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 0xdd86eadf9c269f5b15bb341035ef9186654101c041a27c8817bf326e6aba40a7. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a345448-2fea-4af3-8528-9b09b437b496.json and https://artists.proofprofile.net/proofs/artist/5a345448-2fea-4af3-8528-9b09b437b496.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 0x8667ab44190c5e7c4a32707bf70ec70004b86e01043b8a9fc849633417f66fa7. 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/USHM91600096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3114b9f0482ddcf9ac11e1b2863e73a9b210a3b71ac24ce4ee8535cc552e0e00. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM91600097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18f377d541f24837708e36d11f349ec06cac3e609f174767eb4bd1b74f54029. 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/USHM91600098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24f030153f5b344dcc1f31a2e719ee2ad1a56a106379d5ff678ba295692e5d6. 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/USHM91600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa55870a795fc1cbf14e2627d1179ff8cb785985ea3ff1ac03cb2ce1f18383f7. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/USHM91600099.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dda553ef3a892bfa713dbbc7a4ad0fffcb7d9fcc5629b12d2bc9ae33395c93b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USHM91600100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafe1b4abcc9f10d3444a5f78e7305bd8605b8003027925be74e7ba65f9cf4fc. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USHM91600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b4beb91cedaf08b3e8532207ab7103d58a750cdbeab39956c8a6d39912317c. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USHM91600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abceb8ee1752580b0e3c48b0405d307e0e4be14fd3eb6198620700387709e1b. 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/GXBDT2485806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe674f330f1a8985670a9a6921096537a5065d4d5386be646e92100cc14d1b995. 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/GXBDT2488557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d18ee00c742cd378cbbf9454b507d3a8adf9e8b133e8b8162ea6e1f6785772a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GXBDT2460319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcea5cd1f1c89c5cb21bb058d06e07659ab731668fadacde636a260a967b119. 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/GXBDT2498534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831ec7b15ffa50e03f03fc9ef3f6195981154490a543d069688f74b4e196fbf8. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/GXBDT2438385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb73b7f39c70a98abf53d1d288cb2319e9c70a5003c5fc8cd8c94ed210eed08. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GXBDT2417198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465f0410d7f6fa376e532965aa545cb7694390d49386e7e96a862e89a465d6bb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GXBDT2448684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dc4a9981d4542b8cbdea0025d20e3ce0dac1e99175d4fd4c26ae114b749064. 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/GXBDT2423057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d2cf035a734c94b5640515a0b5c0fd8dba8a7018d4fa9c68e0b1ea8631fe89. 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/GXBDT2407487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3725022eabea805a630b251d0014347d34be65f01e6a7c0205c1371d173731d5. 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/GXBDT2446417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a0088c856616d7d99f03d0a3fc96b99fcd7d32dfaef38c6f46e79e6f5d8cdc. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GXBDT2448736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40438f664f55079b5f17596adc3be9b2a60d159c3efbc809425baa5ee2d52030. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GXBDT2404188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe1f7c34c90d36b22ca5f9ab90c489a726fd99520762228670e45a50661038a. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GXBDT2482473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825a04fcc1a8aeb08254406b0546bbd4dea7ed973c0c99d06e45a9b1f39c1d2c. 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/GXBDT2418631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d2f22269cc4f6b1d5a42f3c3d75d43715bb0fdeb3f1984ed6354c65a42dcbe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GXBDT2491287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515853918e1556e95f0d376edbabf87f6756762a02112130d2531445f5b4e399. 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/GXBDT2475074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4852e55617afecc16028066928989d0aba4cee541796a9c07a58531ed6d487b9. 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/GXBDT2472248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447c9a93f4559757e581372b72808192d8bde129fd4d9608fa09196fe2f2bc9b. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GXBDT2426545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1153e8e267d557af84877463875d5acf1e416d3378f3388fd738c02a222c820. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GXBDT2483666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2571f930a070c640076cd08145a0214d12415f74d79fb6cab24c6b1b6cf2a4c1. 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/QZWDW2500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5aeb8fec6b073cf7e83e7bdf0239239dea8f8fa813e25c63ae3bacfeca4ec6. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/QZWDW2500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3694ff584a7099f6816ce3656d093836c4352501f0de790cca191cae0132f08f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZWDW2500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072765af7826459927b152b56061a3aa759272394f8d600e68ee16fac71ba631. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZWDW2500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01041221624dc1d022046a33a8f5b3dde6be4447215997732aa4574d3a17863f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZWDW2500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67425071103471fd4ad2ee62be7a310a1b9a5d0b7c51539d369563527957db42. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QZWDW2500219.