Ilio Barontini (28 September 1890 – 22 January 1951) was an Italian Communist politician and guerrilla fighter. He notably fought in the Spanish Civil War and in the Italian resistance. Biography Ili
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 0x1b8782bebddf9cbb19ec80b9ed517f44d540b3c2b2b02ab6c9b25a0e2876fdd9. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b563c68a-df3a-4a22-8155-f00bc65c5b1d.json and https://artists.proofprofile.net/proofs/artist/b563c68a-df3a-4a22-8155-f00bc65c5b1d.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 0x299adc607fc28be75509499665753b703e6a7dd5bebc1444b3128917506e4256. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ITH402208273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dc84dc49690cdb541b99e3ec2927e2737920e464c5cb3f5f06853afb7c5ce4. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/ITH402208263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102df6c98aaca9d657afe58fc01f9131ceb693d2b31f44ff3a53969d55ee455c. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ITH402208264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae691055090ce9bcbffa31bc80647af96ba892fa2252a7768859dc6b9335da93. 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/ITH402208265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a01d7cfaf8d7322aae009ac47c669078e1cc4569dd74033e2e7482c0a7d3e24. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITH402208267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd7958b1eedde075d7576de523fafcf70c8e8ba7d9f5a53d5c6311f4cff2daa. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITH402208268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b240a9a12dcd718e81883190dc4da183b2a1978b58d0ab94540d80f003530af. 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/ITH402208269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67b53f8a95599adb12438f5c207407124a7f8a3558b8e9658b738bff46ad736. 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/ITH402208270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff4c983ae97126ff5f51ca9bb73b3b9df3329b1af1d2b5cefba5f62bfd3812d. 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/ITH402208271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78606f544c70b1b0ebbcb7af9683e93060df09e31cdcc1262178795b321d6b48. 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/ITH402208272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354e6a1095ad885a816bead48f8b6123e87298d931c1cce448d1325c58d9f73b. 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/ITH402208183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492cfbe61d0d6be20be86ff769a126b0e11a504e7abd3ef9c2c41cfc15d3c34a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITH402208185.
Piano Classics for Valentine's Day and Beyond
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514f00a64bdfb71ddb54c8b6b9534ed2d8ec24f6beb8a3f1f89bf0d3db33fc1c. 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/ITH402108089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53d07f7d3e9e92d756121aada4530cd8cdde8e8dd81861bc7b852cc028a3524. 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/ITH402108095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04e85941e24d8c53f85dcf96ab03be892128bfb06a145658a70e2bbcabb563f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITH402108105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfad6b68bb4043a126adf3b72b4c3a1b34d5079d11162ec5580beb9fb2dc5725. 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/ITH402108106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0786193d0f19e4e9e1d8abe97039a401147566ec6ff2dd1ad9910082d7d2dacc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ITH402108114.
Romantic Masterpieces for Piano Four Hands
The Golden Age Italian Songs Played by Ilio Barontini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3b9dc6fbb8aca5aca0e31c9524caf8958a066f10c7d49e8c69ab92548eca35. 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/ITH402003034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171f45cd406f502403187c1701abe6a7736cf0637de96523335059b9451beef7. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ITH402003040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1625378349a8d50205f45f836f5c3855be29e9f10fd8ad69eea6edc4d0a25ca. 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/ITH401902283.
French Masterpieces for Piano Four Hands, Vol. 2
French Masterpieces for Piano Four Hands, Vol. 1
Classical Masterpieces for Piano Four Hands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaaecb234eff3c7e7707a568462abfa3c172f3a9366cf6d58e491b5594fb5f1. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/ITH402003026.
The Heart Asks Pleasure First (From The Piano)
Love Is a Many Splendored Thing: Main Theme
Over the Rainbow (from The Wizard of Oz)
The Piano Sings Pietro Mascagni - 7. Barcarola
The Piano Sings Pietro Mascagni - 6. Invocazione alla Madonna
The Piano Sings Pietro Mascagni - 5. Serenata
The Piano Sings Pietro Mascagni - 4. Ave Maria
The Piano Sings Pietro Mascagni - 3. Ballata
The Piano Sings Pietro Mascagni - 2. Pena d'amore