Guido Di Leone (24 January 1964 – 11 November 2025) was an Italian jazz guitarist. Born in Bari, Di Leone was the son of the jazz pianist Nino. His collaborations include Franco Cerri, Paolo Fresu,
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 0x75767f5982ffb93d0cc0f86d39c5635d123356cc4c9cbfe0d8cb318f27044a16. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed1fec80-1d1c-4035-af25-6e400cd51c8b.json and https://artists.proofprofile.net/proofs/artist/ed1fec80-1d1c-4035-af25-6e400cd51c8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Christmas Jazz Collection (The Most Beautiful Songs for a Groovy Christmas)
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 0xdae27a9e36d37d6a76116a84e4e6aeaff39349690e4db2ed74943c9b3f8a779b. 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/FR6V82068294.
Gianni Basso in Bari (You're My Everything)
The 50 Most Beautiful Christmas, Classics & Hits 2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cde3a6984dfeee5527d8f9f6af534c7fce2403824c0d73c6940ea9ec598c8a. 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/FR6V82059965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f030c0333e8aa6ce1cb3473e923b4e895ee4b6b35bb3acc5aeb5750a090114c. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/ITZJ52000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81e41337bbbf27219b63b84a8520b1e19aa1f93af1b8b99fa3c8746d29dc58a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ITZJ52000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983de4434b49b1476ad9a136b15ab02d502a5b83e8598e363e7493c8c4c0c4e0. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/ITZJ52000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f8ddaca0db0fe1b3d60958c08c82fc3041639be8fedd35f51124e98c66415f. 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/ITZJ52000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11c5294a54924ab961a3d0f94719b97e94d0ee5a8df87600e1a49b5f28d2381. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ITZJ52000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d1b2e6e6eaf172f3b8408c295938c78791cb97622a6a5e3485f7df0d347598. 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/ITZJ52000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc74b9c22fecc41ea26323300aab86645f8590aca4d8496b9ea353f1ac187873. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITZJ52000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6bced664a1e2007c526826a003093499378cabd5ac13a5802060cbd696d23e. 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/ITZJ52000059.
Nat (To Nat King Cole 100th Anniversary)
Unforgettable Natalie & Nat (To Nat King Cole 100th Anniversary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02982a3863bc1a20886000599bd6ca82791c876560f6807fdb7911b1d9547689. 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/ITZJ52100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9676faf269bb5224a7729174349ba3fff675a1a54e873bca95abe103c87f78. 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/ITZJ51900042.
The Duke (feat. Giuseppe Bassi, Giovanni Scasciamacchia) [VibeGuitar Quartet]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f8362b90b267dbeb07530568d741805b5366e096fb852fbeadb596ef6b5924. 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/FR6V82219762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee32889f6f8a6a518c72ce75d18f975eac69ad1772b944f7360777224d729d2. 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/ITS042400418.
Epoca (feat. Fabrizio Bosso, Rosario Giuliani, Guido Di Leone, Francesco Angiuli, Dario Di Lecce, Giovanni Scasciamacchia, Fabio Delle Foglie)