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 0x8aa80f573adf916ec013ffee0b07625b1af2c6602ccb94e20e0f206b8622534d. 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/b8cd6edc-6226-4eb4-a938-d3629635021f.json and https://artists.proofprofile.net/proofs/artist/b8cd6edc-6226-4eb4-a938-d3629635021f.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 0x820144bf79f314168f86eb399c827d202a247b7763cf222ffd049bc2e8f943c0. 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/USBMF9220572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177d4dc96f6c64eb4da45f5434946f4fb1498a31744b6f1c5a7df8f00ed76429. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:18:21Z), 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/USBMF9220574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eb57d7959a91ad0e074effe983547baae971e0c67c07b11e1e425a71def7d5. 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/USPUP0811350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3de256231c309c9e565c3525a1e9b49a4351aab4d89a5d718b7b7d6afc56e3e. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:52:48Z), 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/USJ3V0944288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a70b112ccd0034048698f3b6c72b57afc4eed0ea67543e51e0627d301811ca. 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/USJ3V0944289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa395c47b56b19310182ada91949dd640a3baf19e07d11a1c5ab0351114bf9a23. 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/USJ3V0944290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77ba53056d1d57f64a811daafb9fc2851b0d6a556fea3c8052732589d7ff705. 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/USPUP0811359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd3e3250f38c60b27acba9953df649da43203f20802d7ba7166ce6a27d6a93b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:14Z), 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/USPUP0811360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b504da553238fb759f04070d7d24badf30f3a338292fc8def1bb469a868260. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:52:53Z), 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/USPUP0811361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46384b02b04ff4f6cd904d029ec576053e6d503902dbc74c585aca8edd3ed64. 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/USPUP0811379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82d2fd5a72a935d8f731566c858f0e7fa3910883f5e4d3a753492611e79e2f0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:50:17Z), 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/USPUP0811365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9205a32960cb9d88f867cb679d52f7610abeb7e137ec6c045602f2732191f1b1. 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/QZZ662496851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9557acfc00c2142657ca5a92d56821667c0dd41ee0b27f690ebf850d149d287. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:52Z), 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/QZZ662496854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a03ed862c17812ff017025dab588ea0f31262f43180a92bb3a80dd8450c9d64. 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/QZZ662496858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1ecadf0ce4097391e4470b6ea5d807128c9504e28cc5d81fd8f406b4080320. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZZ662496039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6277e52ede071f6ee4d0d8617bb439638d3d86c343f56ea22508e71ae48a8a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCACM1692398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd2ee16f171a175e67327d5940aa3445df1f84370804bb6c76cf4cb72e3b8ee. 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/TCACM1692559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84e1bed17955f0811f21cc28b63d88bc0d1df9c64c605457cbbe53d423f8ab1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCACM1693463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986d878964462e4eaa566f809b7f76ef333f3b9dcae4d5baee9565782cbc2e7f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:11:26Z), 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/TCAEP2061595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a86532568dae93561faa7cd867d8b3ddac8809717e3672d8c67f725599e92f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT65Z2534592.