1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe8bacee4f9261f90adcc4b150e467fe2ce7d9fdcd3e6d32ce4871fc14b44eca2. 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/4b3532bb-be23-4d1f-b335-daa545389c0f.json and https://artists.proofprofile.net/proofs/artist/4b3532bb-be23-4d1f-b335-daa545389c0f.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 → block OTSBitcoinBlock must exist at that height 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 0xa4e5766408ca7b5e0e01d15898b8ed02979ad9a24d141fbf102ed679a768abb0. 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/QM7282403080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb687edc94c29690978d02d2c3a3c6e95a83ae6bca5c1b1dc91ee2f25a9561e41. 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/QZTB42407307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4d73db36091e8f8116282daab45a14adc435d601b9525b137134b1492767f9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:40:37Z), 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/QZTB42447894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000278b95821b9f019b7e3e574f64f72ea195db7c44b829be14d31a15ece75da. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTB42447891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd501d85317c6774e36a15dc5a7b20475f6fd998a03fd81c595bd4e143e1a4b23. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:42:21Z), 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/QZWFM2475327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2632ef9a42b182b8cb0d411df0f42054d93e01e6b1480279ea2ba67493451f30. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZWFM2496110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8997aa71c512720b8e8b2d122f42d93f14e4690b0e971326ca0762ef2ceda2. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZWFM2494315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa209cb699bc949879da649f2a68919973dac19a0830c84a8a99da597df0821ac. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZWFN2429514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3003c16035fa3fea7875e5e1f65aa6d40b4ac8efa06575c56b735576f9fc89. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:42:30Z), 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/QZWFM2496157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acb5a199df584a0138c6e1af9dd468a94f755535e0036d2f229eaeba7dc7014. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZWFN2425754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ae876ff9ec2091b60ebd505e788218b03b8e330309e1fbf8b920ec658dc155. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFQ2409331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc991f667512f014cb849f085d6185513b4d80e5390581ad969d6073494fb2719. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFQ2409336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea8c9fc6049d70a53692710e7267809b1ea9a0bb8913ccd248191eaa2bf9b4. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZWFQ2409338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a230ce83c9d1b3f9376fabd3b803033e476e09562a913150aebb087fd71868. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZWFQ2409341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dccc3e61945dea0f8b500515cb9ee3427d32c5bd8393845e6bb2f152525ec2. 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/QZWFQ2409340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29677ba27b66654de686c6bcb5e70b0d7a5b9eed46e3187e046fc02df207a4f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFQ2409352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2599352c55a79aa70238a1e092fca749007a87faa0dc5711a05640d0ea14459. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:45:36Z), 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/QZWFQ2409350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde355d4a3391fa78b3d08ca8622aa19d7f8ec06c5c85b73fc24329c01e9d471. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZWFQ2409355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26f238cfb7309d68e94f778fd2651d44bc9d75985eb2f47cfbe83ef243d3f3e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZWFQ2409348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebb00629b6aabff0d202a532b4475cbf85f683e4248335fc53d4b1fd593be40. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZWFT2437214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fc934513558894c26062e2d0baba5cf940d2272becf4482622708a6db585e4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFT2441515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11d8d551bc49f2f3130629af259b1bae8b8bd0a989c857fc9b57f4ce2571d47. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZWFT2441531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff5bbc786662d4bf8ad142a449ea7f89385944952b7cf33de7b215364ef74ba. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZWFT2441542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4392a584a53e8644403e00fce520f9ae96ae8091f416857b2ab5a75bacb717. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZZ7K2402418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229f21005ebfd7adfeefb3aef9995b0738abe49c542ea366aa8834771278ffd2. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZZ7K2404722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e8ef8de907565906db8565865049c09c04115fc483517dad17a7086f0c0659. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZZ7K2407444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabe0721b4ed640b1484f2694260121ac9c05015ca7d683ec14980c503e2ae56. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZZ7K2404729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7c0e192159960089717905e171aaab15cfa69c26290a57d3c8ebb8509c307e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7K2408592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b3535c9864df42eee5a9bffb93c92c794dfa350d91b74424d068c5acc242ea. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZZ7K2408599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376a408128366bc694539050fac93366fcb36374780decd4e96b4aaedf10de94. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZZ7K2409408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10c3c081df57b68a5c076afdcd0b671ac10136d4974dfdc063b1d0631cbed13. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:43:49Z), 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/QZZ7K2409411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e29bdb020b0d0f4a5a1873f2b77699e9aaed98c749bed0ad88f65e21ec530b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZZ7L2471672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce79a840f0354281bc8ffe546def14e37d01f789667d12f98a72b0be1d33865a. 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/QZZ7L2470513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaef98448d402d8ecf1e4bb816c40ebccefc494f6a9d30dd18ce37d44b5c0f97. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZZ7M2410326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2a29b40fd3f1c8b8dca723525993be483d169e99a702110300fb9ca7bc37e4. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZZ7L2472431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d2a57e87f557fa2ad3fb03bf6df0165e6d3db408a0cc05eef057f503c26ee7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7L2471670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54271e191c925d1c60844f5a43f2d234e061bda22fae3355448fd037ab11c89. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7L2473207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb799adc1a0ed3ac8c6ea204a2d0c38d5f2e80e8b146b6bd4cde37949d97e3755. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZZ7L2473206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c415969d8375b6bee3f54e2c5af9453fffd8f8a7f2db0836a06c814dd5b8b80. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:52:04Z), 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/QZZ7L2473208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ccc18702d7f5900b42bfa30d9007ddc48069e716b0f82360400b4bdbd2ebba. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ7L2473209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ec3e47c62adb980169a76df1d14295d74a4944ba918914ef621edd727e8d41. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZZ7L2473217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c68913a4c1eac701d5a06ca414052e91a3067a5abeb1fcb4a6ed21390bad83. 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/QZZ7L2473210.