdf4f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:42:03Z), 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/FR0W62293229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31495b1e932e7ffb42cad5281df9beb677dbf57045628cc185de3c4ef0eb392c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR0W62293230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961a35cba2502d8345342c46e34ed4e4f8bc5a7558f53d8ee329d471d59204b9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR0W62293231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef77f8619014aff3c1b49f9e1070e048fd62b38e4eed0709e5cdba611ddb17eb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR0W62293232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798fe5f22018315a7e8f9665df92956ce90a08fbebaa1a8ff8e17fbfa875ce30. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:03Z), 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/FR0W62293233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9f7421ffa707038f98673dae89111a285a780d67b1363d4faae1be73c6efac. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FR0W62293234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f7bd0440058da7c272e4cbe7811e473862f8d2cb3a3074407bd85072a3c0f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR0W62293235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e2bea1b38e3ea6a0056d2994995f4dada2f803d209efac623de198b7fb4f02. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FRY510989693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3679bf614fce369cb9f41fd427c0b961d33e79de3d0c168e9508f4814e05d6d1. 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/FR0W62293237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21385a9c9a6b0a2fa25bd2a48b2bbde86ff470e889ab8d7ba7be9ca13d112c76. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR0W62293238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b29761f88ebedd48aee3e701427f620b93f2a2ed9e82b31eda4f476db98e078. 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/FR0W62293240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb407e60e5fae6d7431aef9704dd1fe7d6841c73368df8652f4147eeed5d09cc0. 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/FR0W62293241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7425d0a14c6190c088abf1dfef2e9600c1f8a430c0e9edf540a90a5043410a0a. 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/FR0W62293244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708c6215c825670d5c21c0240485f2ea78c7015961407ac345ca7d2baa2b55d9. 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/FR0W62293246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbd4fcdf2f609707c9b97ebaba5e93993ed8a941415abf718ce024e23c894ea. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:58Z), 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/FR0W62293247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7985b0826b825454880536c68a8cd3f4e1f2bd24bd70a8c24629c9f2542f8e6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:15:00Z), 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/FR0W62293248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d27af58c4eacb1d59950adbc5572f295274ee11cc6f31703c0cd04d00e3523. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR0W62293250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ffbcfbeb4e8adf2d78bfdc32d3b76d32d99364bc57eb8bffdc492f423b5b61. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FR0W62293251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcadaca54618d6d37532f5feaebdc729a5e770f352a0c10838acc4cd2a1bcdc6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:59:06Z), 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/FR0W62293253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7f1c9b1321fc3e869ed2982d5e849778cc22fb7c0db668d5fdbc3ce3611b28. 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/FRY510989690.