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 0xa8db3407fed0e963150d03a43209fb858c0f25030eb978e50a449436d1918420. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39b5a978-32d7-4fd3-9928-d6efd624a340.json and https://artists.proofprofile.net/proofs/artist/39b5a978-32d7-4fd3-9928-d6efd624a340.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 0xd446532cc8e21da03cc91563a89b4feb2f0128f0078db68d858ca784082897fe. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/DEQ121321203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78fcca20f2be62d6109e2a85d42e6956bb287670dee1c938f2faecefb32a5a5. 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/DEQ121321204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9c9d43829d9f17784a5adc14d6914b1a449fc9507e9015d809d01c751625cb. 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/DEQ121321205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf043f4a39d44cd6cb09572dce57c7d10a33bc5777c00d187ed4619109ffc9a87. 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/DEQ121424984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca4450dcbe3c4c5369b4e37117ff1fb4e366cefdf3ed99537b0b3c806e15bc3. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEQ121424985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d1061eef2e223077f130567c00a97a2afc24156465fabe7044a3e720264734. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DEQ121424986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204c866f68ad6f6a935d143c3c436c7da98648afe8ad515f1d225c887244b584. 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/DEQ121424991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e576620f89655d7b2171fb592597c3686e8abd72a944b0c8dd3670d1cf5a8f. 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/DEQ121431482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb508aab49e11cc4bb16a0c41092364d74095be8fc2ebe592fdebbbd4a1e605f5. 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/DEQ121431484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd540f513ff5d0e8038df1bdbd76f7f54033af2397bf7027281b0d25393ec9b1f. 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/DEQ121431485.
Need More Zs / Firstbase / Can We Go Back
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc987c79bc5c3983258b59c6ab6de40142152c7771c6594dd6beea89e4270b444. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEQ121749070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf86f8b6b0efb7fc58edf3df948c1ffb495fc5b7514e71844aa4bf25d21977b. 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/DEQ121749077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c497951a7fff6fce4bdbff22bda7183ab1595290c7050236477c5506816db3. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/DEQ021904145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe996e45e19e9c93a13babd263228f73be2e86f185ed5717733efcee2a94395. 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/DEQ021904154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2773dc764b1405cb3c12147ac9c5762c59ffb45e79d07706d3b616bce8706f. 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/QZK6J2011577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd723a24121324805cdfc6ed57fe3675f6ca68543296df634d961cd6713a3b1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZK6J2011578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa706ce05ffb8344ed1b0a737b1adb63309411807da464df63fc9ce69f90a3421. 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/QZK6J2011579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1171e78b54c120d965bbbfb5e0740794755dc3cef6289f9d2195cb37dc54ff93. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZK6J2011580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43fa8a82d61c73585c586bb524f259c3cb0709231bdca2032f41cdcfa146138. 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/QZK6J2011583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe5abbcc07001eb54a0c975d6ff4162bebce0c88581241defa35508898f33f5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB72279963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fbd648888ee4270ea9d0118d7c87af813a5872c2649c98b6d2cdbd8c71195a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB72279964.
You Don't Win Friends With Salad / Real Cool
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70f4e39ee59672b7e0e9faefe1b4e2c385d287a327c90f2e905c4a0139a08ed. 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/UKN6K2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f61ddeb4590fd3ef9f2bc6c47972d2d71d18645fbba8c94c9c7c5af07120afe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKN6K2400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3933734a32040a3964d45d231e91aaf5fd28edcc9ae1c741e739932251a6769. 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/UK96L2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde72ba8990457af8260d87972c47a5379829a5cfc6e6e1bfc78fc285b82a3c96. 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/UK96L2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd203dba7f7d141953a012bcc48e3b805573596fabdfebb06f06f3aa6c14680ff. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/UK96L2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fd79a27efa05920bb8339cc277e2c7a1a3e099c96ee9d561a644e8d575707b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/UK96L2400005.
Hooversound Presents: Submerse & Fluid Haunts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27fa509cb8449148d024821b12954debc77adc2c9bd53a9a7380b3dac87bd35. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DEG932504422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad3b302e9a1522863377bd1a29b8ef5ec0a7ba580756d748d3b9879037d9857. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEG932504423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c7a859fb1ec73a11aa3b053989066c875f33c9c87775b6fe2a5997b3d8b847. 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/DEG932504424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa665b5f1f74866b377c87772b05e36abb9c27674da775d1acae31707bb983537. 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/DEQ121215936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305f2ecb9f1913772b3c29675a1c5a98186bd027d2bc4bb9cfa5009f18fe775a. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMFMF2005114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305f2ecb9f1913772b3c29675a1c5a98186bd027d2bc4bb9cfa5009f18fe775a. 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/QMFMF2005114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f0e223f5925ab3d7b5d493a78ddad84d88e509de59dbfe146dbb0bee5f0e2c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBCJY1200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962a3b8881139a3a0c26a69ee1a39562334f8887fd0f07dd746bdef492a2d393. 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/DEQ121642099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b21f979e4e622ebce714cbc2403b15a1992568df78fea61d010ab56542e9ce3. 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/JPC102400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79eb03ee403a6de4e036a1852996f6d8624adba1a62dc894cfc48e8462872eb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/TCJPB2463522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee180d0fe7edac985b7bacde20cf6b63d18198308fe6906fb0f211cca5340d38. 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/DESY21400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bddeba917a8c26c6e30ce7effbc34affcc20045ff89b0d8d1fb6f0be712f60e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DESY21400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7031023b997ef949eeaff1af6c3aefa02af457a9275a09049a0192b40e133f. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBCJY1200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b21f979e4e622ebce714cbc2403b15a1992568df78fea61d010ab56542e9ce3. 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/JPC102400203.