thumb|Delalande is portrayed wearing the insignia of the order of Saint-Michel, with which he was conferred in 1722, but his features appear much as they were two decades earlier. 220px|thumb|Michel
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 0x7b4fd4aac551d4a9ae9165a22c5304cb3c4b70da475ae6efa36cce710afcf0a8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8112ce78-985e-4119-a839-e036966f7e6e.json and https://artists.proofprofile.net/proofs/artist/8112ce78-985e-4119-a839-e036966f7e6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Destouches & Delalande: Les Éléments, S.153
Les Éléments, S.153, Prologue "Le Chaos": Sarabande et deuxième air pour les suivants de Vénus
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 0xa4f080f9132d3de02da2bef8ab8195a84f926b0ba9619ffbb1f90e4faaec69de. 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/FRZDG1401120.
Les Éléments, S.153, Acte I "L'Eau", Air pour les Néréides - Acte I "L'Eau", Air pour les Divinités
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d70a8898d9d873ec756ba4ec0287cfb4e5d05a8b0d06f217e5351d18204a95. 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/FRZDG1401128.
Les Éléments, S.153, Prologue "Le Chaos": Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1374aff98fffc300ceb9c661f6cfa7b9bec5afa9e1a8adc4e573cbe9adf69ab. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRZDG1401117.
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
Les Éléments, S.153, Acte II "L'Air", Air pour les heures et les Zéphirs (Passepied)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1327c320bc72a453b0f61641ee5ac6c9cc8e63b832f548a93e28100f14e7ec1e. 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/FRZDG1401133.
Les Éléments, S.153, Acte IV "La Terre", Chaconne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dd8193287c49b61de2623c069f29e9a782ce94093830de92de36c2f764e7cd. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FRZDG1401148.
Lalande: Les fontaines de Versailles, S. 133 & Concert d'Esculape, S. 134
Les fontaines de Versailles, S. 133: Ouverture
Boston Early Music Festival Chamber Ensemble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49436446122ff6a81cc8c50d28e362ebcd2b7bb3bf19aa6d517aff0a0506663e. 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/DEB201909701.
Les fontaines de Versailles, S. 133, Scene 3: Chaconne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b0889cb0fff2ad41e9520a704f5d46908607844a0cc439a1f6de230320c916. 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/DEB201909708.
Lalande: Majesté (Collection Château de Versailles)
Deitatis Majestatem: I. Deitatis Majestatem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e0ba05ac0aab7af211559137222ba276e75722e9d21c80a4a4275888b4c607. 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/FR50X1796801.
Deitatis Majestatem: IV. O caro Christi vera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da98e5c6acc6f07a57a49e5dfda3bf2fc6c44daceb9c509e5cfb993c8080c12. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR50X1796804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6064a6452b96b736bc1baf60ddf22e660e2f159718be753ae1fb40c4f14a3e5c. 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/FR50X1796805.
Deitatis Majestatem: VII. Quam dulcis est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd88b05592fcb5b5210ff5c7572f03a2cb33eac40e83ae9d8b503e9bedae65d. 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/FR50X1796807.
Ecce Nunc Benedicite, S.8: II. In noctibus extollite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f98679fd648b98d0190ff16cf7925baa6e7e713251da495bb8ca288fa5900. 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/FR50X1796810.
Ecce Nunc Benedicite, S.8: III. Benedicat te Dominus ex Sion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfb791f59e99a92124f2b7858e0cbcf509200903848a19342d0b8355f55288d. 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/FR50X1796811.
Te Deum, S.32: X. Tu ad dexteram Dei sedes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9bd375d65cff463776e7bcf2adc94efc201072a697cfb72f9ec80314179b8a. 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/FR50X1796821.
Te Deum, S.32: XVIII. In te, Domine, speravi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160a09915cf2edf266010e18c668a126f133e7ed3a83b968fd750782b413e5e5. 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/FR50X1796829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c197b387cbc8ef5a7fed06d66df0b61724b68786b03d19231f179cc0d8f6ab3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR50X1796803.
Deitatis Majestatem: VI. O mentis jubilatio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281db4db20481d0449804e4070385712adbc28b54a3698a56cba921b56a0c725. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR50X1796806.
Deitatis Majestatem: VIII. O bonitatis prodigium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90858d5265c9c056f22c1d99cb4cec675e21523c87002e2a954985393bbe7678. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FR50X1796808.
Ecce Nunc Benedicite, S.8: I. Ecce nunc benedicite Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108bd333e4c5bbbe949747be7876979222e965139d798a2487469faa8a25fe21. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR50X1796809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e5e7121ea9acd7499dd195cf801587223e2256f35f31e81916b08d6a2ebab7. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/FR50X1796812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa448cff8b7d40836f8a2e5b71f53a77a01ae0bb17be98247f7dda2b40e7074b4. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FR50X1796813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8ad46293032d9a1ce4586ed33493545de8c51934c4674af98afc1cf4df4c5. 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/FR50X1796814.
Te Deum, S.32: IV. Sanctus, Sanctus, Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bcd0ee0da2b9310e1a116206ca29c87a09c1a073366422a20c8625a76ea9bd. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FR50X1796815.
Te Deum, S.32: V. Te gloriosus Apostolorum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4233bb56b0ef9616f2a7ac0efb97701e4237cb8e90bf03da2285177e81a1f82. 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/FR50X1796816.
Te Deum, S.32: VI. Te per orbem terrarum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153e386a71efcc504e599563e3055d15b92e629c9dd09b65499c3f3801d106ab. 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/FR50X1796817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aee3e0accaedf3a6b2242a86f47fc877352cd786affbf86be5369da85fa2e7. 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/FR50X1796818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff222a66c9f1faa0d717f06409ba51db43c8d576e8482b9b0bbea871454969dd. 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/FR50X1796819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66faabc4cbdf546f04117100b6d7491a5251ef0622dad72555d9df83aec0ac3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR50X1796822.
Te Deum, S.32: XII. Æterna fac cum sanctis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969fd66b8842114bf731d48cb5c67260cde2c2698d2f588fa89982fa3e09339b. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR50X1796823.
Te Deum, S.32: XIII. Salvum fac populum tuum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5c6a3dfdf8e49e7854668de2735f60f18d6b04c576cb21aed8ff8574a66877. 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/FR50X1796824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae269da6c313ee031f24c20e48ec62aa152679a68ba4daedcd17bee5b3e7b167. 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/FR50X1796825.
Te Deum, S.32: XV. Per singulos dies benedicimus te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb619ef72dbb87f93dfdbc8436e18872d51186d84df8fece19f2a321d329c5618. 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/FR50X1796826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec5e6f9630f64ed8347a9d0918f3cff3882f1a0232bf4707d9ae27cf15cb75. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR50X1796827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b8350d5a5b45761ca01a2855786411f3ac418facb4225117ad9822bf7189b1. 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/FR50X1796828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db955d71b6d6e3350862553c1f463ce77154d8caba5d3ba886cd40859ae7521. 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/ES7891702207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ed41f7a3e7edd8e243a4ff63020cfecc031948282e4a01affb991d7b300683. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/FRZ149028230.