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 0x1cf7ad0f3a10c19c989059b072038e461fb04a61190446f19f353f1a55a7926c. 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/b9c5c8bc-5ce7-4f5e-8e1b-ed32ca501f5f.json and https://artists.proofprofile.net/proofs/artist/b9c5c8bc-5ce7-4f5e-8e1b-ed32ca501f5f.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 0x355001ef5f8d8a0557ab2ba6255447f0acfa87b2a9e311c41297c75ddf7bfdf0. 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/QM6MZ2230983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21231c88efd66cc4ff475d375735a7a4de51f158e626da0ed5a533f68b4bb7be. 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/QM4TX2331266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8b2390d96f79af425b9c742a0750a69fa64ea4529d8e51ae66ef4ae8449cca. 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/USDXS2202700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87cf103dd381bcc3080d969b409ce5b505b82798a6fa5768ad0e0f16ff6a585. 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/QM6N22093911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eee7a3e90d3a835411a20b11e8b8234af9c6b672df69ec5c20ac3fddda80c25. 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/QM4TW2005941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26efd939713c45f9520216c4a4c5202c3b30493e4bad1b7e1e640cb4c3e0b1bc. 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/QMFMF2323404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d559f19b21b68e9af5b4bab3052c53a06cc83c78ab87fef244d4a018882f18. 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/QMBZ92381087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9ea0858603a22bc6a9173178f4a40da1514d5060892fff20c297e2c1120c55. 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/USDXS2302180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb682fd4df323ebf3b0281011f38628f1235c80cb93aad72bb7a3873a48138226. 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/QM6MZ2391084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f60c71553704ba1bc6930f568f36ce058b65aa0f75be3b1fcd392faa0d4e410. 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/QMFME2275535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598f55e9d12afaaf51d253a715792081c7ef7fc22817d331a65d57a749a97345. 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/QMBZ92261560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c95b33904e4831884b5369a683ad7400c18c101fcc99f2be6bdd0560a2a9fe4. 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/QM4TW2257581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5467e71c1b2ca51e760812cef1b9abfeebc64ad8b581515002b3905d120b9a64. 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/QMDA62139030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9398b21f1826979ece662bebacde9d1b6cc1ac76ac4726197bb5fe1ce6e762b8. 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/QZS642169887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582865e04c2d7c279b356c759687733989c1bf3d408b99d49c21b349102a1cbd. 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/QMFME2194464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01afdccbc93fd45d36c2b834b512fc1b1e9b4b0e28bdee2a1a5482c5199cf46. 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/QMFME2192928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c890346936f28d85d9f4fee92920cd4aa7993d392d1fa99e77f530805fa6eaf. 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/QMFME2134724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c94b8d25e19836baaacdcdfb66725a8a44ef53fa12d56984f8d375ec046b7ea. 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/QM6MZ2189176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cf0eab912c53613c14f23a8fbd810a1f7919789363eb8bfa8f07b2e65e4005. 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/QMBZ92092371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bb9102a8ecc58000d8507b4bf5917cb1a078f4782372cbf61e090f8425ec5c. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QM6MZ2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5638441bfc8af21a1d0ceb1982d7c3a6cdda881e92928ee19afa845dcabc2c. 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/QM7282026610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b73be6b8163eb235a5cdb564a228ead1021b578080f146a0b88c8637ca31c8a. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:33:28Z), 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/QM7282026594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bb9102a8ecc58000d8507b4bf5917cb1a078f4782372cbf61e090f8425ec5c. 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/QM6MZ2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21b2f02a94c58ab4742a3fad87c27c735631b2938ca7d5271245488e37ba24e. 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/QM4TW2086054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e1939c9fc610e4139f99df23c39d42669ea8612d35375f615ecbd013b28c44. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM6P41973349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6669d57308b1a68133d0e48c63fcddf22b06a2210be56a21bd69548588939576. 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/QM6N21966736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd077d73ca7e4441e6602b391a989a646d21ef69351979e787394fd0b1eb70cdb. 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/QM4TX1947042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689a0562f2ccede3fbc3eb868ae7e22738e66593d7eff28c7cbad4bba4d45502. 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/QM4TX1904911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59da907497f10594f99e7fb3a2ca5379c1315557f0dcc3ec2ace37713bc0aacb. 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/QM4TW1916447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6581502199fb5d9abebba11e7349ae071b63a2e57ca12f29f4dfe64e078fd705. 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/QM6P41834536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d59d2f00beab3ae079ea9b6e91590391ef2fd98bd5455a188d9d953c93cb2c. 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/QM6MZ1872172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba939c1eb6f6347264fb63fa36f26433518669447b0597657476cf03ee8be9d6. 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/QM6N22471487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75953bbafcea0c24d88a1d4e66b3c4776e72ed2963a6652d086d3ec840b11d69. 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/QZMBZ2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00345b5620aab211a9c0069d312d19c39d8427723912d3a91b86024fc30da70d. 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/QM7281941823.