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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2639b78513279d6e7a2a7a333e7c6124e8f74e4af00ae1e51deda638eb48dfc. 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/1f4e8889-8b57-480d-8011-abe3b30e3f7f.json and https://artists.proofprofile.net/proofs/artist/1f4e8889-8b57-480d-8011-abe3b30e3f7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf609345d356e12ffc567e7cc48f8474711082948651fb4df9ef978435ff725a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRZ052100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c721cb9eb68e5d7970df2488d2257a4160a9f116972045ed35fb018b350ad03. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRZ052100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad1ed37f006363ea6237d1830d55a8457227793b5194bb0df4acf9a629a2f13. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ052100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d704fb66056974561c00f45d4825b1eb12762965bd6d5c95729c7d8a136a8c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ052100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6163a08aca8ae0db8b385c3165c6175c6160dce0ed47095061a3204d8aba5470. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ052100170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f03ad9719f431821bce0348bb1af3e20b387b09b2c31520a26bccc29c8ea6f9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ052000538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bf44c65e71d9fe5a541a5ac7421953279b5b0f9382ad5ac80dba46feae2643. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ052000549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010d5766cb9bf4f8292a15315ae169c7565a412fd3304949d1894b6ab2f0de1d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRUM71600401.
Musique classique pour travailler, lire, dormir
Jazz Piano French Touch - Terrasson, Herman, Enhco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fea7f2b15c7ffb87e999485962a4fd6144f0425457bb569b19dbbd09229d6e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN20200444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a435933f104ed0d7c847e3255ae56e797afe1d2a779391dac2a2df7d49bd04. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAYC1702554.
Piano relaxant : Le meilleur du piano classique
Delibes: Lakmé, Act 1: Duo des fleurs (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1f168a778c7165c62eada37ebce0d08d5544ca4be48941bddc7992ae4aae4d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYC2401168.
Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
String ensemble of the Orchestre National du Capitole de Toulouse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc7309b3c33d0e993730add01fa3e94542e38e903b2d68053e402d8fab0a39e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC1902475.
Elle & lui et le reste du monde (Bande originale du film)
Un Mondo in Più (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36da444e564dfdf9dc0e92cc942bfb42c6a1caa7126b10d4bc5f036e0ed63097. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRZ052200639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e68a98acdd845401af7de8b332ace07a0e13fc4c8a2b0ab2a805645c0a2c80a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRZ052200645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39f844466233c9b0149cc64f0703bdfab9f3577fa157fa438b90586c9f71708. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12041594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c49980345ccf758316ba942af2ed2e8f56ea7e80a119e4c7b2b41d3a92cc9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12041596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5ef9b67b405eb8becf1dcb6533a5ee4fb7d753f7e1b797d278c7bdad6eda2d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12041602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab68463f2554739ff58e0d8e437c58e57074874b37fc0c0fa0d4c1b612547e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12503837.
(You Make Me Feel Like) A Natural Woman [Live]
Thirty - EP (Excerpts from Concerto for Piano and Orchestra)
Temps Calme : Musique douce pour enfants et bébés