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 0x3f82c29c3bce08e9fdd7f3f6ef560efbe3b129a7bac2774e66dbd9e9941ad772. 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/be07ba97-32d3-4f51-a684-31f721ea3008.json and https://artists.proofprofile.net/proofs/artist/be07ba97-32d3-4f51-a684-31f721ea3008.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 0x33d7dabaf46959b961ab41a199aa7933cd067362b3a2ee74dc25c3ab7181734c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:43:28Z), 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/US3DF2400964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bb493f1127eb6abf707129bf8ee8c81aa0d0a883f120d3d6eb8b94827038c9. 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/US3DF2400965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252ea45533b80f4d3e0823910064851578848cff611d165eab6830847d778bae. 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/US3DF2400966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d7ae8fb9e7aad8172e43894bcc9cb4df459de137ffd7e5fb2649c5abd75c89. 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/US3DF2400970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6926124ff01f7548f0915f5eb497a181a3b88ff48482fe765e296e2b40c9e2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:04Z), 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/US3DF2433378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc606208400c6081eb0dd4ddaa06182056cd6249f3b3d1a8c9866cfaf2b974b8b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:39Z), 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/US3DF2433370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cc26ad0ea248345a68d92b540ba2118bf73404458a0d20f7080998d5585a67. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:00:56Z), 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/US3DF2433371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1575f556b3629f69bdc8cc32cb0ab7e090539ae5faeed279e072a1719e351bfe. 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/US3DF2433372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9d36a20173f5ebea43a9209cc1d072df39905a088b85172aa4508be3a007e9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US3DF2433373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272b060800c9cae1b3d45e05a49c7bae31c49d700cca2f58636c42760d844a09. 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/US3DF2433374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee39b129faafe269eca4de80bd7deb416c697b061bb8fb7eb9e021f5645db1a. 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/US3DF2433375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7306786069f16da6a56c348a17b0dd834293fcbbf24c54532734eafb401e0ceb. 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/US3DF2433376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9b054b3045a19e222f1bf32e8b0c5b9d1865ecda7588f9b61a545db909aed4. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:22:09Z), 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/US3DF2433377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20521cc492cdbdbdfdf0262cf769ea43dc7aa795185afb9cf6207bc95cd68aa8. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/US3DF2433379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d60be29098abdab82aa994fdb41380b41ce70fdeffd127e4495070cd312e5a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/US3DF2433387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3979d51a2fd69209ad704d71cb8dcb42b81b7b57b82b60af92a7c97e94376815. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US3DF2433380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db29a087ffe290b31bdb71932cef6aae25dbf0b432ba7c3b7cad00b1471022c. 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/US3DF2433381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e9e2cf7fade428614279de47f495489f0dac7ada0006f2a3d4b73cc948f961. 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/US3DF2433382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd757c78ff20d535397d97a4ae3d14af2032438912395e8d63a3156b0debd1d3b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US3DF2433383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2469c5f1d65eab8a55e969a78cf63030c1c572b334d0e73d61cb41e8cec0a5af. 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/US3DF2433384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70d601554343b5eecb524cd30d5b132be49ce644c3c1d6c6e18b6f385438c0d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3DF2433385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01844a578979e23e0e1e3ececedd0f42f11bd10b428f6a969c05e7f604fd2c1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:40:32Z), 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/US3DF2433386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db32a78f63a5a044047ab09f0d1e39ae72ef935a2666b582cf9f227023aa9df. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:29Z), 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/US3DF2433388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7166c51952ff94ccf4cb1990df192e7f199d4a6dbe0791e9c3186bf8e9482159. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US3DF2433389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd027e991d1c0e335f4c5f177f36acdcda4fcc2c2f488c6df8c702caed9136d64. 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/US3DF2450325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb717873e043c71bf3458292e0282d56ddf5972bd9c1c497d85092b6021b72cba. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/US3DF2450326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53051485b2d38514e06faa40c727b1de3b3febe227270560ce18920362e040de. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:02:23Z), 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/US3DF2450327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789eac16376ddc4093854dadd7ac0e3e1ebd9ca6c4a6d6521a38e819b3d0ff08. 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/US3DF2450328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527df29ac7c9f096e76095e322ccace77f7d1950589546b3b493a9ffc8f8304e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/US3DF2450330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8812f3fd9c123424e34fe4029a64dd4fe6240134eacc44a9673c22aa9127cc1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2450331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60cd504b93555a0fe61d411a3fa935df38ba1416a3d5cde9f4da2e19ca79e2a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US3DF2450332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878f459e630d531d6aa0749f4cd7fe59b466ec7ff30ce3f7b2f5fb72decdc817. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US3DF2450333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d22ea89ef38bc7ce2ca91b65b7c73b539224730505d09a73345b31344314249. 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/US3DF2450334.