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 0xbe99d69081193a1586314c0ab30eb9b4fcfdfe0a5115634a211a7ddab5c0f101. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a04c4342-c8c1-44ee-ab1e-a36a835ab778.json and https://artists.proofprofile.net/proofs/artist/a04c4342-c8c1-44ee-ab1e-a36a835ab778.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Francesco Mancini: Sei Sonate Per Flauto Dolce Basso Continuo
Sonata in G Minor, TWV41:d3: IV. Allegro
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 0x57794c815b933d32e484036b0f802a1c56eb9cd648a091215347189fbb14a5bc. 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/FR46Y1643304.
Sonata in G Minor, TWV41:e11: II. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a2219b1ac9724c52c032071219d57fa07ced55ecbcb5c36fb4a9e531384e40. 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/FR46Y1643318.
Sonata in G Minor, TWV41:e11: IV. Tempo di menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a67d34e0bdfa56f7db188bdf65c3ac82eeb86f44b0cc754de25da29e0da44d. 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/FR46Y1643320.
Sonata in G Minor, TWV41:d3: II. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65b8d69a6dda085314b458f826a9b83104b13be19fb8272596daf93191d74ad. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FR46Y1643302.
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 in C Major, TWV41:A5: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f5bb1be7115e88f34824b7204d4a07f5b630faecc718c337807e3e9abef8f2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR46Y1643306.
Sonata in D Minor, TWV41:d4: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c76a6170a5c836fd03070c8e4ac716b47a41315b6b5db557f8c5d8109742882. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR46Y1643324.
Sonata No. 5 in Si Minore, Op. 2, RV 36: II. Corrente (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8d6336aff722fca72e9f5981fcac46b4146a2e55718d1e60c2833bea896b57. 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/FR46Y1136615.
Georg Philipp Telemann: Trios and Quartets for Recorder, Violin & Basso Continuo
A mirarvi io son intento, HWV 178: E vibrando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021dc48abf3953b0fff4a202507a5266e13d160e303b0ee647c9e7b12b1c488f. 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/MX2831000388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4b47e5812204b1d3b5f56a4d319e074ce549ecce9ee07e9ad1db03c6aa5a1f. 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/MX2831000390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9987bee4c96c788acf5f87b4ed33d6a496ffdd610f5989c6dbf7eae23e32a925. 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/MX2831000391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d3dc6e87d3b617e408d4c140b14964700b8ba43b4349ae882dd8627912032d. 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/MX2831000392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5593720b9077b23086b28496dc449c06da2b5fd44914726c8b977b25ddfba2. 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/MX2831000393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ef22e755ec4346040b4ca1e495d061a1324be02b84196bc618942ba76211ca. 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/MX2831000394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d3cc6cd74a35583206af93c9e1655312d0fed95973061a50c338a68b9f3c2e. 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/MX2831000399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb12e813c136f5a2bcc7efbc7cf2ea47a32fa32a8251f121ec47357a06bf6bfc. 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/MX2831000400.
Se tu non lasci, HWV 193: Quando non ho più core
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815bf5f3668bb48eb89bcf447b601b0c29b9f996fc5b6a41e189b1508fdff5e1. 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/MX2831000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5d606aaa922ede2d0625db59d294d1da70d6d2c0ecc220286f7119a7678cc7. 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/MX2831000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd591088e8394031720e0735b080b60cdd8eadf384cb39a77dc67dcf96e026990. 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/MX2831000404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7047443151380e5a82418cf87073b53aba9cc732b3cf652f8506ac6fe078a657. 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/MX2831000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf475bf400e6c8232e29a33cef9e51a84502861d14869f1d42be37b70d8974ea8. 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/MX2831000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ba820ccc09fb5a868db0ed93d5d6053820eaf622b171dd7bd4ce337644d600. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/MX2831000395.
Fronda leggiera, HWV 186: Saggio quel cor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedef87c32e1a62d25e6da7901040828be78242625c72c148b07b7b06531bb2e3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/MX2831000396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243a4ab32b5338f8aa01593d03f040f996e4110706b08f75ed27fcc5909b3c82. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/MX2831000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86abd19587e6b635e9207bff2ff6909dca158d011eb66ce60f183a36fcf8ea2d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/MX2831000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cb507ca9f0ed9357f9a857e861087ac9e06afb5c17ddba097f7b38f5ecabcf. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/MX2831000407.
Chill with Vivaldi (Enjoy the coolest melodies of Antonio Vivaldi)