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 0x87a8fa8dc869240018b1c98f59c603f94ce6cd0abee445b18e699aecc073cf73. 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/7f88cbbd-b038-4ee1-b96a-9e28d19f57c9.json and https://artists.proofprofile.net/proofs/artist/7f88cbbd-b038-4ee1-b96a-9e28d19f57c9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Tango : The Most Beautiful Dance Lounge, Vol.1
Paso Doble : The Most Beautiful Dance Lounge, Vol.1
Foxtrot the Most Beautiful Dance Lounge, Vol.1
Charleston the Most Beautiful Dance Lounge, Vol. 1
Salsa : The Most Beautiful Dance Lounge, Vol.1
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 0xbb4cc929a1de9a3d0305b66c5a503ca62d2b31c81ccfcf745383ed1123c7e174. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80841244 — a six-check JSON result.
Quick Step : The Most Beautiful Dance Lounge, Vol.1
Waltz : The Most Beautiful Dance Lounge, Vol.3
Cha-cha the Most Beautiful Dance Lounge, Vol. 1
Waltz : The Most Beautiful Dance Lounge, Vol.1
Best Of Dance, Tango, Paso, Bolero, Rumba, Vol. 5
Best Of Dance Tango, Paso, Bolero, Rumba, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e870ca6fdd22866f144be8b69222ef055ad719560c3bcca0498df155f41dfc. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81039401 — a six-check JSON result.
Madison The Most Beautiful Dance Lounge, Vol.1
Bossa The Most Beautiful Dance Lounge, Vol. 1
Boogie Woogie The Most Beautiful Dance Lounge, Vol.1
Paso Doble: The Most Beautiful Dance Lounge, Vol. 2
Rock'n Roll: The Most Beautiful Dance Lounge, Vol.1
Paso Doble: The Most Beautiful Dance Lounge, Vol.3
Tango: The Most Beautiful Dance Lounge, Vol.2
Bailes de Salón : Cha-Cha-Cha - Los Mejores Bailes (Ballroom Dancing)
Bailes de Salón : Quickstep - Los Mejores Bailes (Ballroom Dancing)
Bailes de Salón : Rock 'n' Roll - Los Mejores Bailes (Ballroom Dancing)
Bailes de Salón : Salsa - Los Mejores Bailes (Ballroom Dancing)
Bailes de Salón : Bossa Nova - Los Mejores Bailes (Ballroom Dancing)
Bailes de Salón : Vals (Los Mejores Bailes, Ballroom Dancing)
Bailes de Salón : Bolero - Los Mejores Bailes (Ballroom Dancing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6caa6a6e376915f12c0a71bba864bfa62ca13352f834da57e5183219d463fd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80356114 — a six-check JSON result.
Danse de Salon - Le Meilleur de la Danse
Ballroom Dancing : The Very Best of Dance, 28 Hits
Piano Bar Music (Drink, Cocktail and Relax)
Piano Bar Music (Night Ambiance and Relaxing Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf286810fd0714bd357e207790bdca3ae045d8926e320fbf41b9794242137504. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80199164 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be6c75ddae9ed08a1db2df8989e92a3709c19abb9945295669a757525580aca. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80199166 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42da68e6b96d3484222ab6929f20ef5eeb8ef2dd5f8020b8349fd655c87855d1. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80199167 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785021c72d2b39d2174f34c9e96affe3d6e4ec2650b56536aeebb7bf4136cd87. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80199169 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c792337018fcff984ab1f5605a81717ab0fa45f5384faae2d5a1a7a1df50cd5. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80199172 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4805f763c932ad8eb626803c9790b9d3e2b8ab4bd893d18050284be072abe204. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80199173 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e7e410f9a77ca9beeee5ceba8862629d9c476ae47251fe7af5ca304b67f9ce. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80199174 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c95294715e5defc28a56f38110ceee741fc9cf7cb63d75868772b5ddfd1903. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80199176 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038e0ad89a0140d173dc07043199194cd763e5e2eb4f36420b427fa220d30159. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80199179 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234b069c15d084fe5a99fa220f783a39310daab1da33a618fa9c19b3fe431890. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V82045705 — a six-check JSON result.
Les plus belles danses de salon (École de danse)
Je danse le Madison (Les plus belles danses)
J'apprends à danser le Rock'n'Roll (Les plus belles danses de salon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143d14259cf9694c4c97e4dec9f39ead6b97328be070aaeb310168110fbf0e30. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V82045183 — a six-check JSON result.
J'apprends à danser le Slow (Les plus belles danses de salon)
I Love the Most Beautiful Dance (School of Dance)
The Most Beautiful Dance (Dance Forever)
Je danse les plus belles danses de salon (Les plus belles danses)
J'apprends à danser le Paso Doble (Les plus belles danses de salon)
J'apprends à danser le Cha-Cha-Cha (Les plus belles danses de salon)
J'apprends à danser la Salsa (Les plus belles danses de salon)
Ballroom Dancing (The Best of Social Dance)
Les plus grandes musiques du cinéma muet (Lounge music, Piano Bar, Relaxation, Musique de Salon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2889d094ccf86ce91c2335cf3b0d1eca2493de97b25cea73150a2a3c142cbf8f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V82312906 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5867a00d483c5ccaf11ac700b8c96729bd67d0b53ba2178fca3b015a8a113957. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V82434184 — a six-check JSON result.
Danses de salon pour débutants (Les plus belles danses de salon)
Romantic Saxophone (Ballroom Dancing) [Music for Relaxation]
Les plus belles danses de salon: Bossa Nova
Les plus belles danses de salon : Paso Doble
Les plus belles danses de salon : Marche
Les plus belles danses de salon : Valse (Les plus belles danses)
Romantic Piano (The Very Best Love Songs)
Piano Bar (The Best Of) [Famous French Love Songs]
Ballroom Dancing: Rock and Roll Dance (The Most Beautiful Ballroom Dance)
Ballroom Dancing: Foxtrot Dance (The Most Beautiful Ballroom Dance)
Ballroom Dancing: Swing Dance (The Most Beautiful Ballroom Dance)
Piano Bar: The Best Of (Romantic Love Songs)
Piano Bar: Love Songs (The Very Best of Love Songs)
Ballroom Dancing: Samba Dance (The Most Beautiful Ballroom Dance)
Ballroom Dancing: Tango Dance (The Most Beautiful Ballroom Dance)
Ballroom Dancing: Salsa Dance (The Most Beautiful Ballroom Dance)
Ballroom Dancing: Bolero Dance (The Most Beautiful Ballroom Dance)
Ballroom Dancing: Bossa Nova Dance (The Most Beautiful Ballroom Dance)
Ballroom Dancing: Cha Cha Cha Dance (The Most Beautiful Ballroom Dance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a387fdc3f699f067e50bc1455fd362999efdf7526df09f27e7f26aad181d51e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V82510024 — a six-check JSON result.
Ballroom Dancing: Paso Doble Dance (The Most Beautiful Ballroom Dance)
Ballroom Dancing: Rumba Dance (The Most Beautiful Ballroom Dance)
Songs and Music for Crying (The Very Best of Sad Songs - Tears and Crying)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0796d84488f901282ff7ed27cd02fabb5d7c6d20f939b76ea36151c3b21af6e1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201511925 — a six-check JSON result.