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 0xb4521a239e104ec2a6102f2dc0b7600f338c4af1fe41638af194ca5a48547ff2. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f3ec66f-3473-4797-8698-a1e2e89bebe7.json and https://artists.proofprofile.net/proofs/artist/4f3ec66f-3473-4797-8698-a1e2e89bebe7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smetana: Bartered Bride (The Beecham Collection)
Vocal Recital: Schwarzkopf, Elisabeth - Verdi, G. / Loewe, C. / Weber, C.M. Von / Mozart, W.A. / Bach, J.S. / Handel, G.F. / Beethoven, L. Van
Walton, Troilus and Cressida First Performance
Verdi, G.: Traviata (La) [Opera] (Callas) (1958)
La traviata*: Act I: Sempre libera (Violetta)
Orchestra of the Royal Opera House, Covent Garden
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 0x92d1d53ff9d25b1f3085a541a91c5d7ec07be5dc7ed083bababc4c628e8bf7fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USB8U1007280.
Singers of the Century: Joan Sutherland – The Art of Coloratura (Remastered 2016)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d9d28cbdbbd039eff56671603edf7f05dec1d06a50dc5aae8b40dc78defb7b. 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/GB6CE1000003.
Così fan tutte, K. 588: Act II Scene 2: Recitative: Ei parte … senti … ah no! (Fiordiligi, Ferrando, Guglielmo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1606c1ef78754da5dba3bcff5297291ef577b545d9038661e9974b19577def1d. 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/GB6CE1000036.
Così fan tutte, K. 588: Act I Scene 1: Terzetto: E la fede delle femmine (Don Alfonso, Ferrando, Guglielmo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0672bc4cc800e41c9b7e720ade1f2f3a82272178cbbf03c5589b6a0e5000d540. 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/GB6CE1000005.
Così fan tutte, K. 588: Act I Scene 2: Aria: Non siate ritrosi (Guglielmo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d6808fffd46a8db5df3981d8032630b34746197870e40200e9a0eeb517c46c. 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/GB6CE1000021.
Così fan tutte, K. 588: Act I Scene 2: Quintet: Sento, oddio, che questo piede (Guglielmo, Ferrando, Don Alfonso, Fiordiligi, Dorabella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04ec9be957fcf63d0dddf32c43af557b6e768270373a656232fbf1a7617d459. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB6CE1000009.
Così fan tutte, K. 588: Act I Scene 3: Finale: Ah, che tutta in un momento (Fiordiligi, Dorabella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe4f3b5930566992b355580dcedd23e33364a86fc86d45dcc179177777b19d9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB6CE1000024.
Così fan tutte, K. 588: Act II Scene 3: Aria: E amore un ladroncello (Dorabella, Fiordiligi, Despina, Don Alfonso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa60676d832932ccefb5530efadc848594df0efd1a4871bad2f01d652f4fd62. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB6CE1000041.
Così fan tutte, K. 588: Act I Scene 2: Recitative: Ah scostati! Paventa il tristo effetto d'un disperato affetto! (Dorabella, Despina, Fiordiligi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da43adb4c83f5b52ac88eb5aa5349efcad906312e3e9b3556f961149854fc18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB6CE1000015.
Così fan tutte, K. 588: Act II Scene 2: Duetto: Prendero quel brunettino (Dorabella, Fiordiligi, Don Alfonso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88153496f631b7476c9c7ffea9bf197711fb9aa64ce92b28aaca2e342fb3df62. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB6CE1000030.
Così fan tutte, K. 588: Act I Scene 2: In uomini, in soldati sperare fedeita? (Despina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93fc0c4e6daa15abc31882f41efc7b52fbbb26362defcf905d80e34b6d33a0c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB6CE1000016.
Così fan tutte, K. 588: Act I Scene 2: Recitative: Che silenzio! (Don Alfonso, Despina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab811ce9755aa87dbe035c33b98190a787bbb73301835998b199ab1e763f5a0. 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/GB6CE1000018.
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
Così fan tutte, K. 588: Act II Scene 2: Recitative: Barbara, perche fuggi? (Ferrando, Fiordiligi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9767d8624e9837cf14f17adb8e1e8f661966946aaf7ea4dd19707c27f8fd21. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GB6CE1000035.
Così fan tutte, K. 588: Act I Scene 1: Terzetto: La mia Dorabella capace non e (Ferrando, Guglielmo, Don Alfonso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824a635328b4bed94f02b78e1c8bf02adea159532c1ee9ec666362bd176c74fb. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GB6CE1000004.
Così fan tutte, K. 588: Act I Scene 2: Recitative: Temerari! Sortite fuori di questo loco! (Fiordiligi, Ferrando, Guglielmo, Don Alfonso, Dorabella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756f1ec1a980777c5e02a71328fecb5a5c78433df439004a071687ae8e2036f0. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GB6CE1000020.
Così fan tutte, K. 588: Act I Scene 2: Terzet: Una bella serenata (Ferrando, Guglielmo, Don Alfonso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d93d2b6539801f8fa6dd99451bcc024832b98d70c1f45457dc96686c3095ec. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GB6CE1000006.
Così fan tutte, K. 588: Act II Scene 2: Aria: Donne mie la fate a tanti a tanti (Guglielmo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4601d57ff970f51145d039bb45605cd3f02a1b12c3004231cb523c7594fd5294. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GB6CE1000038.
Così fan tutte, K. 588: Act I Scene 2: Duetto: Ah guarda, sorella (Fiordiligi, Dorabella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0726cc7e736de77eabc3d76aea06a0c52b9b492b46faf38ed2a03d8d1d30fd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB6CE1000007.
Così fan tutte, K. 588: Act I Scene 2: Terzet: E voi ridete? (Don Alfonso, Ferrando, Guglielmo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d685b0357bb2be37fac90757433140605411fdb98138ef9d4330f89c7407f45. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB6CE1000022.
Così fan tutte, K. 588: Act II Scene 2: Recitative: In qual fiero contrasto (Ferrando, Don Alfonso, Guglielmo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81287bcab0a67a7b4f320d4dc4c5be1e3776d7fe4fbaf8b4e5c64d00f98614d3. 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/GB6CE1000039.
Così fan tutte, K. 588: Act I Scene 2: Aria: Vorrei dir, e cor non ho (Don Alfonso, Fiordiligi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5db975b04fc1bca7c8a01de39cc89f6c89cb489445d0e2256892e88da66e35a. 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/GB6CE1000008.
Così fan tutte, K. 588: Act I Scene 2: Aria: Un'aura amorosa (Ferrando, Don Alfonso, Despina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06d49dc591113621e8e0ce27ac01e8c3b121443e0db1d8459b37e9942d12823. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GB6CE1000023.
Così fan tutte, K. 588: Act I Scene 3: Si mora, si, si mora (Ferrando, Guglielmo, Don Alfonso, Fiordiligi, Dorabella, Despina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357f01197ae432d25561c7b1c548127d1ccdc7306901529b566eb191292e221c. 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/GB6CE1000025.
Così fan tutte, K. 588: Act II Scene 3: Duet: Fra gli amplessi (Fiordiligi, Ferrando, Guglielmo, Don Alfonso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe731ca209aab36d46d0857908368f38a184658abafa7c81c4a851628e31a819a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GB6CE1000042.
Così fan tutte, K. 588: Act I Scene 2: Bella vita militar! (Don Alfonso, Fiordiligi, Dorabella, Ferrando, Guglielmo, chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b7464ec9322e1222fd46cffb13327502e7ae4e0798ba06f3d166d6d48e9852. 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/GB6CE1000011.
Così fan tutte, K. 588: Act I Scene 3: Eccovi il medico (Don Alfonso, Ferrando, Guglielmo, Fiordiligi, Dorabella, Despina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8046c72828f0684ff34e80a423997e55e66cc1bf9bd3430ebc9a767923ccfad. 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/GB6CE1000026.
Così fan tutte, K. 588: Act I Scene 2: Quintet: Di scrivermi ogni giorno (Fiordiligi, Dorabella, Guglielmo, Ferrando, Don Alfonso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b71f3e324604e16b0ec7f03006a79b462467a859d693f48673c7aa115a44936. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GB6CE1000012.
Così fan tutte, K. 588: Act I Scene 3: Dammi un bacio, o mio tesoro (Guglielmo, Ferrando, Fiordiligi, Dorabella, Despina, Don Alfonso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43943050e4686a031d719fe8ce2eb42b0fbaea0ccf13ad1225926274ffd5ef12. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GB6CE1000027.
Così fan tutte, K. 588: Act I Scene 2: Terzet: Soave sia il vento (Don Alfonso, Fiordiligi, Dorabella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe817b5742d442a12ee62841477582542d0626678531b60e8ea26eaafe170b15f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GB6CE1000013.
Così fan tutte, K. 588: Act II Scene 1: Recitative: Andante la, che siete due bizzarre ragazze! (Despina, Fiordiligi, Dorabella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f2b652f168157a5d2ee71b6be8fd864354c339acfd8f1c32046c0db73b4907. 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/GB6CE1000028.
Così fan tutte, K. 588: Act II Scene 4: Benedetti i doppi conjugi (Fiordiligi, Dorabella, Ferrando, Guglielmo, chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806128490eeaaf74106e314dd1f3aba99628ea1d91f1d638f24b5844dff98cf7. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/GB6CE1000045.
Così fan tutte, K. 588: Act I Scene 2: Che vita maledetta (Despina, Fiordiligi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaa02a0598b1b68883afe0eb7c65c34f4550325c05efe6c1296a9b656182850. 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/GB6CE1000014.
Così fan tutte, K. 588: Act II Scene 1: Aria: Una donna a quindici anni (Despina, Fiordiligi, Dorabella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bced906bad2d6a3d73953687efd84509d9e6c1b252cdd2133eb0a78f449d8a. 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/GB6CE1000029.
Così fan tutte, K. 588: Act II Scene 4: Miei Signori, tutto e fatto (Don Alfonso, Fiordiligi, Dorabella, Ferrando, Guglielmo, Despina, chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ce6d3493752a1f272f9f1dc04803077fc203977c05830ef2ef6a56d1a1c39c. 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/GB6CE1000046.
Così fan tutte, K. 588: Act II Scene 2: Duet: Secondate, aurette amiche (Ferrando, Guglielmo, Don Alfonso, Fiordiligi, Dorabella, chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b61b78536a65a81d6449eada57a9b2b6eb3cc3f74314e9bae800b618b4b4d0. 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/GB6CE1000031.
Così fan tutte, K. 588: Act II Scene 2: Quartet: La mano a me date (Don Alfonso, Ferrando, Guglielmo, Despina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e45e50e19b2042e68c728f36ac1245b78a2b3a67cc08ffbe18eb62ef8a0a9f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GB6CE1000032.
Così fan tutte, K. 588: Act II Scene 2: Duet: Il core vi dono (Guglielmo, Dorabella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450ed07d1ca045b8be2e2cc3294655b9dceaac7000eb16abbff7d8148dd65eab. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GB6CE1000033.
Wagner, R.: Tristan Und Isolde (Melchior, Flagstad, Reiner) (1936)
Wagner, R.: Tristan Und Isolde (Furtwängler) (1952)
Wagner, R.: Walkure (Die) / Gotterdammerung (Excerpts) (Furtwangler) (1937)
Delius: Orchestral Works, Vol. 3 (Beecham) (1928, 1938)
Wagner: Der fliegende Holländer, WWV 63 [Recorded 1960]
Beethoven, L. Van: Fidelio [Opera] (1947)