Ferruccio Furlanetto (born 16 May 1949 in Sacile, Italy) is an Italian bass. His professional debut was in 1974 in Lonigo, he debuted at the Teatro alla Scala in Milan in 1979, in a production of Verd
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 0x6e2636b834ed10b0167cb44b0a828631c8cd2093d0703c61d26c213b0b1bb37f. 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/64eaecee-ea82-4bcd-93a7-80d5ef80c42f.json and https://artists.proofprofile.net/proofs/artist/64eaecee-ea82-4bcd-93a7-80d5ef80c42f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SONGS - Rachmaninov / Mussorgsky (gesungen in russischer Sprache)
SONGS - Rachmaninov / Mussorgsky (Sung In Russian Language)
Don Giovanni, K. 527, Act I: No. 1, Notte e giorno faticar
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 0x1d77deba649d75a4df109cf52a871c20241b2e0267e7cd7346ae0e66ff3392e8. 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/DEF058530418.
Don Giovanni, K. 527, Act I: No. 3, Ah chi mi dice mai – Udisti? qualche bella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dfec0172ea415eab6096cd837cfbeda199f67837dd1f05c4f2a1db46ff293c. 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/DEF058530402.
Don Giovanni, K. 527, Act I: No. 4, Madamina "Catalogue Aria"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3192eeb2d29c5ac9617233ebe5fd294576f75eb51652a8d0c7d8e58910289f. 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/DEF058530403.
Don Giovanni, K. 527, Act I: Recit. Leporello, ove sei?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf4e41b12e8d77acbab218d84154c904f680e13ddb2e7ca30284e242282f868. 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/DEF058530419.
Don Giovanni, K. 527, Act I: Recit. Orsù, spicciati presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74583de66d872035f6e433210a5449069953db5e5f24ca51678f63179e825c7. 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/DEF058530423.
Don Giovanni, K. 527, Act I: Recit. Chi è là?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d54b0ed170561c4ccde3abbeeb51d929bc4bc7531d7801b8ef861a4c3d16df5. 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/DEF058530424.
Don Giovanni, K. 527, Act I: Recit. Manco male, è partita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636597e28b8bd67f9d296b9f39452ad9f8f1ed7bc25eb2fdf1444b120b23f38e. 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/DEF058530426.
Le nozze di Figaro, K.492 / Act 2: "Voi signor, che giusto siete"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbce6da3427106411e7f4d45e21bb258841226c06afd8c8830c82732f8fc427. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF059030411.
Don Giovanni, K. 527, Act I: No. 13, Finale: f-j. Riposate, vezzose ragazze... Trema, o scellerato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ce6c685b0aa968d5d59da18d01e52b341eebf8e85d7fdfef48f8d9a488ab61. 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/DEF058530444.
Le nozze di Figaro, K.492 / Act 4: "Gente, gente, all'armi"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e1d1bcaf5dbd981d636718cf7b9e9b979e6977abb0cd67a7c007ac51532aeb. 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/DEF059030420.
Don Giovanni, K. 527, Act I: Recit. Io deggio ad ogni patto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da2aabf473adfeef56e397f5ca3c57eca7d42f8db24a2ea90d51f7afbc484e8. 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/DEF058530437.
Don Giovanni, K. 527, Act I: No. 13, Finale: b. Su svegliatevi, da bravi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f256005203142c18d8a55847400a9e7340a32ede424070299d66dd24e8d84e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530441.
Don Giovanni, K. 527, Act I: No. 13, Finale: d-e. Bisogna aver coraggio – Protegga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e40eb65d710c65ef974dd6e0e8afb9cc7d0081886275a4e9afc7241f6f8a15. 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/DEF058530443.
Don Giovanni, K. 527, Act II: No. 14, Eh via buffone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58455e7935147b74ac5a9b632a51255722553c73db82eb1da5fedd1973cc35e9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530410.
Don Giovanni, K. 527, Act II: No. 15, Ah taci, ingiusto core
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836ae3ea46bcd250921e71598bca3f491234718897f58aca7633a5b7ad0cc25a. 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/DEF058530411.
Don Giovanni, K. 527, Act II: No. 19, Sola, sola in buio loco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976945d0150d151708f4e67d100634bb5e7d7fe4b433aded2c3ba8528d16b580. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530454.
Don Giovanni, K. 527, Act II: Recit. Leporello! Signore?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813ad2016a1a0d4299bb06e6ada867a0d46e7e8e5784d58d592cdafbaa34bcdd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530445.
Le nozze di Figaro, K.492 / Act 3: "Riconosci in questo amplesso"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a1bf236d1267d16f91c72e47619e0163e789812a8fa766dee506b4dbd499a. 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/DEF059030415.
Don Giovanni, K. 527, Act II: Recit. Eccomi a voi!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72de58aadd1af42359739d91969d81f599daca81e7b1ce4b1e203222ae6b1f73. 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/DEF058530447.
Don Giovanni, K. 527, Act II: Recit. Di molte faci il lume
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754c80eb1fd7df6e1b7a7a404e3422fbc723d98df27b0571551dc0d77c13cbb0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530453.