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 0xdfea4a1166a3b0c51e1e81bdd0e73c5fa119b2093b26ca519228a51ff61caede. 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/935937ee-5f06-42e1-8393-6c49a35b7c27.json and https://artists.proofprofile.net/proofs/artist/935937ee-5f06-42e1-8393-6c49a35b7c27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Savane d'Afrique - Natural Atmosphere of African Savanna
Merles et grives - Larger Thrushes (Paysages sonores)
Symphonies de l'étang - Marsh Melodies (Paysages sonores)
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 0x08110255f1415606b5ff9006fb1aecf9febbd03867e2a6cc81f6337cceb64449. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX190735959.
Ambiances de Papouasie (Paysages sonores)
Oiseaux des Alpes - Birds of the Alps (Guide sonore)
Oiseaux d'eau, Water Birds: The Danube Delta & Mikri Prespa (Le concert des oiseaux)
La France : jardins, pré, bocage (Country Ambience)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8d1e8dd1ca921d1c47ca38bab9ba4f37857a92c547341b15077be4d86e435. 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/FRX190901733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa654863ecbc2b8e0ae40df1ea49abacdd06c3805910734ac275291b569af8a72. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX190901737.
Le brame des cerfs (Forêts d'automne / Rutting Red Deers)
Forêts de Pologne - Bialoweja Forests of Poland
Ambiances du Brésil - Brazilian Soundscapes (Paisajes Sonoros de Brasil)
Le monde des singes (Monkeys Primate World)
Le chant des vagues - The Song of the Waves
Les quatres saisons de la nature (Nature's Four Seasons)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2624642103f8ce2ac493afafa628b4c00b3d5b330edc4334065880b4c542ed5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX199400488.
Balades en bord de mer - Coastal Walks (Paysages sonores)
Forêts Maya (Mayas Forests from Guatemala)
Les plus beaux chants d'oiseaux - Birds Great Masters (Les grands virtuoses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c8db63b48de673e2fd21e79382fe1d4dd5fe44e65e48fbf823a7207252d59e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:23:49Z), 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/FRX190735937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85919449b72a4c6dc8f8f6a7b565ea33deca8fa8bb343623c2ddd14ee11430bf. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX190735951.
Paysages de Namibie - Namibia Soundscapes (Réserves naturelles d'Afrique)
Oiseaux des rivages marins - Sea Shore Birds
Les voix du désert (Ambiances sonores / Sounds of the Desert)
Le matin des oiseaux - A Morning of Birds (Cinq paysages sonores de l'aube)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487d897d9fb084c2458d1555b90abc1bf51a94041d002ea89c5eb846f5f960c3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX190731627.
Yutajé Venezuela : Le monde perdu (El Mundo Perdido)
Oiseaux des forêts et des montagnes - Birds of the Forests and Mountains
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7a52c815a22253cae352da2435f11dbd1351d57676c27d18e0768887bf96de. 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/FRX190731868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0998d91f6885b1c2476fcc37f0142b400e699481283ec1f46feff83f6dfccbb. 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/FRX190731873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3935072737b8494b50a67175130974e41c0a343fbaa801b6d682d9bf231164. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX190731933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368a994b4d96bfc43e77c0208f1fcdd5f51fa4aa1caf76fc8dfcfb8a8e921c17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX190731897.
Jours et nuits de Bourgogne (Géographies sonores par Francis Wargnier)
Guide sonore des oiseaux de Paris (A Sound Guide of the Birds of Paris)
Pinsons bouvreuils - Finches and Allies & Co
Marines et marécages de Charente et Poitou (Géographies sonores par Francis Wargnier)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190bc8e7acb84a471db448ac080047d6830cc1a7b30387438c30f26bce49fdad. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX190735389.
Kenya Ornithological (Expédition ornithologique)
Pèlerinage Andalou - Andalucia Pilgrimage (Flamenco & Birds Dongs in the Guadalquivir Delta)
Chant des quatre saisons (Guide sonore / Songs of Four Seasons)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aafb5a75bf073b1610614f5915ed904f757cff37cecd5cd7651aedcc689d04. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:24:56Z), 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/FRX190736549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193dced22f789b72003bc6dacd13662242a2a7599d0aec61f44b8594ba820171. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:23Z), 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/FRX190736560.
Les oiseaux du printemps - Birds of Spring (16 concerts naturels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d221106ddec07930edba35bbd01c3c0c29b0cf0e0e49a341f17c49a75e370a6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRX190731695.
Les singes forestiers - Monkeys of the Forest (Le monde des singes, vol. 2)
Au pays des grenouilles (Guide sonore des amphibiens / Frog Talk)
Birds from Paris (Soundscapes from Ile de France)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e09c40cee52d1ae5ce5488677fbfbdd825754f5c524b6b24f2d6eb15329b25. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:33Z), 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/FR6V80710113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf091987f8d0324bc9ac0a7b13d8978702d421bd84afa544a06fa601a74ff1b9d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V80710121.
Le monde des dinosaures (Paysage acoustique reconstitué / Jurassic Soundscapes)
Balades aux Antilles - Birding in the West Indies
Paysages malgaches - Soundscapes of Madagascar
Paysages canadiens - Canadian Soundscapes (Sept concerts naturels)
Drôme Concerts naturels / Natural Soundscapes
Paysages sonores de Sardaigne (Soundscapes of Sardinia)
Paysages sonores de Toscane (Soundscapes of Tuscany)
La pluie - Soundscapes of Rain (Paysages sonores)
Oiseaux du Maghreb/Birds of North-West Africa