Pino Calvi (12 January 1930 – 4 January 1989) was an Italian pianist, arranger, conductor and soundtrack composer for TV series and films, which included Tunis Top Secret (1959), Crimen (1960) and The
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 0x7b98a9e7acc8ac4b88516c2f0ebec3f881c9f9b5fb9c53c315461ce35514dbae. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c4b6373-bc83-44d1-87e7-6774a674c234.json and https://artists.proofprofile.net/proofs/artist/9c4b6373-bc83-44d1-87e7-6774a674c234.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04eb8b41f37502a01fcba2a14a705a3f078ba7f2ec16067ae40a860f12bfdf4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:23:25Z), 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/ITL240800395.
Contemporary Piano Masters by Pino Calvi, Vol. 2
Contemporary Piano Masters by Pino Calvi, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019c785ab96b5d22afde24b7df92a63058be03884d7f4aa6adaf9cdb66eca92f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ITA641001651.
Pino Calvi Plays Italian Classics, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d54a9f1a4a9c86375f7319dd6579957aea1169cc2f9202bb86b17a220f153b7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITA648001024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef6883ff66a46a96372e8490a7835fecc5006439bb9289974ead27a5a64c09d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ITA647200776.
Contemporary Piano Masters by Pino Calvi, Vol. 3
Pino Calvi Plays Italian Classics, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7b598518dfc04379011a8d54e3de40911b931ad92253b9015e558beeffbf58. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:52:33Z), 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/ITA641001634.
Contemporary Piano Masters by Pino Calvi, Vol. 4