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 0xb870859105301d99f754ba311e99a46b05fbc64484a6112485fd7967c3a9ba1d. 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/c3180b19-c84f-4fd0-ab87-7f52498064e7.json and https://artists.proofprofile.net/proofs/artist/c3180b19-c84f-4fd0-ab87-7f52498064e7.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 0x20c08a99fd644729c23e8a416abea009cf26e7173bc47c9ebb8103597a63cacf. 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/DEY599700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68209c40d3cc7be6fd631f1d78bee7e333795bed66ad0a3095fedece51055a15. 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/DEY470909790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3206e1956bb0e4021135063ce8a4b47349ea61072dc7f2df7eaaed334ec77793. 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/DEY470909791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5455f365d35209f9e48eb3b831269c6f3127b4d7fbb898e7de65fdac4ff090. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/DEY590100204.
Support Your Local Groover - Special Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26594d8b4ee0c985d4bcf20e5ebd228b8ec8a7ef0848597c4de2ae97237aa371. 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/FR6V80039846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea6c0b42015dfff3eb288283b79c2643e868ebaabc92864581fbda4006a9394. 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/FR6V80039848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff911f8587e5bead8a3d7035d1469f8be84cbb4e827dc8f50927c4adf9bd8231. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FR6V80039850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b0379a8ad191ca533ffadda1eb0e33bf8c938eac5e1e21b7ddf54f2541ed91. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR6V80010700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c784ae900214e479c44941adffa50ce2533b8364a4ad85545c48701b6bc69ae. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR6V80010701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd67c2d3b8213a0e5c2584961984f058b4a77880d2ad5c0582efe317d306efd. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR6V80010703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257ffa68b3f721626d10863c84369fc952fd9695b852f9d5ffb37b9020f4862b. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FR6V80010704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0659e32131b943fb5602f5eba70bbb37e24bc5457ae489bb3ccfe5cd1920f282. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/FR6V80010705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bac466f3bfb02540067e0a6ffc95d9124d5d39ef3815f435c5694d44802c6e. 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/DEY470915267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed13fd2f109f3cc7c3506fe50fc7fd483c75492c4a3cc35f4847a10acd71221. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEY470915269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8fa1fbb1fd4d3ffaaedc5eb799b8c0a7c4a1b21e79adc71d2cc7c812b5d464. 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/DEY470915278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368843b5fc869f6ffc51c5bc39e9520f2b10212b769a6d5ac2a9d5cfec13544c. 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/DEY470915279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e405ee8a1016baef634660fe95690d89c4c44abcbd5da10e866d8805fca0b8. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/TCADL1800755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e0d6f6e995e889b8b822c77b8752435f5633fd256ccc401d27ca0d00bcfea6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCADL1800757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5745aa7b3074d65e9dbad60cc4328d0184dd7d2ce0df1012bbf2e5c193773166. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/TCADL1800758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ea88dc6983ac2850af043e7450ce5b290278102240295b47eadf8382fc96c9. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCADL1800761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2a03f1a121d65875455e1d64a785c111b24ce5722cb8a5910aea4dbb5e1426. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCADL1800762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec3467a601ae437cd06541b839bb8f9d20bfadedb31d3e5250b4d1586751b3e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCADL1800763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3d89adcd987a8e5d0d224d82583b8b09c08c908e3fe45bf62d5473d4e76a20. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCADL1800765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ea96694446fdd1e69576d4541acb8d7c3896d112e50078e290fd3aad14e30. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DEY471812263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8de834c8d51096ac892d5ec5d4be7ba77d4c0d10d1fdba2dfb8ac44a3d30fce. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEY472474628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925302dbae9e303348173326556ae5e511f05a0b18f02e3840255e0b372c17f8. 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/DEY472474630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0f1b3fca365f5ed29b650c4e02b8804c0da520543e843fb52a88a57555215c. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/DEY472570241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49cf56b9c55a913265222f375236b290cfb6d3df4eb5d5357269ee12f8a01e2. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DEY472570350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4c4f00fdbe6e5d80cc1a25d9216c75ad44bb156b553fd52bdde16f447096ca. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEH740801344.
Obsession Lounge, Vol. 9 (Compiled by DJ Jondal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4cbf1970e9ec453c765ba99dd681be7cb7e7b71f1a984e6bc486cdaab825ed. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DKUCA1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe630b52f3413e2a55918d6ae34af737595c853520adce7f7fd02400f64b6cd. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEY470943591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157c5a5df871211bb502f665f0e2d2b551c2c540ac551adb1b6c534bfa78a86e. 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/DEAS81500083.
Obsession Lounge, Vol. 8 (Compiled by DJ Jondal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c75aed19c762cde380abc7e11dc0d27144c3cee5fcbcf183036ff7873e7d6f. 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/DEU231400482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4530f08e279df858b7231b4c6bdd02d74ec808832e433fd52ccff34452d815c. 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/DEU231400481.
Chall'O Music Presents Chill Out Experience (by Jean-Marc Challe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7a1ec13e524805c4543ed29f3873f3d477fe0c0a5e35d99a9bc6b29b277d78. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DKUCA1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38408f5efb5f0942ee951a025860c1e8976a40c8df0c5a9252a3d6ed4bf637a7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEY470935284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7534b5515f8e37f5f4938e049bd555e4240f2095c22bb60b0cc4bd957c206d. 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/DEPI82210844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3784accbba37275fec97733a115de1d86717531e3fa5e0636866f177d8f514. 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/DKUCA1800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e04261d1467e4e17aa672345d450f6a0b9b20165490f1a60e33466a9feb52cf. 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/DEPI82311665.