Orazio Vecchi (6 December 1550 (baptized) in Modena – 19 February 1605) was an Italian composer of the late Renaissance. He is most famous for his madrigal comedies, particularly L'Amfiparnaso. thum
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 0x33b2634447368397b292f058c51c784dc5b5b44b5fbbf6961a386c6470029aef. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1c83585-853a-4df0-beee-737b06fc80af.json and https://artists.proofprofile.net/proofs/artist/e1c83585-853a-4df0-beee-737b06fc80af.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 0x34c873a4027a376244f11d98f639a5ef3e41696cb3ed8f764f9f47143d1f1adc. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/GBLGL1247554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00149a288446d0eae46c3daad88c6ff7e253884cc731f67d104f846add0a4896. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBLGL1247556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19bfe99ff4f45285dee9b5b4141c7a0e3c72cd7c939e9d42fda0f29d6caee4c. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBLGL1247557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77c145ec945bcda8fad3614ab2f60afd01ee51a21c69a7972ec73ae716f0567. 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/GBLGL1247558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2c1b2eb59ec36449b6eb5b77c4e48696e4b94d47979bf9e129fb58fbdcb31d. 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/GBLGL1247559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c906ca48a755f0228bcb17ac0fc182157f4228dacf0df923bdad7a5c22be245. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBLGL1247560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6247f0abe20546ddf71c3566b994f20467ab3390136c55978ee06ea9bef9c50. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBLGL1247563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb893b46fd32e5d9d50706da6259e54fcba56309e4c92c21c36a575382d869f3. 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/GBLGL1247570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32304a33909f207d67de79cce874459ec4368a98bff33aaee162414b54ce3ccf. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBLGL1247573.
Vecchi: Missa in Resurrectione Domini - Motets - Canzoni
L'Amfiparnaso, Atto III Scena 3: "Tich, tach, toch" (Francatrippa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9612f0643e13eafb3df4636a42e6aa98d12fed827b7361c3f793a61b06f425a4. 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/FRZ149312120.