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 0x01050f2bfb04d08961d8a78887a6d5fdc370d84f8501fe7bef0f588d7fd3caab. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/760a9709-0c0c-47e3-bb80-74e1ba2c961c.json and https://artists.proofprofile.net/proofs/artist/760a9709-0c0c-47e3-bb80-74e1ba2c961c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spicy - Exotic Music for Violin by Biber, Schmelzer & Fux
Bewitched - Enchanted Music by Geminiani & Händel
Schabernack - A Treasure Trove of Musical Jokes
Sonata No. 1 in D Minor, "The Annunciation": I. Praeludium
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 0x263a6409913f98abbf2e6e8bfc55e97158bc857174b15ae7d7121cbc348b145c. 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/CHE272301362.
Sonata No. 1 in D Minor, "The Annunciation": II. Variatio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b0151bf3de4be3ff2d8ab94820ed8e2061200eeda32b4cf6f6f197ed9bcb7e. 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/CHE272301363.
Sonata No. 2 in A Major, "The Visitation": III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7642ec02c33f29f5ae939be381f279cae5426a3555d55ba859584cd2782d9019. 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/CHE272301367.
Sonata No. 3 in B Minor, "The Nativity": I. Sonata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c496f70532097411ae08cc936336db7ba207bfc1c83ff36830f29a5e5240b03. 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/CHE272301368.
Sonata No. 3 in B Minor, "The Nativity": II. Courente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7e3e8444a356092d32133d5cf1ccdf9a5952d321ce040b84a21f07d2a92f87. 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/CHE272301369.
Sonata No. 6 in C Minor, "The Agony in the Garden": I. Lamento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e31fb14a3c72a06cb69cce403ea1f20adda0381d789ca8c7cbf5123ac5d551a. 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/CHE272301377.
Sonata No. 1 in D Minor, "The Annunciation": III. Finale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daf15560909cd22eb3f45e2e2ce17a4f3b6ae76cdccc56bf7c3142ac1873dc2. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CHE272301364.
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
Sonata No. 2 in A Major, "The Visitation": I. Sonata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9c5d35a345486c085eea6283cd5d791601f9673bcc21a66e7c1514a52aaf7d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CHE272301365.
Sonata No. 2 in A Major, "The Visitation": II. Allamanda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b905d130b0eddcf71e0c7c45a4c591315a9a8cd25f51c7de5796e4cff3f32c. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/CHE272301366.
Sonata No. 3 in B Minor, "The Nativity": III. Double
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958a5fed4512f32d860b0b6ccff10501c990f5023aeb1f1b959553a8ee3c1ec5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CHE272301370.
Sonata No. 3 in B Minor, "The Nativity": IV. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeb7b35949a6b5196c2e8017aa74f4e11ec22a2e8aa362be130eccf1aa77d24. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CHE272301371.
Sonata No. 4 in D Minor, "The Presentation in the Temple": Ciacona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bc11826bc49146a44f1dd882b9134927440ba19f24131e5ba72e843982293a. 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/CHE272301372.
Sonata No. 5 in A Major, "The Finding in the Temple": I. Praeludium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1b2ce58834998efc2eed0a86fe54263d80e2d6826af98d81d01482b9e5fa8c. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CHE272301373.