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 0x31c7fc1f88b65b509e50a0418ac7404a38a21d1387c6c4ecfd56641621c1bf76. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60cb19e6-df7c-481b-b141-c74aa954447f.json and https://artists.proofprofile.net/proofs/artist/60cb19e6-df7c-481b-b141-c74aa954447f.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 0xd9b78c8819bccac368d1e43c9f29951b7e303f49b8214888ef7a900741f34356. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEH742330879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b55d93eba8700dd3d3b3e9fcc0e16c666cb3139089797e89696b7d040636a2. 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/DEH742330880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8c8618bef0d3becb682bcf2cb33d95648e76d7bc43563ec7bd3606d87de957. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEH742330881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24619de22339035c6e6adecf3288c1bca94faa0862bc827ae0564562eedf8950. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEH742330882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fff8159b8d2f4855dcbab0b8a3fe1d5adbdb41903cbf2c4c478fab5ee5ba6b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEH742330883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffeaa121ae3668c3efe9e9694a474ee02101e1e05d08097fea97d04ae6f9ac5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEH742330884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55755823e676207b055494314149b17dfbddd3c83bd851d3cb553addbcdccf5a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEH742331456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cbb8faf71a72b7b48557175fd404e16d9754356abad386c233bbe93dff71af. 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/DEH742330887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb55916c66703251a73a68d126deef00e929551cec6c9560762fcc64de187cc9. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/DEH742330888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5056d23323beb31041f89f8f88f6eab14789c6e9c4ef436380c1d2ca10b55366. 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/UKACT2373237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f698dd5b7300a0c498ddfc33176cb4cfebc910161b1dbb2e25eea32bbd3037. 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/UKACT2373241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fbc0cc10f818d664b6775cb43a53afc63456ed1177546e8506e6ebd66e3c1e. 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/UKACT2373242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7bc762b53abf53bff584151b222e36f5c3471dbe719f9e8d3753b7f531f478. 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/UKU932460090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f89a071b2ce50a21cf8ba6f36ecf505d53a1a378084beb370942b7d3bec87e. 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/UKU932460096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0889fad85e6356d9d57be83be3789532733d8c0d1afd9e83a0dd466ba6044fef. 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/UKU932460098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ef433ca51c812c8c6b33977f54d0ec833e948681c8a927bcdc9a651e8fb7b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKU932460099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f4367f67bc08be88888443c62278543c7b7f11e34200b1d8a15df07d2fe854. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UKU932460105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa10c7afb3c5ad4c3c1345dffef2a7b33c17059352abc774f0a65c58af79141. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/UKU932460106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadac07e9aa2488663d0c87a14a7a2b202691b27f18f85c64584eb185365ee7c2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/UKU932460109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb825cd2a046cf6f1181f1dbd987de3d833e5d8193feec55d358be6e9e01c3f83. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/UKU932460111.
Creationz, Vol. 5 (Selected by Switchcache)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2a1e628645c3bf14071c116a1a15a11b07b68843b604216be7a54ce95b8d85. 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/UKR6V2282490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa477593a3737d5c667af9111aba2d056fc00ad42a12bace9dc1aa999727bdda8. 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/UKR6V2282491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9043d607a524dcd1f494b1f9e0a21995000d97211105a4c8305cb813999ea0e. 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/UKU932361201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b112a504fd8cc0e760f8c0487378c944e181f71c9b822d5f2db221ff1a502. 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/UKU932361203.
Nonplussed II (Compiled by Ana Valeriano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842bd5487a96743c0719d2ba0e897f74acdf69ba1ad6e5190698522168c9af89. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBKQU2310905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865410dd44abce0fe1ee984922d96a8073d38bc385630ab8dd46f043dc9c8b42. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBKQU2310906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd345484b8b23e4d67796b7ed5d6fbeae63956b6acc524f6f556f8c555e96e67. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBKQU2310910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374859a55613f51d05ac7a77ea9a51515c8e9cd29ba2517511aea16264fffd11. 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/GBKQU2310914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc428e2cb9c02250c03ed30a2ca8f72a2c2a9d3a1d370c43d663fe67bd4480981. 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/GBKQU2310915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97319f1a5519bd27025b9b0ab9cb0ed419c23a17800b25a13a31f3da5a306d7. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBKQU2310916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0510abc986c041c107de2331cac1cbefabf83a47717770c4b7feef7662cf5d. 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/GBKQU2452862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee1a7bb84b87f401462617a29fde22854bb55fe0a6dbf45d7d3db7d4adac1e. 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/GBKQU2452866.
Riddikuluz (Spellbound by Psynopticz & Patronus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692e5414d074063965c49a1a8db03884226dfb940fa09197dae0c6c9deb42fa7. 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/UKU932460730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3b90e6abf43b75f052e3194c84f02b397cc29399bda8d866ec6dd997e25e52. 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/UKU932460740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd77467c64b3fc82aeef94fb73aa55025c075ccbdfc484459338a1ea513294f4. 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/QZMZ92317267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb1155d650b38d578ddf52484f48abc7c7d012f3680b068bbab83c81d138ab2. 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/QZMZ92317270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d1f3da3fd68ded4e080d1cdee2ebf47d395a0a4945f0aa42014a56792e8155. 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/GBLV62215448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d9f53b7d4022fc945444dedd242056395d5b6a002b455af2eeeb68125ea1f. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/GBKQU1524659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292fa96c41bb037c370d1a8d648a1177f387fd0cbc470b66bb25966a88d1ebec. 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/QZ5FN2361629.
VA Connection Vol. 3 (Compiled by Neurology)