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 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 0x4ac0c100e989e03c726611f02379055a9d3e4dcdc43bbf2710b092c575e1a3dc. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9254284a-0c1c-4503-a932-8dfc7683f208.json and https://artists.proofprofile.net/proofs/artist/9254284a-0c1c-4503-a932-8dfc7683f208.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 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 0xe31f91fdd490bf994e516f8e7e0151bbcbc152f0f209eb4bb3df19f67a7e471e. 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/DES561597501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65ba8e3455165b9976305a1bc4c91475e28b806da51bce5847dbc1afea00aba. 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/DES561597503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c4da0e41d76be6235b968e34bb09351a50de047c9a426c38b928a8c1e4f53a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DES561597505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90379309bc9abd1855ef2a06509074e5bf730a489df0f70cddc1c1a01681c311. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DES561496812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab67a13d7cae7d95e51381fba22a75c7c299f5761d4bbce2b0bc0813ce305be6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DES561597508.
Adjust Your Set - MaBose Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7f152ba1b3e30832274f3f60ebc9cadd1e077c18ee34b3217a9192ccd67cc6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DES561597509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209b5f72b4841ce369cf6000cd64c4a311f80f2c4b1c6fd7c3020918b9a54f59. 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/DES561597510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81281263deea9febf976959dbe2e110691728ec0b261d71716acc471f24ec094. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DES561597511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c8717a290f864591aece5b7bfecb32bb1f883bf55bcbb07c7cd331adfdaf4c. 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/DEBL60926083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31dbfbeddd2a5048000c3e567af83ce90025491f5f4834a24ac0b3ed06c25e7. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEBL60926103.
Light My Fire (feat. :Wumpscut:) - Burning Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0e5697bd4853dfecc2b1e90ef0663430100dbb53273b88beb10e1030e34fc7. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/CAAD21010913.
Zensyou66 (feat. Hypnoskull) - Oldschool J. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1302b12a8dab405e12754a6716374ca0780b8e2a15e2cc1793caaaabc687106. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/CAAD21010920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe62945ec6ca2d36b77c255b6b0f0cb2d2825656d92cb379fa5c4d472b3a4545. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/US57M0537606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4953f60f16b40eb96de4231a61843cbf616fa6a5307e0eae57e1bc9d2ca704a9. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/CAAD20610881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944376cf1607e5f751a70668f9ac3f39398ea0cc6ab87ae80d6498a393f08b90. 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/DES561598203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e44dddcda86d34f741806e9c2176399bea88cc67f3433004dd1648ed0386e78. 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/DES561598209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90379cd203f14aaa5f71567a3783fc029d88e3250a4b765b498b356d023766f9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEOT31100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc655b64e675b27b2be2c5fd4f42054d0b1b4905ec685dd5b1b6c772785b435. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEOT31100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1bc3040d1aeef3a34e76c6d4701f4d81249c636f4775d36a793c087f97c793. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DES561796604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84e17e481bf31e349c62267d026f8385ed3657f8bc4c9c2d1fdc5cfa33d0980. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BEC260770604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ae1669ae4822e68622784018459cd86697ee65299031762faf51b70c55f328. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BEC260400103.
Square Matrix 002 - Limited Edition Bonus Disc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3787402ba799817f97d33d3d578e42365b649856589dec430904aa71bec5c5e1. 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/USHM90430371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ee9fd44d0036e9a4bc576cd624ae37da32edf472115dac945cfe59acd3c0d0. 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/DES562018201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69dbc71e35e31851930d7f8e34a80e12250a323e1640667410370e31ab8fc67. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DES562018202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7a2eee83596f763b2f6fce3815b1b6f7919edd6b6beda322138de8e060f3db. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DES562018203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011aad00c936c72a28d2cee148a90b4c29a9dd0607e862292ea4b2622bce5920. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DES562018204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa044283b62702d09a2c23b5357cd096b731798f964b421e1cf14aaa213be61dd. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DES562018205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22056229f8c51da9ba49aedf6c6a2b55c56706d61a1673d62245a25f4acb7439. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DES562018206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6ab92ac4032f51e028a536ef10502239e601bf809e701f5524087015ec8b1. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DES561693101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281038dd9b3dbab252ffc085950792903f270933319f3da33bad01c3a8553345. 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/DES561693102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0606cd3d330fb581e483243d8dd62a1a8907826ea32783c9b49b45558c08279. 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/DES561693105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e04c5d8b3aa955bf4107daaa8bc08aeae808400733fafe1521023451668c90. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DES561693114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494683988f8029207cf77feff32cbfc06da2a60915ea20d045ab030c1891fb13. 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/DES561598901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf129a2679dd49346efdb0d34f0d52327d9f4eee8a2a9d7a7d003727b1e8b5a44. 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/DES561598905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653259666c99ef4091ff115704c0a2cfa9e64fd2a6d9e8f74d345e8245b4a30b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DES561598906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5323f3c7934cd1ad45cf24ef7890fe514ef34f39fdf406f86409973e50d4e500. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DES561598907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24632fb3317ed8420f29108d9d92032aa06f3cfa77e541f79046582ec7854809. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DES561598913.