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 0x270cf79c6e6f5566218201b3befebbaf495d40abd2287699d0a250e3e6e8f937. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f65981c3-37fb-4b57-9633-8dfce1661f8b.json and https://artists.proofprofile.net/proofs/artist/f65981c3-37fb-4b57-9633-8dfce1661f8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brandenburg Concerto No. 1 in F Major, BWV 1046: I. [Allegro] - Recorded 1964
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 0xf90f931916a243181651ef1f78369ebf764b9f76ce80db162b5a706cf75f9274. 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/DEF056400071.
Brandenburg Concerto No. 1 in F Major, BWV 1046: II. Adagio - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc626686e57ecab5a07cb67b67b29146954ceb8b5488e338b6695c3b54116ab9e. 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/DEF056400072.
Brandenburg Concerto No. 1 in F Major, BWV 1046: III. Allegro - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ead0877965ad591bd979f54994f956dbf9b192b84e1597d4317c165d03f5513. 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/DEF056400073.
Brandenburg Concerto No. 1 in F Major, BWV 1046: I. [Allegro]
Bach, J.S.: Brandenburg Concertos Nos.1-3; Overture No.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90f931916a243181651ef1f78369ebf764b9f76ce80db162b5a706cf75f9274. 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/DEF056400071.
Brandenburg Concerto No. 1 in F Major, BWV 1046: IV. Menuetto – Trio I – Polacca – Trio II - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c04e000365a34680ed85f047f1f1c548423fed3115aa95cb87153f79e5a4cb. 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/DEF056400074.
Brandenburg Concerto No. 1 in F Major, BWV 1046: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc626686e57ecab5a07cb67b67b29146954ceb8b5488e338b6695c3b54116ab9e. 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/DEF056400072.
Brandenburg Concerto No. 1 in F Major, BWV 1046: III. Allegro
Brandenburg Concerto No. 1 in F Major, BWV 1046: IV. Menuetto – Trio I – Polacca – Trio II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c04e000365a34680ed85f047f1f1c548423fed3115aa95cb87153f79e5a4cb. 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/DEF056400074.
Wir entdecken Komponisten: Wolfgang Amadeus Mozart – Das Wunderkind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa799a0d0459888729ff6d759decf4a41f52153ad9ebe0c5a05bc5ca00cf528e5. 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/DEF058231603.
Bach, J.S.: The Brandenburg Concertos; Suites Nos.2 & 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90f931916a243181651ef1f78369ebf764b9f76ce80db162b5a706cf75f9274. 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/DEF056400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc626686e57ecab5a07cb67b67b29146954ceb8b5488e338b6695c3b54116ab9e. 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/DEF056400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ead0877965ad591bd979f54994f956dbf9b192b84e1597d4317c165d03f5513. 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/DEF056400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c04e000365a34680ed85f047f1f1c548423fed3115aa95cb87153f79e5a4cb. 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/DEF056400074.