thumbnail|First page of a 1690 manuscript copy of the musical score for the Ballet Royal de la Nuict, part of the Philidor Collection at the Bibliothèque nationale de FranceLionel Sawkins in Burden &
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 0x8426d5b95e0cf547631157d6c75692b8783b6111618b60bd14e3e2dc3b5ad934. 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/55b182c7-5096-4a36-917d-7bf1a099916d.json and https://artists.proofprofile.net/proofs/artist/55b182c7-5096-4a36-917d-7bf1a099916d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le Concert royal de la Nuit, Première Veille, la Nuit: "Languissante clarté, cachez-vous dessous l'onde" (la Nuit)
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 0x366dd69a9cacbc275ee3f89fb2918949f8640ec6a52aa7e781e86284774fef69. 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/FRZ141504020.
Le Concert royal de la Nuit, Première Veille, la Nuit: Entrée pour les Quatre heures - 2e air pour les mesmes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590937857c26d38758c098b4a6cb683664679e8e818cc29bedc782f64fa37545. 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/FRZ141504060.
Le Concert royal de la Nuit, Première Veille, la Nuit: Deux Galands & deux Coquettes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492980a8c5116bd2235dafa34d5da77c2dca8797d194d6b9fa4241b0fcee0f1d. 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/FRZ141504100.
Le Concert royal de la Nuit, Première Veille, la Nuit: La Cour des Miracles. Egyptiens et Egyptiennes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dccd836f2cd2514895df7637d94d9da3735a097ca45513d5635d87c68531d5e. 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/FRZ141504120.
Le Concert royal de la Nuit, Troisième Veille, Hercule amoureux: "Dormi, dormi, o Sonno, dormi" (Aure, Ruscelli)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f12d287145b337d1e7955a052c50de91b5ba71e6437cdf2f1c7a0e25a567267. 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/FRZ141505120.
Le Concert royal de la Nuit, Quatrième Veille, Orphée: Dialogue du Sommeil & du Silence (JC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48378d5cefde95eed1623b20ea73f337b58fe91da830c9b1327ad725337a0ff. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FRZ141505150.
Le Concert royal de la Nuit, Seconde Veille, Vénus & les Grâces: La comédie muette d'Amphitrion, Quatre petites Espagnolles et un Espagnol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4bf0df490a909104f89df69aa60fd950110e2e555fce8ecf9c7fd7d4e8621d. 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/FRZ141504240.
Le Concert royal de la Nuit, Troisième Veille, Hercule amoureux: "Moy dont les froideurs sont cognuës" (la Lune)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc48ec92f043206ac18d7f540cd22c3fdc030aff394ff7c06bc305341e18c1e. 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/FRZ141504280.
Le Concert royal de la Nuit, Première Veille, la Nuit: "Vous poussez le Soleil à bout" (Les Heures)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b7cc8deafc7d2bcfafc0c11b535dce8ac5a5510ac53004bdba5ebb6eb34c97. 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/FRZ141504030.
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
Le Concert royal de la Nuit, Première Veille, la Nuit: "Je descends pour charmer ses yeux et ses oreilles" (la Nuit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072db01c4ed07debab3047c20950619d7e8b603dbbf990a3106f5ca6033741ed. 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/FRZ141504040.
Le Concert royal de la Nuit, Première Veille, la Nuit: "Tenez donc vos rideaux tirez" (Les Heures)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e6012b080a9b6b980e47bda9afa0496a52d0c8f94f8858c026cc1aa539ef20. 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/FRZ141504050.
Le Concert royal de la Nuit, Seconde Veille, Vénus & les Grâces: "Fuyez bien loin, ennemis de la joye" (Vénus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a85921c5c00fa35f41fd4317add3ed4200dd31c8fbd1aed91948a45a371ba0. 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/FRZ141504170.
Now That the Sun Hath Veiled His Light, Z. 193 "An Evening Hymn"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fe71c038179021bb0ab10231f678203d4d9771ffb1338d8e2eea4917d9ca1c. 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/ES17B2400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8d8f67ae0578a557dedd6618351ef85becb534a917d7d7e1e22c708c76179b. 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/ES17B2400879.