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 0x51c47147442efbb6474430312356bafa40ffb0bbf10edb13a70e87285567a208. 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/88a6c229-d35b-400e-90c1-5eb7404e6f00.json and https://artists.proofprofile.net/proofs/artist/88a6c229-d35b-400e-90c1-5eb7404e6f00.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 0x8b25abff8ec540786d9ad27efdf4cc4c47572f5447102ca12109bfb233ff5344. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FR6V80006285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700fc4caf5dd298fc302134ec72d325a090a8919241347d39b549c6cd94c86b3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR6V80006288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3530ad1b42ca205d6648e4bbc8f3d2975ca911e9519161bd435af855f5bea7. 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/FR6V80006289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff2ea0406fbcc8f6d251c82f2364f586075cf72f7f6b58f8cfd35079238bd20. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR6V80006291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b98b621d146a57af7949cace9958af5f7718b8650727a6ce8fa4bac1f429c1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6V80006293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930c80b46996a9390b0f7fa6759b800faf933d3503773de0401de46d21483f02. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/FR6V80208294.
Barcelona - Paris. 2nd Flight (Select and Mixed by David De Barce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc879f946aabe79aa4497523bb6681016afbfe52dc8874466c5c2b933a9d5417e. 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/ES6101323303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b13603ec1c29bc827a40b8f48befeebbe5fa8814e754f7a523f194402154a8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FRQ679800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b13603ec1c29bc827a40b8f48befeebbe5fa8814e754f7a523f194402154a8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRQ679800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe581f86f7548ce9e9bc156755d4c89b6b4c9d1ec84d99e108e70be50cc1259. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/FRQ679800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7aea9e06949d9bffcb4f1643c00157f1e133df08303708fec676f10467dd36. 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/FRQ389800147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacb5d333897f240825f9fe721786cfd0ef7814560e06a4b7030df49affd2c2a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FR6V80006297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b98b621d146a57af7949cace9958af5f7718b8650727a6ce8fa4bac1f429c1. 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/FR6V80006293.
Trip-Hop Music - The Must Have Selection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac90cba77c593727eaf9e586cdc726ae2997ac53cf0bf884fedaf016b89f8e4. 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/FR4E49500400.