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 0x497f89cf1f833aef0bb3f7548c12981b0bb0715a61a016c8655d7d123d63fe79. 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/e11470a9-e05c-4a7e-bec9-ff6fcb611f1b.json and https://artists.proofprofile.net/proofs/artist/e11470a9-e05c-4a7e-bec9-ff6fcb611f1b.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 0xfd108bf53b75b4f345ffcd31419e457dcf5cbfd88560fc942e5a6d0b4ee98ae8. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:30:40Z), 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/GX3HH2266734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1b2d94193f56344dd214a4e123ec46b260218fe8b92681bf5abd75c51f2277. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GX3HH2258476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100b25bd4a11943fab80e80b5cfc3bcf45ea9977648d94853619d6124b4c12e3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3HH2255552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78cb5be95621a442de2ad8a662709bcbd7740a198e1b67d50b9f704a56c006. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX3HH2267876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c71288c3f0447daf33a87304d0a140ba1963ea07abfc5445ffc7c82a8f26d6f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX4R52201651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94565e74be9bcf90884df7ced8742d57dccf22e26a1dc0c4b30f8ba5db71f74. 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/GX4R52201897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc7d132c9be26428c360c4a86b8e5d795f513cccd82f6b09ac4f03e2b1bd9ab. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX4R52204447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a881067ba1a0b0a62f0c650485a50db9d71a31443ee98f1ce7c65bf714b92d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX4R52204448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77da1ba693af3bc4990b52b3264d1b1226f715a30fdf2dacc0cdecbe76452f5. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GX4R52204449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420ea46c6dfc19f8f712e50cb2010a1ea1a5c88af4edcf2e2b1d312dd45d27b4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:15Z), 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/GX4R52204450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe9bf2665c97410ec57e09a89caad9c609850dd72da61abc1cffbc2312d9522. 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/GX4R52204454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099bad045584b5a76a38ec83708d805dd73353bca10e358dc348377b583a9c26. 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/GX4R52201389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f79633451b2b5e6a7578b7748ad165a21b95a2d01a6996160029eaf4b63e178. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/GX4R52201396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28623b4d287a0d1c3d468478529fdca446460ad7e3ad6508334674b19322d8aa. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX4R52201397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0577809a1394e5606fe4badaa48a4308be2ce2c25579501a093f5cb706cd68f6. 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/GX4R52201399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b323350b662777c53c765196169af02194775f0ea672883ff35c53d30b50d93. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:06:10Z), 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/GX4R52201401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3674aad3a48e47a4335a0e446a04cf74f0bcb2527005a1e779383a344b046103. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:53:43Z), 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/GX4R52201402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46feadcb24ba9a4b9373967053298b61bca70bb5da28926ad621aa9e24039cc3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:46:42Z), 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/GX4R52201275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f2ceb28d566bcb3ae1998e3456a9a1d7822515e680b66e5ed9873e5c8af026. 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/GX4R52201276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824bce5843342ab2b528ba6861f451ece44090a895a8e568705b55e0c999b712. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:07Z), 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/GX4R52201280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aac7c9a98dd173b1c8c0ffea614b764baaa46293c2815861fb34b0d501dbcbc. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:21:26Z), 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/GX4R52201283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6676b0309c72d1a2a830ccd4fae0194ee2ae244f3d4ad58b8135bd8c360087e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GX4R52201285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b6c7619d478455dd3cedaf9be2a9fa09c191757040a6c967555cda25f53d47. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX8KD2371506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3f0c965cb18e7f51f804ab5c4413bc232b9091771e4ae6517290873da50d27. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GX8LD2307274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeadd7cc6d40383f4fa5792af8eecd19f57f7888944a15aa96be329e95eaa48a. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:45:01Z), 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/GX38U2340228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58b5fe1d3c0dd5cbaed9b44f679f3745a2fd104f055bfa897974fe567712e89. 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/GX38U2371896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0af6b77e83542d17017d9d595f876fba3e147c0fd1777e06c7594174e12693d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:31:58Z), 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/GX3HH2334310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100283e90009f4d20e5cb78940440a9560500ad4f1954d4ac970acd17c174be4. 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/GX3HH2343143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1123c64a3212731361de77f41a36d4621abb35c8263d3abff1e3a7b7595904d. 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/GXBDS2399888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7371fe0ba0b6086f3aee259f9efaad3bbd6c1adacfa7a6358381d8cc1fe7dfd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX8KD2484288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77172aa385f70aae03fc2ad939ef6970c1fb1d41a323e63704a741d3aae7e33. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:25:53Z), 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/GX8KD2483824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c77e9b2182d34be06f92db2aaee8593fe0a84fb7093fd349e4df97087f98fd. 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/GX3HH2490716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd687d2e3e570afbc720810e630e39c09b65da089f7d853ee2fb1f3291096b71f. 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/GXBDT2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9924331570339c90fbe3060f9b5769b198b56fdfcac1c2a318860f1e117929eb. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GXBDT2455033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64709f87cf7ae4dd8d27c76ab9a14ccdbf4af507517ed0161bec372a2ba743c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXF972415041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd273408ed3c716132eb29dc04d8ed0f4e9eb1083a63ca93d265b8bdb70edf068. 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/GX8KD2581680.