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 0x7ff850211260cef561087ea9f180945de4936a34f1e452bbda05d36993fa6697. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6469b2e1-2792-4fde-98af-649e48db55b6.json and https://artists.proofprofile.net/proofs/artist/6469b2e1-2792-4fde-98af-649e48db55b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Première Leçon du premier jour: Incipit Lamentatio Jeremiæ - Aleph. Quomodo sedet sola
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 0xe95195d302337336fed8751d51382e21024bfbc8eed8fde1ebd3c4d62e2b0d5f. 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/FR7JM1724010.
Première Leçon du premier jour: Gimel. Migravit Judas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ca03c0227d304ea1a30ed21cb08237220b72d26d9014aa18ff3f288c3ddd35. 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/FR7JM1724030.
Troisième Leçon du premier jour: Jerusalem, Jerusalem, convertere ad Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfd44fabbaa5c81c05e676a3cfd9d3680890eccd32141aab19fde2bf3398b4a. 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/FR7JM1724170.
Sonata IV for cembalo obbligato and violin, BWV 1017: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e3e5418b17ff9e1f720fd8b7a48c3ab40da7f333645eef00e3442f3e18a22e. 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/FR7JM1624010.
Robert de Visée: Suites à la Mémoire d'un Poète
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b4d7a169da305bea9250c17006463a7f1d396c06b8d033d36251c6360cbf03. 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/FXR522412704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6ea84950cce18b5c5d54a3d5feee3206192d6ea03613c838ad12de68222ee3. 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/FXR522412707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaf7045a790143bf3be99007db3fc13e995c63f95154e693d9e4cc7c3d5d1c6. 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/FXR522412727.
Visages d'Orphée: Cantates de Clérambault, Piroye & Rameau
Sainte-Colombe & Marin Marais: A deux violes esgales
Gasparo Garavaglia: Cello Sonata in G Minor: III. Grave
Giulio Taglietti: Aria da suonare XIX col violoncello e spinetta o violone: I.Adagio
Aria da suonare XIX col violoncello e spinetta o violone: I.Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f77f77c6537b1d3e47ee63c0ce2d9633b73bf4fbe7c989989d247c7d94bcebd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRU622369801.
Le Coucher du Roi: Music for Louis XIV's Chamber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f77f77c6537b1d3e47ee63c0ce2d9633b73bf4fbe7c989989d247c7d94bcebd. 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/FRU622369801.
Cello Sonata in E Minor, RV 40: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876a8c862edd3647ac054e3e15ed9a79ab638cb5f476bc36b58b705ad0108210. 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/FRU622369804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811eaa373065dc793e2eda7190d404f1d4c21b1a10e58749277d3a0f1d1b6980. 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/FRU622369807.
Cello Sonata in B-Flat Major, RV 46: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30dbb36c9cca333ea96eb903494ab53af17c63874678f653b7d27cf382009f0. 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/FRU622369808.
Sonata IV a violoncello solo e basso continuo in D Minore, opera prima: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad35b586b231cbfc9bea140dbb02df9fff0500b86db9551b5c7f5104ec08cd1. 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/FRU622369812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6329a94b807d589be3408d76ce1534a60db9a12da5bfb9a22fae711c8865130. 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/FRU622369814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899c1c7d6847f91732ab47b9927fbf2ef256b2273a1d5d29813b4ad894dd6ad2. 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/FRU622369815.
Trio Sonata in G Major, RV 820: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1170aca62888597a64b852850cbd32d21627273d0bf4a2ae7a4ad70a3cc0764. 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/FRU622369822.
Trio Sonata in G Major, RV 820: III. Allegro - Adagio - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8416f260ccee40be5854f729fef5f5a68b60cc8949699ac9969b588093528f7. 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/FRU622369823.
Trio Sonata in G Major, RV 820: IV. Adagio - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6622902a0db6dfb5edc061f53e6c1fb39d0960557b4bdad50ecf43cbddc2f326. 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/FRU622369824.
Concert Royal No. 1 in G (Version for 2 Harpsichords): II. Allemande. Légèrement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a22c670f438e941b5cc9bdf6cefad06de364f7027db124fc90e9dd35284683. 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/FR7JM2374020.
Concert Royal No. 1 in G (Version for 2 Harpsichords): III. Sarabande. Mesuré
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd487ea651f5cc21be1384498d17ffba40e88d25f00eef2a6f40845a7f95910. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR7JM2374030.
Concert Royal No. 2 in D: IV. Air contrefugué. Vivement (Version for 2 Harpsichords and Theorbo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b33e10433169e63beb77d674f98e4af96dd66502871df25662c50080d8370a1. 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/FR7JM2374100.
Couperin: Secrets de Roy. Pièces de violes