thumb|Royer composing his opera Zaïde (1750, Jean-Marc Nattier) Joseph-Nicolas-Pancrace Royer (12 May 1703 – 11 January 1755)"Royer, Pancrace (1703–1755)", Notice de personne, BnF. was a French Baroq
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c2cd8b7aaf15058821ada918377d02ac7270b52a7acd44fb5ba7eaf35de7c7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/681ed43d-9411-440a-8510-232c6125b6dd.json and https://artists.proofprofile.net/proofs/artist/681ed43d-9411-440a-8510-232c6125b6dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pancrace Royer: Surprising Royer, Orchestral Suites
Le Pouvoir de l'Amour, Prologue: Ouverture
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009c3e5bd711e2a0327ba65e57a28d6e3bb6f0ea2a193e30a398535f1d56267b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/FROV62129801.
Le Pouvoir de l'Amour, Prologue Scène 4: Air pour les jeux et les plaisirs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0d1f35bdf9c05d20a2340dfa336ba6335d9f9c06e31b398452d152a0fe135c. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/FROV62129802.
Le Pouvoir de l'Amour, Première entrée Scène 1: Ritournelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6e35016a710a317ba8b17fd2a258faa3813602fad7e278362a376c3dc6439a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FROV62129803.
Le Pouvoir de l'Amour, Première entrée Scène 7: Mouvement de passacaille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4ab8b9e3da6ea004a1a5d16b74f42e2351c133b252c0e17af151a9aaac0138. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/FROV62129804.
Le Pouvoir de l'Amour, Deuxième entrée Scène 1: Ritournelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28946df96782cefdc90a9109ff721a76cea4d1ac313863316d2ee9c5ae956fb. 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/FROV62129805.
Le Pouvoir de l'Amour, Deuxième entrée Scène 2: Rondeau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1a76576b23d773ccdceadbdaea533c7b7af2fa97849aa9080045a79b0e1b8c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FROV62129806.
Le Pouvoir de l'Amour, Deuxième entrée Scène 2: Chaconne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177dbec720fa4ffc3ee9ec4b6e31684000f97f21579c3cd558bca6770daf6b67. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/FROV62129807.
Le Pouvoir de l'Amour, Deuxième entrée Scène 7: Entrée pour les habitants du Pactole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe481a2e5b1a9cb8567f3c93b3adc3eafafd9d10d17b878e64d93df2484f0ecd0. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FROV62129808.
Le Pouvoir de l'Amour, Deuxième entrée Scène 7: Premier et deuxième tambourins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4ab522221188e81d783e51a68d9280958aae622ed5480dbae0569a9f754815. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FROV62129810.
Le Pouvoir de l'Amour, Troisième entrée Scène 1: Ritournelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ed7356ed3f210c109740c08fc633aec348d41aece3d60c47b10738bc8f91c9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FROV62129811.
Le Pouvoir de l'Amour, Troisième entrée Scène 2: Marche pour le sacrifice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eba96e31c5d729c6ab0bd1fe39af4d5601aa756d68fa5b1f414ea843eab306. 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/FROV62129812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb636d528084b42efe2534b6e7a73a2e4d12eaf55fb2250a2d7d4bc6c49214556. 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/FROV62129816.
Zaïde, reine de Grenade, Acte III Scène 5: Air pour les Turcs, en rondeau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7b10ccbca5e10dae6f8d58f1abeec2aee690c38fe9638d146ed4a3568bfcab. 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/FROV62129827.
Zaïde, reine de Grenade, Acte III Scène 5: Premier et deuxième tambourins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbada1cac0222925033700938fe2f6cce3973e1c69239a3ae1239adcca9f0f68. 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/FROV62129829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1820705fe7b78b313c0d95d435bc34122c9a4cfafb4a6d5563753de3ec9be857. 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/FROV62129830.
Pièces de clavecin: XIV. Le Marche des Scythes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31090f1b8a7c975710d9ed7e95957890f0735882a53ca1ca10bd85a8ba36d25f. 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/DEE862301377.
Pièces de clavecin: IV. Tambourins, Suite des Matelots
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ddcfb47517bf4b34a4d19d2d603d14d7ee724a4152ac80a158c16cbde9f732. 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/DEE862301376.
Royer: Premier livre de pièces de clavecin: VI. L'aimable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbe7693ecd7284c7537c04c0dd2be10569c31f64c895969a2cb4b42d04ba934. 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/GBAYC1900676.
Premier livre de pièces de clavecin: VI. L'Aimable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbe7693ecd7284c7537c04c0dd2be10569c31f64c895969a2cb4b42d04ba934. 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/GBAYC1900676.
Royer: Premier livre de pièces de clavecin: XIV. La marche des Scythes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e27ceeb127c40876009c041e952ff83b0f5caccfa53b782d82cfda0d6b2c45. 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/GBAYC1900679.