1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xeb4ac73477b86f55a70e2094704b33f8ebe88b552544741625b190b74010a1ac. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43fc25a9-b47c-4853-83be-a8ed534347e3.json and https://artists.proofprofile.net/proofs/artist/43fc25a9-b47c-4853-83be-a8ed534347e3.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 → block OTSBitcoinBlock must exist at that height 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 0x8149ffd302cf32f16d308b633fac3e81b78b8a17f0d7f96f6b03c848a8003391. 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/FR9W12035398.
Suite parisienne: Le pavillon des fleurs
Arcangelo Corelli: Sonate da camera, Op. 5
Violin Sonata in D Minor, Op. 5 No. 7: Preludio. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f778a8a2c084889a91d021736a4c1ddf3b883aca28f56d6d70e107f6e2d144. 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/CH6542157001.
Violin Sonata in D Minor, Op. 5 No. 7: Corrente. Allegro
Violin Sonata in D Minor, Op. 5 No. 7: Sarabanda. Largo
Violin Sonata in D Minor, Op. 5 No. 7: Giga. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7e5f46b90559df0b6ef6bd546f6a9cdea00beed855c641cae511ce27f8d414. 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/CH6542157004.
Violin Sonata in E Minor, Op. 5 No.8: Preludio. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc450e8527ccbc9d76bfeff976f530fc50257bc10516247dcf8ebc856852bf2fd. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/CH6542157005.
Violin Sonata in E Minor, Op. 5 No.8: Allemanda. Allegro
Violin Sonata in E Minor, Op. 5 No.8: Sarabanda. Largo
Violin Sonata in E Minor, Op. 5 No.8: Giga. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf221c912199b0c2850bb75dfda01e7049b95cb2d18913ff6aed7831406bc69b3. 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/CH6542157008.
Violin Sonata in A Major, Op. 5 No.9: Preludio. Largo
Violin Sonata in A Major, Op. 5 No.9: Giga. Allegro
Violin Sonata in A Major, Op. 5 No.9: Adagio
Violin Sonata in A Major, Op. 5 No.9: Tempo Di Gavotta. Allegro
Violin Sonata in F Major, Op. 5 No.10: Preludio. Adagio
Violin Sonata in F Major, Op. 5 No.10: Allemanda. Allegro
Violin Sonata in F Major, Op. 5 No.10: Sarabanda. Largo
Violin Sonata in A Major, Op. 5 No.10: Gavotta. Allegro
Violin Sonata in F Major, Op. 5 No.10: Giga. Allegro
Violin Sonata in E Major, Op. 5 No.11: Preludio. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daa2291b8661e552534f0e1036b147f513ea35e057a1757044c1caceaeb87e1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH6542157031.
Violin Sonata in E Major, Op. 5 No.11: Allegro
Violin Sonata in E Major, Op. 5 No.11: Adagio
Violin Sonata in E Major, Op. 5 No.11: Vivace
Violin Sonata in E Major, Op. 5 No.11: Gavotta. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa282e4b8c3d1dfc4b1f6792915c70a9b09b2be5d75c25944b779a5bb8805d480. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/CH6542157035.
Violin Sonata in D Minor, Op. 5 No.12: "La Follia"