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 0x615c85b0844966f72f9fe39c6bba6a572906da6626a7d7c3f6ff0c728d6befce. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b80c82b6-eb67-4648-9091-f26c0a81abd1.json and https://artists.proofprofile.net/proofs/artist/b80c82b6-eb67-4648-9091-f26c0a81abd1.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 0xf499b6b8f7331f16a2045f0530887fe363924d107ee955065df7023b1b3557e6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GB7EJ1200916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69d45f97b32f15bd842fbcddb0b8be676e51ccefc2db8c7c1b7857a76c2a968. 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/GB7EJ1200917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90663479b88be4818f62831be24056ed610d48fbbd4ca9fcc81cd6a5a9d814c6. 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/UKACT1614027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ef92beaca35b7c57623048a707b4f183a7c4ee5d0217bdbf252f4ab8ea5103. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKACT1614028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cfbf9c8ea48def74effcab961d7f534584b51831cd4f453acec43c95c69f53. 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/DEY470916612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ab0ce02eee6ae911e8d9fb39695d61b22da6a5b7db3a4a78ebe4b09153cbae. 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/DEY470916617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac6f5db79de3ce58f5ce408500b04ca16a4ddd6840b34ccbc0be4ef71b874b0. 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/DEY470916618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bebb639749793edbb520ac7647b0192c031cf6be0900bc6ce07f1b20f0246ba. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/DEY470916620.
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 0xab2374d3162c633dc60082b24a6d689261d25cfcfb0f627b11707d085f3c795e. 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/DEY470919659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0bf4111cbceaa25f759cf1b886f33c92ba93af54b695d585b05100810aff9e. 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/DEY470919662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d82775b58c2253a6661a44bfe205821e68069a4c2e746fd3aba54fa5b04fedb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACZ1757395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d10fa3bf269076f0b1f86814d941b6e0a01b3e049bfc66ff295c1852ab297bc. 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/TCACZ1757390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1051c5f7b0584495818e2018c568e62a2c0101a0d54c293b4f462a8fd2313f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACZ1757316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0744abe36a954d1a67168b0a5bb7896d2d30655122d89051dbd933062b644b39. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCACZ1757387.
Take Our Time (Neighbour & Elan B Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cd2c99ede150d3040f48155e6620b4f3cfede30fe5673a3bab79ffe372373c. 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/TCACZ1757393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b6b8caeeb50440855e9243c759a66e5c18ea35c770965f0f3572f8c8b3836b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBHCD1268112.
Private Lounge - Sophisticated Deep House Tunes, Vol. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa45ed3f12091d376fe6e5c4686ee1d3c643b7a7a9bc806c067367aad98b679. 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/DEW871403012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda83bf544466eb69a6c2642d4b0f0cdc99ffd08571bf9217eaa977395a32c99e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEW871402259.
Reform:House Issue 1 - Nu Disco Selection