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 0x734b3f5036b638a15a48dc5e7e1cee3d09b85b18d6f2f448a6b9318bd5103e6e. 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/04a04878-22b2-46f0-a67f-548d798522d8.json and https://artists.proofprofile.net/proofs/artist/04a04878-22b2-46f0-a67f-548d798522d8.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 0x14611163764ff8d1d7bb7f66937364bcbf13ff9f011889f29d87e2e11b411916. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:15:16Z), 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/GBLV62138176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e61de2cf2c9ff23ed85c019179192bbc0971b6514216deba7b6a74b1e0b22b7. 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/GBLV62138177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e415ada168b2250763d1cce26ab4188e04c2d059db4234f9a627c235d023bf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:11Z), 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/GBLV62138178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9056eeca913a22036c5d4d02ac31df8e3ca51ce6b77ca10ed0742ef035bd41. 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/GBLV62138179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6c443d68bc4b7bfd1e3111685c98734a211d6f46c79aa519d7975481a69a70. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:50:31Z), 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/GBLV62138180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bc3cc0a34163dc7eea05958f084b11b817c58501f82914803f048f54fdf3df. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBLV62138181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b12fbf2fb92a39c8cbd724b8d86964c774de75ae9d6fe2b744ce9d9df2a1d7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBLV62138182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d01616ade18a394997a583dd10dfd70e660a7101db0d21fa911ccd7a0f0fc2. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GBLV62138183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2c095c8933cf01cd7d1225b5e63a3ab17721c714cfc41a189bd182925488d8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBLV62138184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec29dd988d519f8e8fecca3e809374042431e238efcd86a3001c79605d008cb5. 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/GBLV62138185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42765802ed4f70cb81082914f58cf5ff490ca5a618453524b432571cd38b072d. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBLV62138186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524f43983684797dbb69d005ce7709a8d3c79b49b47c6078341037329ff934ef. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBLV62138187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303971a7292cffc0d76f8f3ab248e65818b1259377f1d348044b0070843339b0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:10:02Z), 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/GBLV62138188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3d3043ebb92620923cdd5b307db52220390d6db80ad302c43aa192c64be29d. 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/GBLV62138189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7973371dbe299d6dc810dd1fcd2aaa70c6bf0769a9cd33200afe5a018156ca5b. 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/GBLV62138191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6236154057a3940d7c678f724a851d3d789b459083dc71ebfd0b94cb4ba81a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLV62138192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d5a07436bda57bc99d1f6f22fc8c62c6c3481658527936eacd72974ddd2a5f. 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/GBKQU2268106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7439b2c48d95badbaa220f18a184cb6602e51dffa95383a7b5069f69a3ba98d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:45:09Z), 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/GBKQU2269851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c3326c1b6be4290e81463db4f3752fa0d2e12f44a4ca7be96f6a55e1d7199c. 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/GBKQU2269852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab67f6b407061452d2aa69bddf4efb15e1ba69c4de6076206b87fbe307da12a. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GBKQU2269854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519cc8ae0a3b6a2ed22000a3838e51200c6504329c1ec5f4564de30ace33f106. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBKQU2394618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07aca73d33de907886d043743b4e37ed830e10af418dc03c7b26574f2dcb350f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBKQU2394620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21fd980b5e00716014d387c996fe7e0279ae174a74edd4c771b693103c8da51. 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/GBKQU2394621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889b211d05d795eebbefa50bdf639818c9d5c6f56176bd898a8c5cb9f7f95c86. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GBKQU2394622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8add15aeddec1f0572753713f7de4e507228dea348bcfa018442e16af6f780. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBKQU2394623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eef40dcab6c35b2a5d584eafbf56d3783539a40e5bede968604432fc6f30d7e. 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/GBKQU2394624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191797e7f044ea75b7fdf4ca112dfb68fd9cd69238c935e862118cbd0907f454. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/GBKQU2394625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba9ee7650e874cab52ec55e19206d86e7fb794e0e35fd63ed689a4dd19fef36. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBKQU2394626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff154474ae40a1f481317b1c8508e400f672ab7e9b013721b76373e955678ac5. 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/GBKQU2394627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec45e1160b3f3279be865e6b5264e76e53b37147e53e1b05210294e3cb7c91c. 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/GBKQU2394628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cddcbf128c07147ee1136a148af1a7da02d8d1f4fb6e963f23611f6476ccf7c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBKQU2394629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e40fa58402060e517cd6fc705ad8880c2796a7f7189bc04b3f5f84249bd111e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKQU2394630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f53791a11bcc0756148c533c1d6834ad40d3ad9c0af9719e2324014c28e2be0. 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/GBKQU2394631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14893e091a932e37d194567ab1ab98024e4b9059fb8fb98cb418c5999f51045e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:48:27Z), 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/GBKQU2394632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed89b2359470dadca8779081f5197bf588212303027030700f8a5e4146a65fc0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBKQU2394633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b8868238b0b4cfa4e09bd29305d4d97bb0fc6882b4af1ac2085b09ee514fa8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBKQU2394634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1d0bb34640f778a2127c72cdeffd1bc66edde1be942803e8ec8606c1d1440a. 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/GBKQU2394635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddc0f75ce76e09da182c3a1c24445cd6aee84724217801dd3e65b8458259323. 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/GBKQU2394636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad54d475344b1bc42e93fd0f2acd1dba3283e0ab5671c9c7ed0575e1509fba6. 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/GBKQU2394638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b7216579c726b21b052bc0ca04813c3d12c8cd37c954b7bbbbac12e213e924. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBKQU2394639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f945aa7d29c8361de388fd40787aa4fa375935fcb720b6c4130b5da33cc9bb. 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/GBKQU2394640.