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 0x2fee668e3fed6fe0d3736c117466ff7a7aa37d6dc082039b20e32c752dbe6827. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/086f2b58-6378-41ab-aa54-b5fa1c629741.json and https://artists.proofprofile.net/proofs/artist/086f2b58-6378-41ab-aa54-b5fa1c629741.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 0x4c766585ca896af9e63a30faa2021db198e5e049ef1944d59dcb4e1271980f52. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BED762502301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896f8ee0bc2f9c191025c352ea2771b87d799b8a3d19ddff361bc1a86495740f. 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/BED762500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b55a251ea53d30ed42bc58488783d53125b1fe88f33cb245cb11487103cda6f. 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/BED762412001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55e889f966c1e34bf265ef970b54faf9f0dfc652fc6b10608a623721bb65b93. 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/BED762505001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786b1326cabafdbaa1c41fd82d0ffb278faaf11c555ac030ada54b03e8bc8e5a. 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/BED762503202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d6ca08c8f04a8578b78c258e84296e6a0bf91244497def2f9b2a5ff8959e98. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BED762503201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71cd627e9e05705055f968b155dc9380d1c2b4ae4623b5e502e600da1c5830f. 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/BED762506001.
Lachrimae, Rism A/I: D 3485: NO. 1. Lachrimae Antiquae (Arr. for Piano, Viola d’amore a chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6a8869be839cde43c2fa6fb74bba8622f5830ec2ceff96f2308e4996713f7. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BED762205010.
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
Goldberg Variations, BWV 988: NO. 1. Aria (Arr. for Piano, Viola d’Amore a Chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8bd3437491ed89677db886ae310bcce606292282027e110c9722408032f73d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BED762205002.
Prelude and Fugue, BWV 846: NO. 1. Praeludium (Arr. for Piano, Viola d’Amore a Chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220371c9c2852544c54fcd5dfd8ac4ffc24ebc5b790a2dd6338ce0150a099806. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BED762300003.
Theodora, Act II, HWV 68: NO. 36. with Darkness Deep (Arr. for Piano, Viola d’Amore a Chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa8c0e91680e789f388933c43fc79a380d6b4740ffd83d67cedb559ee2d59f7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BED762205004.
Que ne suis-je la fougere (Arr. for Piano, Viola d’amore a chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14984a8232670f573ade7377dbbf772dffbb774f624c1ea2cc2fd5fd3179bbf4. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/BED762205005.