Roberto Alagna (; born 7 June 1963) is a French operatic tenor. He obtained French citizenship in 1981, while also retaining his previous Italian citizenship.R. Alagna, Je ne suis pas le fruit du hasa
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 0xa51e0a98433b9abb263d07e159a29fddcd428ee54fe74e2393659509fb59fc1e. 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/8f5635e1-1544-47b4-9e37-3b2da6199439.json and https://artists.proofprofile.net/proofs/artist/8f5635e1-1544-47b4-9e37-3b2da6199439.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orchestre National Du Capitole De Toulouse
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 0xe43c6aa678a5240993d587403aab13eccd60fbbf84e4cb3fac428a903070ac7b. 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/GBAYC0203206.
Bizet: Carmen, WD 31, Act 1: Habanera. "L'amour est un oiseau rebelle" (Carmen, Chœur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2681fd9855a3606f2fd4614f1806224bd6f391545d2e069f41f0e488dbd59e4c. 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/GBAYC0203220.
Bizet: Carmen, WD 31, Act 2: Chanson bohème. "Les tringles des sistres tintaient" (Carmen, Frasquita, Mercédès)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e44f8e70e90a84d38d29fc173c22cd7a0414b0244470917b62b158d997ad22. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC0203235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25700b707b95934de956279933b95f3a553092f9f7331f7ea689009327332b70. 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/FRUM71601955.
Les 100 Plus Beaux Airs de Roberto Alagna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674bb57f6ef6b62f44f51bd65019c0266404f55925cd70f561bb84c1977b673. 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/FRUM70801593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674bb57f6ef6b62f44f51bd65019c0266404f55925cd70f561bb84c1977b673. 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/FRUM70801593.
Roberto Alagna chante Luis Mariano - Edition spéciale
Mexico : Roberto Alagna canta a Luis Mariano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd547f8b745196cae87caf01b8bf491df5c67df61f3984f6a0dc53da84fec12a3. 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/GBAYC0102328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9c557745e8914f25c96cc128ddd855aeee8298caa3184cf3c67d5bbcd832fd. 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/GBAYC0102329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6429f1f2d2defa5fe794945f76b7b92ce02c0257c15902fcb56bba1fc21c33a0. 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/GBAYC0102346.
Gounod: Roméo et Juliette, Act 3: "Ah ! Jour de deuil et d'horreur et d'alarmes" (Roméo, Le Duc, Capulet, Stéphano, Benvolio, Chœur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fdbcf8a3436fca73859d0fa4eb9adc42ad87c9716d6794bf893a3cbe45dc75. 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/GBAYC9500072.
C'est Magnifique! Roberto Alagna sings Luis Mariano
Le nozze di Figaro, K.492 / Act 2: "Voi che sapete"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85da1a23932cc5fb5db5e47cbb6d91c31638af43c468544d81bf7c9f8bc784bb. 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/GBAYC1002811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674bb57f6ef6b62f44f51bd65019c0266404f55925cd70f561bb84c1977b673. 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/FRUM70801593.
Donizetti: L'elisir d'amore, Act 2: "Una furtiva lagrima" (Nemorino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f078e15424d95ccef091070b7c90495086b7d0d0d95f43d6f8200c53ab47371. 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/FRZ209299991.