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 0x3d586fb7b4955641955bc4402601b11a1639e0cccbbaf8b2cd9292994e8e7a6b. 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/7abd5740-a8a2-4911-879e-4eee2d323f39.json and https://artists.proofprofile.net/proofs/artist/7abd5740-a8a2-4911-879e-4eee2d323f39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Airs à deux parties: Sarabande. "Le digne objet pour qui mon coeur soupire"
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 0x25d49e0f6b7af4de32d38e58606bd5c7d1f174566f8decbd181806597f6142a2. 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/FR50X2203501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e2322ee707cae037cbedfd0b993fcf6e0c5d5e8e4295245587a0ce54f94a4. 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/FR50X2203502.
Recueil de plusieurs belles pièces de simphonies: Bransle de Mr de Luly / Bransle guay / Bransle à mener
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6b90169b5cdae407d9367537c3fb603f71a635f5e222143e16595bb02d548f. 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/FR50X2203503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48213b405f23b2d1054489cf2e6889640431ec1cd88e1aa6744ba7b6db70c27f. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FR50X2203504.
Pièce de théorbe et de luth: Gavotte / Manuscrit Parville: Gavotte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a960609785023813921484555e2f2f43ad154d97fcbd0d31778b41f13fe537. 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/FR50X2203505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a403147b68ae2b286e8b2f73bc3f4677535c75c97510517393205880721d0f. 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/FR50X2203506.
Courante "La belle homicide" (Arr. for Lute by Charles Mouton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f1f1ac9d17701b1315bacfa82b75897f15f480ece39f314ab5759a60171abd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR50X2203511.
La grotte de Versailles, LWV 39: Dans ces deserts paisibles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c38696053d88c5fb3db319449704938d173642f1ef4621c44b0fb43493f6277. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR50X2203514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94cad2d1b7f562855de39233bdf4a6f5d6438c04325f849e70c5ed243834986. 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/FR50X2203516.
J’avois juré l’autre jour / Acis et Galatée, Prologue: Rigaudon / Suitte du Rigaudon / Double du Rigaudon fait par Mr Couprain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c534737cb5db2c6a80282adb484d5cd1f2a3ae42f540468d9715aec7ed0a8d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR50X2203517.
Bertrand de Bacilly: Pour une bergere infidelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48213b405f23b2d1054489cf2e6889640431ec1cd88e1aa6744ba7b6db70c27f. 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/FR50X2203504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6775ba1b8a568aaef45859e40a353eb833824be4768a151fbdd13a293a16218e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FR50X0611502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f31d8d4ef0e22130b8cdbea9f1c3d81a045c3687252e9d1e7a2ce52a2dde01. 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/FR50X0611503.
La Magnotte / La petite Jeanneton / Les 6 visages
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0ecef4630a76d8e4a37b91432fbe33c760459893a883d73b4c9d39ff19b1fe. 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/FR50X0611504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1495dfabb25e1ff1eb84079706049151905e786b5374c92328985b1a10f8a4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR50X0611505.
L'amour m'a fait un beau présent / Je me levé par un matin / Malbrough / La Mississipy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f373b67ade439131530e2292a12fdfc1e393b8602e070ad62943a2552968055. 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/FR50X0611507.
Ballet de village No. 4 en Sol Majeur: Rondement / Gaiment / Légérement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2391f5dbdbf8772b593321fd02050a49872ac1bde4b01d572b57ba9d6cc8b025. 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/FR50X0611509.
Ballet de village No. 4 en Sol Majeur: Doucement / Mouvement de chaconne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddda279a8df934a8b2c1e3af5262f80b0cda1320d8f59ea34c8047b8d981f73a. 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/FR50X0611510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b7b4aaa1eae0ac43bdccaa8f038b3a3f0fdada29ff94176dbdc064ef0a1d4b. 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/FR50X0611511.
Musette des Fêtes d'Hébé / À l'ombre d'un ormeau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a1f132dd7f592335baff7113975fb413a426b43679e3f089ab0933c1a352cd. 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/FR50X0611515.