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 0x6b771bc09dc9f4e5eb01e1873a19ee566b534d133db9234ca8571d09f78d62aa. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66e54e57-eae7-4f8f-831b-adb7b331acc8.json and https://artists.proofprofile.net/proofs/artist/66e54e57-eae7-4f8f-831b-adb7b331acc8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Xerse, Act I Scenes 1 & 3: Sinfonia - Ombra mai fu - Tutti dormiano ancor dell'alba i rai - Live
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 0xff3db13599b2f6907647fe08e6330d44c091cd608d1661fb8595d13cf71de9b8. 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/HKI192315001.
Symphony No. 35 in D Major, K. 385 "Haffner": III. Menuetto - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9653f332b92f685763a5e57541d29101e66af3677f8460845b17a3b306e4a8c4. 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/DEN960601733.
Symphony No. 35 in D Major, K. 385 "Haffner": IV. Presto - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1781561f873d878a7bee2d7a2c83722ffe38c9871ecb47d589fcc25b2f17c19. 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/DEN960601734.
Symphony No. 29 in A Major, K. 201: I. Allegro moderato - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39eea705b81ff990336dcba7fe055390c133df38663b851c1099740b4c9b0779. 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/DEN960601721.
Symphony No. 29 in A Major, K. 201: IV. Allegro con spirito - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddc260547666eed3364a3b3a23743754342c61eadccb6ecc0302687ab43ffe9. 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/DEN960601724.
Symphony No. 33 in B-Flat Major, K. 319: I. Allegro assai - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37edd336eb0de479cb8540d24341d9abd8315059e4bc226b29a7327b535497c8. 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/DEN960500851.
Symphony No. 33 in B-Flat Major, K. 319: II. Andante moderato - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859712ee27789c565536deafb7348a01daf0bf4a8336cab607fca2e122ba7e85. 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/DEN960500852.
Symphony No. 33 in B-Flat Major, K. 319: III. Menuetto - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cedd2a8dcaa877b60da886e32b64148394b980e8aecdd2f5593adc06ba0801e. 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/DEN960500853.
Symphony No. 38 in D Major, K. 504 "Prague": I. Adagio - Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826aafbdd0b113dc13bde69088d9a34909e6f3768fec39364cb6416283eaeb67. 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/DEN960601711.
Piano Concerto No. 8 in C Major, K. 246 "Lützow": I. Allegro aperto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d861046ce3fc0452fe316003de59d8842de4d13fb6c29b9fa312f265459a1ed. 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/DEF058204221.
Piano Concerto No. 8 in C Major, K. 246 "Lützow": III. Rondeau. Tempo di menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6045c5d23f8611c5c7ac15ab8298cc8b092f0a5b5e4a17ce6fe650f06a30feb. 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/DEF058204223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe2cd211178b34e83568d71dbc83fcda10612846ec793fd5479cf55947ecfa4. 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/DEF059430501.
Le nozze di Figaro, K. 492, Act I: No. 1, Duet. Cinque, dieci, venti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcadbfd1622a3ceb7236616c396a5b098a8d831e4218d279c65a30cd85b12ac. 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/DEF059430504.
Le nozze di Figaro, K. 492, Act I: No. 3, Se vuol ballare, signor Contino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68df9ec90b13e3ae687b7a3a1a477b7291fc5e19f60c5343ef8761942b7774ae. 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/DEF059430509.
Le nozze di Figaro, K. 492, Act I: No. 4, La vendetta, oh, la vendetta!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334c297bcfa9f9dace99502e885a55f6c45eaa7523382c0be627006e78d92453. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEF059430511.
Le nozze di Figaro, K. 492, Act I: No. 6, Non so più cosa son, cosa faccio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb19bfa61ac9bbdc3788312199b2dfd361f1b8febb1828d07c1a27cae0c80d4. 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/DEF059430515.
Le nozze di Figaro, K. 492, Act I: No. 8, Chorus. Giovani liete, fiori spargete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13afb82571e9ef1ca102d7dfeacb1e21aabba2082165a4150636cddc75b7360f. 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/DEF059430519.
Le nozze di Figaro, K. 492, Act I: No. 10, Non più andrai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a5bbffedde28744cd465934706a43b7279db10e88cb59ab1b23f059aaa04b0. 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/DEF059430523.
Le nozze di Figaro, K. 492, Act II: No. 11, Porgi amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8240bf44579caff3709235beda9832acefc4c5b0df1c2b1f840670f02ec233. 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/DEF059430524.
Le nozze di Figaro, K. 492, Act II: No. 12, Voi che sapete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca5506bd8adc49115dfc23afdffcae446dbd1c31804d55a0073e4e413a5dace. 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/DEF059430527.
Le nozze di Figaro, K. 492, Act II: No. 13, Venite inginocchiatevi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbb39edc49f0a8661b73160294fffc57768b96ac1c1f65f11686f5345a48645. 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/DEF059430529.
Le nozze di Figaro, K. 492, Act II: No. 14, Trio. Susanna or via sortite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbc3bedcc33a43272f0201db37dc7e5a7f9012dddb98064a638880fef0ee74c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEF059430532.
Le nozze di Figaro, K. 492, Act II: No. 16, Finale: h-i. Voi signor, che giusto siete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf8ae924489d42fd3bfc812fbbe4ec726c43081ed76fab5ddc9ccf004a2cd9a. 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/DEF059430544.
Le nozze di Figaro, K. 492, Act III: No. 17, Duet. Crudel! perchè finora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1f1ff9e254c94efc47502b2e25b0153040ea8cff95ccd6f6667df975975eb2. 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/DEF059430546.
Le nozze di Figaro, K. 492, Act III: Recit. Hai già vinta la causa! - No. 18, Vedro mentr'io sospiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124e2e5a3ba884d34f298997649bfacc5a07e3fd70b2a729df624ff0bb197625. 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/DEF059430584.
Le nozze di Figaro, K. 492, Act III: No. 20, E Susanna non vien! - Dove sono i bei momenti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0176f8809963a8e6abf42b52a3a685e05633c4783ec2a732214d4e2aff978d6. 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/DEF059430582.
Le nozze di Figaro, K. 492, Act III: Recit. E decisa la lite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156f6ddda3380900919e1a24f3616eec1ebcd229190db871507ef3c2529d81e. 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/DEF059430553.
Le nozze di Figaro, K. 492, Act III: No. 19, Sextet. Riconosci in questo amplesso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880d5b3924b413afac4ae821f3d7a5274858dc8423b90c78d6f78014558e2954. 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/DEF059430554.
Le nozze di Figaro, K. 492, Act III: Recit. Cosa mi narri! - No. 21, Sull'aria... Che soave zeffiretto "Letter Duet"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024a83bb8f24191329e9d2b1c4e959cc0ef1f58a68e19ff823991cd09a91813f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEF059430583.
Le nozze di Figaro, K. 492, Act IV: No. 24, L'ho perduta, me meschina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21189d673ff3d0a85ed12295e067ce06f6348572e4f012ddf603e03e54e4b38. 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/DEF059430565.
Le nozze di Figaro, K. 492, Act IV: No. 27, Aprite un po' quegl' occhi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3c9aafd7219139ac22332da354e7975b680065501e43c1b5a2567db0a88588. 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/DEF059430572.
Le nozze di Figaro, K. 492, Act IV: No. 28b, Deh vieni, non tardar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c296e3909eae06d0cc409114de5ad35664ef49218dd3b984af21a59ca865ba. 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/DEF059430503.
Le nozze di Figaro, K. 492, Act IV: No. 29, Finale: e-g. Gente, gente, all'armi... Questo giorno di tormenti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4f8e8863b9d4e096641844f88977df33f7e421c8141d20bad4c120e96d14c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEF059430579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe2cd211178b34e83568d71dbc83fcda10612846ec793fd5479cf55947ecfa4. 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/DEF059430501.
Le nozze di Figaro, K. 492, Act II: Recit. Tutto è come il lasciai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb04bb66eb0a82c5d987d558d6be6a269a9d01895d8e37cf65a3e6fa36d53ec. 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/DEF059430536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcadbfd1622a3ceb7236616c396a5b098a8d831e4218d279c65a30cd85b12ac. 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/DEF059430504.
Le nozze di Figaro, K. 492, Act II: No. 16, Finale: a. Esci omai garzon malnato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3baa2e27a84122a106dca7a4358b318fe85736700a38838550fe34be09ca209. 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/DEF059430537.
Le nozze di Figaro, K. 492, Act I: No. 2, Duet. Se a caso madama la notte ti chiama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9efafa116d4031cf051c5623aa27e9f86a0f0ec1c21b29d46ecb8d19d2814c. 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/DEF059430506.
Le nozze di Figaro, K. 492, Act II: No. 16, Finale: e. Conoscete, signor Figaro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeee3903b975d027a23736294190c9a88ff3574d99ac1f42e9cdc3271e2448fe. 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/DEF059430541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68df9ec90b13e3ae687b7a3a1a477b7291fc5e19f60c5343ef8761942b7774ae. 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/DEF059430509.
Le nozze di Figaro, K. 492, Act II: No. 16, Finale: f. Ah signor, signor - Cos’è stato?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa684623fe4d16d6c2625baaea6e3cb23d05438e93dcd3ebb228c230244c6dea2. 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/DEF059430542.
Le nozze di Figaro, K. 492, Act I: Recit. Ed aspettaste il giorno fissato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a078a3db11b8fb172fdbf827ea009fbb375b1094827ffdc36ceb8f02d4584ca. 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/DEF059430510.
Le nozze di Figaro, K. 492, Act II: No. 16, Finale: g. Vostre dunque saran queste carte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730a12fc7d899eeb7d6a0cc552594f3843f2b58a0e5776e15f52943cb2a3a22e. 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/DEF059430543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334c297bcfa9f9dace99502e885a55f6c45eaa7523382c0be627006e78d92453. 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/DEF059430511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf8ae924489d42fd3bfc812fbbe4ec726c43081ed76fab5ddc9ccf004a2cd9a. 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/DEF059430544.
Le nozze di Figaro, K. 492, Act I: No. 5, Duet. Via resti servita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf77e9e5e88492b2514d0a8c6b160adc6636de5865bceb24da7fbd6fbd400d60. 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/DEF059430513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1f1ff9e254c94efc47502b2e25b0153040ea8cff95ccd6f6667df975975eb2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEF059430546.
Le nozze di Figaro, K. 492, Act III: Recit. E perché fosti meco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b8bbf8b103167c28fdc0cfca5d782547e6cd71521a99b0bff8332c6ead8295. 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/DEF059430547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb19bfa61ac9bbdc3788312199b2dfd361f1b8febb1828d07c1a27cae0c80d4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEF059430515.
Le nozze di Figaro, K. 492, Act I: Recit. Ah, son perduto!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd098deb99d389116b72cdb1cc12bb5e2362eaba24e3330ce6d17944e973b5c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEF059430516.
Le nozze di Figaro, K. 492, Act I: No. 7, Trio. Cosa sento! tosto andate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a544cf9488f67f27c4ba38e9669223ca4f2639c47a350e58bc0ba8dc9ed0575. 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/DEF059430517.
Le nozze di Figaro, K. 492, Act III: Recit. Andiam, andiam, bel paggio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbbc6a7dec0657e208d5922a0991c0f182d9a546a4c0c73aab9cbff56366589. 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/DEF059430550.
Le nozze di Figaro, K. 492, Act III: No. 20a, E Susanna non vien!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751d4d62a63fba956cc06b5a20524f961aebdff8167835cd1e3ef1275094abde. 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/DEF059430551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13afb82571e9ef1ca102d7dfeacb1e21aabba2082165a4150636cddc75b7360f. 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/DEF059430519.
Le nozze di Figaro, K. 492, Act III: No. 20b, Dove sono i bei momenti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dcffeaa496966b2cd2936cf66b19c3c7069b18afcdc104d21888f3ffb039bb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEF059430552.
Le nozze di Figaro, K. 492, Act I: Recit. Cos'è questa commedia?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90334402d0f8a77eb3ea275c7cae16b3110420669990654ec097473b5905410. 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/DEF059430520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a5bbffedde28744cd465934706a43b7279db10e88cb59ab1b23f059aaa04b0. 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/DEF059430523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8240bf44579caff3709235beda9832acefc4c5b0df1c2b1f840670f02ec233. 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/DEF059430524.
Le nozze di Figaro, K. 492, Act II: Recit. Quanto duolmi, Susanna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3ee9577b7fd4b893d283cf45baf8cb79eba6b8952e7c0e13e914f9bf6b7147. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEF059430526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca5506bd8adc49115dfc23afdffcae446dbd1c31804d55a0073e4e413a5dace. 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/DEF059430527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbb39edc49f0a8661b73160294fffc57768b96ac1c1f65f11686f5345a48645. 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/DEF059430529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbc3bedcc33a43272f0201db37dc7e5a7f9012dddb98064a638880fef0ee74c. 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/DEF059430532.
Le nozze di Figaro, K. 492, Act II: No. 15, Duet. Aprite presto aprite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63458c4b24f654538851ddd1d23fc638980419fa034aeae0aa1cd36b19494203. 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/DEF059430534.
Act One: No. 16: Melodramma: ‘La Leggenda di Mastro Brunello’
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b459476ffc7db5e8fc9a4f588e5f86f0c57484af25d5203e9e748b7eca3d4a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJZY2465317.
G. Puccini: Turandot In The Forbidden City
Saint-Saëns: La Princesse Jaune & Suite Algérienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a63a39180b7aaece2a1f322dd99ce94645cbd62442164e4b02c75290f62841. 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/GBLWD0009705.
Musica sacra ai tempi di Don Bosco: Mascagni, Bellini
Offenbach: Grande-Duchesse De Gerolstein (La)