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 0x10cb523245ded40278e6060669e6f04b94addefe8cfe50516bb2413cedd82f31. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0960348c-bf4f-423a-9c8e-a33c8c88e5ac.json and https://artists.proofprofile.net/proofs/artist/0960348c-bf4f-423a-9c8e-a33c8c88e5ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Vie parisienne (Original Version), Act I: Chœur et Scène. Le ciel est noir
Chœur de l’Opéra national du Capitole de Toulouse
Orchestre National Du Capitole De Toulouse
Offenbach: La Vie parisienne (Original Version)
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 0x9043edf333944882851efd20f0b3a6f1ebb689dc6ac61f39f55b801fb2472572. 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/ITJXZ2400404.
La Vie parisienne (Original Version), Act I: Rondeau du Brésilien. Je suis Brésilien, j’ai de l’or
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebff7b56a9a89d03cc8c9e4a35cfe084ca2cb18b9808ecf9d8583c7d0d817ba. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ITJXZ2400413.
La Vie parisienne (Original Version), Act I: Chœur. Paris ! Entrons dans la fournaise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4bb2879e7bae2b840175a19b7a6bc54997ce3ed192517443215c4327b36d8c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITJXZ2400414.
La Vie parisienne (Original Version), Act II: Duo. Entrez ! entrez, jeune fille à l’œil bleu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ed6ae34b5ae8f1128edd07d05324f77febb4650faddd335af8eb98dfb7ac7b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ITJXZ2400416.
La Vie parisienne (Original Version), Act II: Duo (Suite). Savez-vous bien, mademoiselle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204920903174b60d59525696bb5209bc3a7e0cfc2759b25c8dfa3b56ae2fdf3b. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/ITJXZ2400418.
La Vie parisienne (Original Version), Act II: Dialogue. Voulez-vous que je vous prenne mesure ?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b5645db25520066600a525b0ed11912ddd353f23a61eb9020d42fdd1d3357c. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ITJXZ2400419.
La Vie parisienne (Original Version), Act II: Dialogue. C’est entendu Monsieur !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c07232c412570ad6e338e405fd883772be1a69b2432586ad935bbd896b3119. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ITJXZ2400421.
La Vie parisienne (Original Version), Act II: Dialogue. Et qu’est-ce que c’est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16899da04df3ce54d77ca0db160168b2bd54184832c3cd1bbf3e9a6cd10de055. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ITJXZ2400424.
La Vie parisienne (Original Version), Act II: Couplets du Major. Pour découper adroitement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ebb7cf74637de0c85acf03d9004578af36ab3a2d98167e9dd1a6db8bc614e7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ITJXZ2400425.
La Vie parisienne (Original Version), Act II: Morceau d’ensemble. Nous entrons dans cette demeure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946eb3033333d14d55a8f4e5fc2a297b1aa617e0e0a01b3c1d8f3c95d68d8564. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITJXZ2400427.
La Vie parisienne (Original Version), Act II: Entrée des Allemands et des Marseillais. Mesdames et messieurs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1c97e26936498e3a8b6587bbbad68e9573d1b55b0ab1d86108614a8ab13b02. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ITJXZ2400429.
La Vie parisienne (Original Version), Act III: Chanson de la Balayeuse. Sous la pluie, une balayeuse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d60516341be266b46bf114591320fdd10dfa0c50ebb08f38f09c5a28c42b96. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITJXZ2400447.
La Vie parisienne (Original Version), Act III: Pastourelle. Lèv’ra t’y l’pied, Le l’v’ra t’y pas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0e0ef1fc64f4e0c1c4a8740ed04582a517d05d952bd7aad33c9658df021da4. 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/ITJXZ2400449.
La Vie parisienne (Original Version), Act III: Galop. Feu partout
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d9104fec63251077980630c67736dcdbf77fba4834eb3d89561ab4e0e6d854. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/ITJXZ2400450.
Franck: De l'autel au salon. Œuvres chorales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3135ae4c77cd4d1c3cd6a0ef7ba32cfa3312f7e5f9c18cf193c1b8b2861943c9. 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/BEX602022017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b7e0d452965e32f68d442184df23f317bac577dcc125b407c0d030f7dd9d61. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BEX602022020.