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 0xe846cd46e5ed2db847475dc44577c30111ce165c0720cfd6d6893f3def05eb9b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6b69785-228b-4433-a3f2-c89041482481.json and https://artists.proofprofile.net/proofs/artist/c6b69785-228b-4433-a3f2-c89041482481.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musique militaire américaine (feat. François-Julien Brun) [Mono Version]
Musique militaire américaine (Mono Version)
Hymnes nationaux africains et malgache (Mono Version)
États-Unis D'Amérique-United States Of America
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 0x0e3c8fcbf0b7d0e7572b77931b9d109ae95cfac27403ee691ddbeabe4d8edbda. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR6V89201922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd683a36ba5ff162115a0e827c3e6a7719ba07ca1d9062638427ca599d671c71. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FRZ709500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9683ae00c60df888a390451c883e81b6e347c23f368b4ee9de49fb93d9ce5cb6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRZ709500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce3dde385a9fd2c62dbf7595c6a36369d9c67f7cf65cc97140160c9b31ea640. 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/FR6V80006434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cafbc42f93f0dc0e5f3fa7cc7563796992f0ea6a061e4eca28482bb8746a7f6. 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/FR6V80006439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51246598a5289718fc739ec20449769dfb2cfd7920bcd14995d5fa921578e6c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FR6V80006443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71c3f05ab3cb3148f9f28da3931b986241343d4ce02c1dd359dea1763f7b497. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR6V80006445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc1cf0acba2d9fb7a6e59eeddfa481d20a4d0580c23249d5f7848efbd239112. 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/FR6V89202159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd5b5a05a5ee4639791c745971775705cf74ca3dfa69ba966935c18985b347f. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/FRZ709500059.
Offenbach / Arr. Pichaureau: ParisiAN DREam (Suite concertante after "La Vie parisienne")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6d70f53a3063c91b3c3661543e5df15b21b2e27607a92802c7ddcecb70d21a. 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/GBAYC9302561.
Strauss II, J: Postillon d'amour, Op. 317 (Orch. Pichaureau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4de70ab98756abf34c2e9e7c206bd599cb010268ae825c614bcdc1dbfa7fa6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBAYC9302560.
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