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 0xf636e7aa9a8c8c74b314d61ae3a0fdd1b05b17624c54bb42ad6c4bd9fb7dd43a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0e27d3d-15c3-41d9-8570-35d8a03569a1.json and https://artists.proofprofile.net/proofs/artist/e0e27d3d-15c3-41d9-8570-35d8a03569a1.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 0x347956da24939e410b7148fee348ee262c71ff8e935894a6579c98a562e10516. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:11:00Z), 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/QZFZ22249775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e73575c203bd2107b2904baf6601d84c9b330572f13eedcb88388571fba288e. 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/QZN882204836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47b5d9539f5692af2f8364fc3cc2c080694f515b97397da1e764f9b68f14e50. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZTB52273474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3e63083fa9503840788d51c0f3cfdd953606412af606fa8cc30c49226e8925. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:58:18Z), 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/QZTB62368260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85820751c3b57f6f969416844b32340d1fcedf33f8d38d2ab8fde99619174c08. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:28:36Z), 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/QZWFM2323185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5b32f6b2551bbbe516740c3813c7446627eacf51e957360bcae338422d6a25. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZWFM2323188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fe16f268d4eae378743cfd0ad1dbd0504b6adce970fa076c7e786cd8f93c8b. 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/QZFZ32490708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dda04afe83914bc1fdb1db47cea4039cbe8e7106199c3f702bd1c88a6076d6e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZTB52428772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf724649afc17f42b034f17c0b58773b3c50cc2017455389b2c8a5410466cf726. 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/QZWFQ2460183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57a7bf029cc7603eab50c2a39ba814dc7a5ad693e3967313e5fb9eeb86b5ec5. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:42:42Z), 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/QZWFQ2460185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d6356084d3e6e067dde6934ee5ed09f95d8ee1248393e54ff82ab14c25ca58. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:30:04Z), 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/QZWFQ2460187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6852fd6aefbd48b490a0f1c5b0f211b734ae0c6b8f6dcb4f58b65e9c89b1d69. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZWFQ2460189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fe74e9fd6da6dbfad4896f4a747e9475195c93fef46525dd62be2f793bc0e6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZZ762487318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7849b7dffbe7662a83d19c6f58605da6dee040c4e1147cc8b08672c898f2f030. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZZ7M2425802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193c604f640c6677f1bac15c0439eb2948870d5464bf8d610902df2143b43c50. 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/QZZ7U2441444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be5726cb70c30268d7df7924fffbeaf6bc2587d583d53ea06f04751003267ab. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ32593838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8730e3ab4cb164d2318b942622b78d654e02f5dec3a599a59635bab6a4c068b. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZES52595396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fe75fc53e57cede4fda6689778dadf30f32a6e807cfb58fc44b85810b2c7a6. 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/QZHN32599376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ecb15145f36aee01f0da4000d7ab96f9267e6f5d4571539c76bae9742dd04b. 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/QZNWW2552619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fe14baf80369c0abab6ae96d060b9f12778efc7d2b91301ec12dfa976e4073. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:41:50Z), 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/QZTB52566373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6a7f1d7d0b558ec43e00c382cf24eb7ee729c11148655febb37f091259bbab. 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/QZTBC2535259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37227d44c7b51069a60ffe48e13dbd5660f0a5a57402b9a2d35c6c1de1d3b338. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZTBC2535260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071fa049acb529d4c899c3e84a5b3f35450396ca6a622218f3159882ea0df131. 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/QZTBC2535262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7959a00ac3187d85cbd38f1fd17bd1b3906dd506236f474434b11951b83e7d71. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTBC2535264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa194cdfe88fd5558d2bef0be26101e82269e11711e551e9126799aebd60cefa. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTBC2535267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f8c2271f21a401985455a2fc777ee7c2f84625dc38c5143921b0cfe3793015. 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/QZTBC2535268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6d6f4a33385db506c88a111a49935d6121c55802430b0c998899b35c120213. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:17Z), 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/QZTBC2535269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c7557f366531a807677885102e6765ae2bb4c4e0dc5e9cb726ef597206c603. 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/QZTBC2535270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf8ade43eaaad1dca983a61114208d68e2a06922ccf86770af1701c7bee1b1b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTBC2535271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda8ae9a88dc8bfa2366bed6ddaa49821c6b0646adc87b52549b81fa3bfdf055. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZZ7T2590753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a053e44c13ba00d8f6255ea419447055eb7b099e7ba99719b96c48670c33a2. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QT3EY2503045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d71fe1acc55fe30f295f9481561dd00e4c93a2ddfdb75b950d36341600a0fd8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3FB2522402.