Antonio Lotti (5 January 1667 – 5 January 1740) was an Italian composer of the Baroque era. Biography Lotti was born in Venice, although his father Matteo was Kapellmeister at Hanover at the time.Ha
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 0xfb0f186de8d7eabbc45163d414fa30832fe4f717ebe4af3dc421af77a6d2808d. 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/a0df11b4-2260-4ca9-aedc-96a95ca3b058.json and https://artists.proofprofile.net/proofs/artist/a0df11b4-2260-4ca9-aedc-96a95ca3b058.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Requiem in F Major: Requiem: Requiem aeternam
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 0x432fe56514537ec1d4c1ceed79bd8f296d353941264cde51037b7116a8982cb1. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEE479800547.
Requiem in F Major: Kyrie: Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fab38c7a9d4d1af616eb7b93d080923fb0a5e9fb30e71ef567a18e6245aba6. 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/DEE479800548.
Requiem in F Major: Dies Irae: Dies irae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3529275b08e71ac208177fcc267d246d9a0b960572f935dd9ade5c13ee7209d2. 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/DEE479800549.
Requiem in F Major: Dies Irae: Quantus tremor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e46c54fe2d9c188e06e00517d0f4cafcb9d6c6dfc7845deff2c08f40f3979c7. 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/DEE479800550.
Requiem in F Major: Dies Irae: Tuba mirum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e99d57622eff58623b3bc764baa1087041c0fdafd2672e79b814641cbc8997. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEE479800551.
Requiem in F Major: Dies Irae: Mors stupebit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0ac77414b25cdfeb6c6084f102808de8a15060ed4ac2f196204b93ee3b7132. 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/DEE479800552.
Requiem in F Major: Dies Irae: Liber scriptus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1991527fd1c8d40929cf48803f5a6c89dbd93cf44930fabaf62fbe97c717171. 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/DEE479800553.
Requiem in F Major: Dies Irae: Judex ergo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc260d2e4f11a16673762ec860115eb2ef0b2cece4dae251bce0349acf60427c. 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/DEE479800554.
Requiem in F Major: Dies Irae: Quid sum miser
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7179c72ac1d361a7e6090d429d32f922b9efeb4729141680270005cb5dd8ea. 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/DEE479800555.
Requiem in F Major: Dies Irae: Rex tremendae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2869258232b28e846edf03b826c82e777f3beb0199b9faea0f3e3931b748df3b. 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/DEE479800556.
Requiem in F Major: Dies Irae: Recordare, Jesu pie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe901db0671938b635fad497917a3a004fc7198a1016ea38360a13b5207e7fd0c. 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/DEE479800557.
Requiem in F Major: Dies Irae: Quaerens me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b08c5e9379ae2c56e4038955b64aaf0cd1a4c4257dface4d2ae076bf26d3dc. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEE479800558.
Requiem in F Major: Dies Irae: Juste judex
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505be731fbbda498ca935b297de5661e4d20c437d3a6d914d42201d6ca6a6abc. 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/DEE479800559.
Requiem in F Major: Dies Irae: Ingemisco tamquam reus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170e8ac2e5ca3d2de3d34686089371cac679e34206f94b9af393b4c07c2f49a7. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/DEE479800560.
Requiem in F Major: Dies Irae: Qui Mariam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd1024ea4003ae6c8c9c3efd8e3606680d8e6be627dc8055384d5daf169735c. 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/DEE479800561.
Requiem in F Major: Dies Irae: Preces Meae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c33f78f1cf5b0a0af1205392b4497a129fde459871f3c0cc97b144b3d446f7. 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/DEE479800562.
Requiem in F Major: Dies Irae: Inter oves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf151cf6a050a59bf5fbf7795106f4086809e3261d0e9764af5214722829da639. 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/DEE479800563.
Requiem in F Major: Dies Irae: Confutatis maledictis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9efe345c23b4e1ec70299b9fc623dee2f80a9aa7d8d6141cabfcdfe84fefca3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEE479800564.
Requiem in F Major: Dies Irae: Oro supplex
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf18591d7c0120eb2eb47fb62108c817394660a91a6a0fce22188b3928b5a518. 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/DEE479800565.
Requiem in F Major: Dies Irae: Lacrimosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b2ac0f0b62b406761752b5cafb0d69c3cd58fd1e23f7537c97f88c2a89bf80. 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/DEE479800566.
Requiem in F Major: Dies Irae: Judicandus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d06a9793b4886f083c55aa8b93706063b39b3af89eee7a7bba32ecd0b2035b. 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/DEE479800567.
Requiem in F Major: Offertorio: Domine Jesu Christe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc671c19f3d0f59f429854aa4dd5c42532e12abe4245ce8005614453bec20771b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEE479800568.
Requiem in F Major: Offertorio: Hostias et preces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f8420e386cf6b62d59f03f1567240b537e1b09a9c134064f176c130ac2592c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEE479800569.
Requiem in F Major: Offertorio: Quam olim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccb40f82daaac83263eb9d441a8ff1c04b69870eca92c37d01c85fb1183ad8b. 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/DEE479800570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f79676d2c782d5473c34767fab50e15d8b6dd8b5f25f167e8cd3563868543e8. 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/DEE479800571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7e3d99fe2474e18169748d84535e00f1e48b6a269ffab2e025c91fcd2e5052. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEE479800572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db1da81a5475618e126f94c4999cea0e2724050fa3f4f65b7e800eeffdb33b2. 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/DEE479800573.
Credo in F Major: III. Et resurexit (Presto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96e0ed4ae2018231a06c0ab50885e04f89a40c61b088276f2ec3b714088030a. 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/DEE479800574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c9ad65c03c1fe1727e5dd9330caa534110a9edaa28cd1b1122c5174c83c046. 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/DEE479800575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d48b7fff0665d6838c6f5b4909336fc3cc0ee0fa7e1258965a390326538b85. 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/DEE479800576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6fbeab03ae349c0300ae85c718d296fc1165fbf0e5fa686a12caf43b9ca134. 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/FR46Y2153409.
Now the Green Blade Riseth: Choral Music for Easter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfda088d252154ca670fb882f98b490af12fd0a7e2db9dd5e8f47e391d2c69db. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/GBMY52206508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa73e88eb3dfd3a3a82f66c3b91802bd7d704b3b0d41e96daf077e4c39b06c28. 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/FR46Y2153408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef23073bbc365afe6cb19cd9c7d183ac0685b28aa5205dba2fb1feb7ed7bced4. 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/FR46Y2153410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459afb3695d615b83956b4967f2cb6034d1f9fbfe9d0b20ba87e9257e9f6fd00. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBLLH2491405.