Jader Bignamini (born 1976 in Crema, Lombardy, Italy) is an Italian conductor and clarinetist. Biography As a child, Bignamini became interested in the clarinet. He formally studied music at the Con
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 0x9038ed3d2cb6776c1cd68f7f998f2ef1567f4294dd1d534868130a7f4ab35d55. 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/ba2ed67c-93d4-4e3e-9102-9d531ab7f707.json and https://artists.proofprofile.net/proofs/artist/ba2ed67c-93d4-4e3e-9102-9d531ab7f707.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x1eff8f92a31be563d491368b51ba8d9ec2d66f5d4839a67a7ae91365d03e007a. 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/QZDSS1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e75e5cedcc2f9c131c63bb79825f71e74563c8e1c9d5517817eae787dbc9d79. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZDSS1800002.
Maria Stuarda: Ah! Se un giorno da queste ritorte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b3e03deb367b2ea811633d0337663630683877266c6b7b2abb0fa16181bbd. 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/QZDSS1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108a813c197ab7a832ac168ebfe47049ce2d41b655d028b37b6d535804a1b759. 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/QZDSS1800011.
Anna Bolena: Al dolce guidami... Che mai sento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9d7ea641c37618ea8514961cb6defeee8b6162b80faa0386c2d95d44d0fc06. 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/QZDSS1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c682e7a982245a078b1bfff1ab6fbef3a5fc6b068ca9952c4de5f904d3ff45. 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/QZDSS1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e47357de6d51e12cce2c957bcf2bfbdab04a41a85f3a53fd2e516f3904d2c11. 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/QZDSS1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3314de2b2fe0bf0f178dbcdf0a90cc82724c37eab85547fb181d170706eddcf5. 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/QZDSS1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc368070a7ff2414c59682d64140762088d4db086dc0daf3ec883dc0ca3b1b2a3. 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/GBUM70604477.
Luigi & Federico Ricci: Crispino e la comare (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000c9a25a8710f9d995c16e62fe837124944c97d0307f55d34d04912e12f7e5d. 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/DEN960601200.
Puccini: Turandot / Act 3, "Nessun dorma"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e219b8eedc938ffd39080e35a9d1f3abb44e7b8460a7a8f6da2fc65d4f07f3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEN961800330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ecf2397762cd0e3bbb1d2d473901dad20e735065a30a5cc0b1a15dd1ee5dd7. 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/DEN961800320.
Non ti scordar di me (Arr. for Soprano, Tenor and Orchestra by Giancarlo Chiaramello)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f7a60ef7cbc55bf1d7847a9797e9f472235838653238376947ed0a86d5c1d5. 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/DEN961800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92f257da19becda39ffc31f1f6c0a2d2411ea7bc9f290cbebdb7a45a8019072. 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/DEN961800340.
Orchestra dell'Accademia Nazionale di Santa Cecilia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d9e1b75d2199aa21fd15a7081747fe5f9f5d07f20be1217ce5d5777745cc2. 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/DEN961501950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7498ee4582ede8f1c9d6878a004927c5375fafc354ff35ef3254cd5b7a825c71. 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/DEN961501900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058767e2fa119eb3b440f795aad3c652a84426f2e7192dce8f2285a51dfdb565. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEN961501890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb1ff64ad4b732e94791295396b6fd5db97850cb8a488b1084f3578b5d4e969. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN960730311.
Mefistofele: L'altra notte in fondo al mare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd4ead649557b37475af0455c2c514b347a64afda62d27933f7057ac7e5e98a. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEN961501930.
12 Songs, Op. 21: 7. Zdes′ khorosho (Arr. by Michael Rot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5817c745fb22b5ac369d21c8d2a17397fa646bdefd9a9bc2432798d05bae112e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEN960630902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd200dc80cea5d9cfa053b6af970522e74240820738ad57a8e88e4946f80e2c0e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN961700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354320c921f9084395bd5d194831b50e031fe0d312f67a1b828f7a5702c213e. 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/DEN960800320.
Idomeneo, re di Creta, K.366: Quando avran fine omai - Padre, germani, addio!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3ac08612d404ef7036b5420892b99979478720de6203b0785d2efe5f2b6063. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEN960300065.
Lakmé: Viens, Mallika, ... Dôme épais (Flower Duet) - Excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ded58f74d2a481619d9a51c5d27aa0a389796678da3caab6ad9cbd4870f5a2. 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/DEN960730815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db1855457f830d103133174cb7d46a67aeb0960309f79dafa24e9d3d1b7c02b. 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/DEN960730816.
Les Contes d'Hoffmann: Barcarolle - Excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3469182194c9dd52fb4a55aa916d511332be8bd82bedb685f6a7d23fdd17c3ed. 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/DEN960800301.
Curtis: Non ti scordar di me (Arr. for Soprano, Tenor and Orchestra by Giancarlo Chiaramello)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f7a60ef7cbc55bf1d7847a9797e9f472235838653238376947ed0a86d5c1d5. 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/DEN961800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a0d5085d839dc95ca286062e4fa9f11f87ee41272a326df1192ef257567ac8. 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/NLE422423201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430209d156c9ecd28235d54b4439731c7393ea15127154b411cd9609259436f2. 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/NLE422423202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607f0fad3254ef4a703595f037718d8091dce4129030d005521cfb1b34dbcc86. 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/NLE422423203.
Blues Symphony: IV. Southwestern Shakedown
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee1d0ffac827c88e0783fb59f816a3b005c3be121de336ca7876d24468d42b1. 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/NLE422423204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d7e1fe0dece95b5217bb4e588c3a59d51af9aad0bde95c0aaa03e396762a5c. 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/NLE422423205.
Blues Symphony: VI. Danzon y Mambo, Choro y Samba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499d9fb10f354e95cc2367e64e3f2e51f9d6bba370d6d3065a5287648aeb4f7f. 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/NLE422423206.
Blues Symphony: VII. Dialogue in Democracy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed70e73834d34383e2bb7ea302efe26c7b41654e0d92adcbdcc5439c3eca368. 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/NLE422423207.
Puccini: Gianni Schicchi, "O mio babbino caro"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ecf2397762cd0e3bbb1d2d473901dad20e735065a30a5cc0b1a15dd1ee5dd7. 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/DEN961800320.
Tosca / Act II: "Vissi d'arte, vissi d'amore"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d9e1b75d2199aa21fd15a7081747fe5f9f5d07f20be1217ce5d5777745cc2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN961501950.
Adriana Lecouvreur / Act I: "Ecco: respiro appena ... Io son l'umile ancella"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0f460fea1eea09a55b801bd6200ae58619c7c788dbf1f909d7aae71358b220. 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/DEN961501880.
Pagliacci / Act I: "Qual fiamma avea nel guardo! ... Stridono lassù"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a33fd35cc237081ceaab9bab212786c90941edc4d0c30a8106716eeafa1ba4d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEN961501920.