thumb|right|250px|Massimo Bubola at the "Folkclub" of Turin in 2008 with Erika Ardemagni and Simone Chivilò. Massimo Bubola (15 March 1954) is an Italian singer-songwriter, record producer and arrang
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 0xacafa0527ace46f1a5bdab78b91db7290a128d349330014985696fd16242eff2. 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/682b8d0d-a511-43d2-aa79-b41393f19cf9.json and https://artists.proofprofile.net/proofs/artist/682b8d0d-a511-43d2-aa79-b41393f19cf9.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 0x43702e70d588d20250be82b9c45f45d636913ae566ee32c548c2fcabfc1df9e5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/IT7009403140.
Il cavaliere elettrico, Vol. 4 (Live 1976-2004)
Il cavaliere elettrico, Vol. 1 (Live 1976-2001)
Il cavaliere elettrico, Vol. 3 (Live 1976-2001)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcf42a612c1fa2127f5d8b2840ff8611be0e1e8e8433fa4b9655e89ecd57fc5. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/ITP970400017.
Dall'altra parte del vento (Da Rimini a Don Raffaé, rivisitazione delle liriche e delle musiche composte da Massimo Bubola con Fabrizio De André dal 1977 al 1990)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00347be93715f30bce1edb3d83434d9c1b6cead861020a1dc01ce99bec0682c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITP970800017.
Il cavaliere Elettrico, Vol 1 e 2 (Live 1976-2001)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d39d93bd9457a26a26ba109fe509a09eb985a96a61e1a44d219dd96dda1a0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITP970100002.
Quante volte si può morire e vivere (In memoria di Federico Aldrovandi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c51f423f732adf710bfee09444b856dda4feb41ec9ef462846e42c1a55b14f. 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/ITP971400004.
Da Caporetto al Piave (Antologia di canzoni sulla Grande Guerra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd656ce34935403175924ecd603959593664e2c4184211cdda9eb6267695ba3ee. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:45:59Z), 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/ITP971500001.
Io vorrei avere un cuore dolce di secoli
Sassi che parlano (Alla città di Matera)
Sassi che parlano - Alla città di Matera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bd7f895da8f2a035b51cc94945f9088b6c55e9ec3d82564316c8f7675c4009. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:06:09Z), 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/ITP972400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b45c7a0cd1e1dabb9e0487e18bc7e96a42e8e906732665b2098ab086f2cc288. 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/FR6V81696350.