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 0xb3a4485bd72a4bc77a6df47ecd8aa380edab8af45123b289ef6e5d0f65102ee6. 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/1957370f-5715-4358-a90d-75963988ac9b.json and https://artists.proofprofile.net/proofs/artist/1957370f-5715-4358-a90d-75963988ac9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musique Classique Pour Les Enfants (Piano)
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 0x0d77d2dd3623b6761644642567d704b967d4e4b4798ab6eacda3fc37a4170409. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLGM11944780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43575fca43993ed32214c2a4f1623dd8c9277341083496a5c7a3169885169768. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/NLGM11948688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa07421b338843849a44c3c8a95817f69f0b7c0cb01c9cb8b47efe3d6fa93eb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLGM11948680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aadc1ea1726a4be1cd796c359f43581cb99db3e6f45d717c5d6491490e43a36. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLGM11948681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb178d39c67e1f816ffd8b5d61c1c68b3dbe8a9884b2b32c7dd2b57d183ffa08d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:34:41Z), 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/NLGM11948682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d97c4910bfbbf48beaf1968efba58ef6969429c9f002d9ac27affc5becf845. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/NLGM11948683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc7fb56219f2a290ed5d23741024d8dcf0d0564fa59f9fbf9ef18ea29c9b43. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NLGM11948684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d3866d42ce0c8f2f086cee222ab0cd21d1832a05a750b6a915077f61f5ada8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:38Z), 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/NLGM11948687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2471df01d5a509782720636518488535b38b4a01e3f03464eb6047e30928500. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLGM11962695.
Musique Classique Pour Les Enfants (Harpe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb37809b6f4ca409e3dfe7562c1d4949d2c919cc5b7e414e72027fd45d54038f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLGM12017664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fedabd97dc1b843972cba4a7be2086f10b068ea4982886fc418b9d3644a3c4. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/NLGM12018462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122d5e2a0cceaf00bda0d1cdf29a5abc957d837851f6e1f0b0dfefa370f3c0e2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:01:26Z), 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/NLGM12030623.
Piano pour Enfants - (Klavierstücke für die Jugend) - R. Schumann
Notebook for Anna Magdalena Bach (Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ec6429fc8942a9fa4576be05bc77687c1a2fdd6fdd7b8598a0833fae410db5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLGM12031632.
Chansons de Saxophone Classiques pour Enfants
Album For The Young (After Schumann) [Piano]
P. Tchaikovsky - Album For The Young (After Schumann) [Piano]
A. Khachaturian - Album for Children (Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc54553d5bf53ab02b693eef65402d4f97992fa561690df6216503abdbf6439. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:25:17Z), 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/NLGM12135850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c9aab728165c847f8fc8b31e64cdf1fb563f54f052886a51d3578d2859b70. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NLGM12135875.
Ma Mère L'Oye - 1. Pavane de la Belle au bois dormant
Liebestraum (Love's Dream), Nr. 3, Thema (8va)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f12455f60933df5fb7be3cc0dc87682c258d7c01aaea7ef1e3e9fff45c6708. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLGM12133555.
Forellenquintett (Quintet of The Trout), Theme from the 4th Movement
Mozy et la flûte - Chansons pour enfants, partie 1
Mozy et la flûte - Chansons pour enfants, partie 2
En Voyage avec l'Orchestre - La Mandoline
Mozy et la clarinette - Chansons pour enfants, partie 1
Mozy et la clarinette - Chansons pour enfants, partie 2
Voyager avec l'orchestre - Le Quatuor à cordes
En Voyage avec l'Orchestre - Le Hautbois
En Voyage avec l'Orchestre - La Clarinette
Les Harmonies des Fêtes par Maestro Mozy