Piero Ciampi (Livorno, 28 September 1934 – Rome, 19 January 1980) was an Italian singer-songwriter. Biography Adolescence and early musical experiences Piero Ciampi was born in Livorno, on V
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 0x98bf90cfd18778f68754ed4e8947858f5de352ca3f999a6c7db0e977ec1920fd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1f07943-6a95-4c49-a375-8493818c79fc.json and https://artists.proofprofile.net/proofs/artist/b1f07943-6a95-4c49-a375-8493818c79fc.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 0x7dfd0b05647e3018e0c9b41b083bb756d702347b0a1c8ebb6cf3c7c6e6d8c403. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ITB008400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5a39be4c1f61a140e02b0612ef9616418af2028dd27426ab14abc3d7d531e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITB008400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b6c1189540531ff91d587ec7711cc19edf6823e7f5765b609f273ecd04a744. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/ITB008400309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43d9c12ed831969f6726d36b665ec3e5040f1ce61746ed15da0fc29770d2987. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITB008400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd3d2c7e4db9a8520d7bb11ef0571d67886872d578272d69b127b646dfe5bc0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITB008400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a9e0ff29d7af09fd31f5a265ec43ede912012081e91b4ff054bd912609702a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:41Z), 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/ITB008400315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130f686c4e6fa184ceec5309a2558b246c19d06d2ec4dafb131500159cc2aabd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:31:14Z), 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/ITB008400319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22fffb0980f5664e9bd36e674688915e0bd05256a5d116068d7e955f72bc907. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ITB008400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920e5d16550f19bbcd1853f27ba467badf93366fdb6c114830165ccb3610490b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITB008400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0a7f366996a845df8dc25d0864cdd99e92d49a695313363e84a5b9d5222c3e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITB008400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6706ae45d39c0b9f0935c8b02087b616fbd76f7bbde4252847a78a5c739a4cea. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ITB008400675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf578953cc3c25c4c3dcf247090bf37455e1c7db7ba0c6af8d859de39eb2ecb55. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:23Z), 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/ITB007401167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2373f5e1de351b876c5cd50f49b5bb8a1a9c49092cfac7e967861f35f915549. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ITB007401318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dc2ce4ab05ce5309cb9bc7f922eaf4b51d614d418a93695ec7ca7cd330a409. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/ITB008400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4197ecfaddb4adc0792d187a27017deb56755ec26475e197e903c33deeba2e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITB008400316.
L'ultima volta che la vidi / Quando il vento si leva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe807a18e0ad5819af18e0a79866e72fab3d0f90fe87e3cad7dd88660bea6a6a1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITC000600549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92791665349f4651df3f786361fbeef6a7aecf3bce9732d5aecc88f2a5bbe157. 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/ITJ361000531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1365104f65185deb3ab6d6ce54e900176dcbe15f6ea35194ac8fad44c3915f4b. 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/ITC000600545.
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 0x843a22b92023f445deb48114545e58316df8680b77206ee4c124ac9a1c831775. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ITB008400308.