John Peter Petrucci (born July 12, 1967) is an American guitarist, best known as a founding member of the progressive metal band Dream Theater. He produced all of Dream Theater's albums from Metropoli
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 0xa0692482bce283024744e8d26d77746d27fe046aec5cb66b65ab725562c621f6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc51085e-0d90-47ed-9c93-7b4a0e91e1a8.json and https://artists.proofprofile.net/proofs/artist/bc51085e-0d90-47ed-9c93-7b4a0e91e1a8.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 0xc7fa4a5e82403d200ab30c84778a84eaeb7ec640fa53ea8baff3aa6f014b4c19. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US78S0503501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ef495ced972fce7ddf7ba83f11a4c97279facfc9ef15672c1382d237255bdf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US78S0503502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ba63b72e6e9895d14abc944eac74dd5bacb7a614708137f55da7010059834c. 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/US78S0503503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126ec9ce3b64b972aeff38c3ac0d332e74fe3a3e5c34977258bf2ff092dae5fe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US78S0503504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ee84c87c0b7c679f91bfcd9298d66023e1579c34456fc89ec1d9b29620e664. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US78S0503505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a420809538cd6f2e3f1613e87aa5262f17f6dcb654797b9016b6896a331b87d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US78S0503506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531108861dd0c5f56f8aef8e472c2763f679befd54375f40de111630e03e8247. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US78S0503507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1c03466cf5dd7ccaa721b6edf6977314bf012a0e7ef82cdf77d03977cca7ab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US78S0503508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd22ba2fabd3b341d2f5ce7dbfb63978a17f49770914464bbb67a4334472511. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US78S0502301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18821d1b077f14bd0fbe0bed90185541dd669bf9378c7dfa155405b0d42b35fe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US78S0502302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9787879f1db329c45c86fe52103d687de1e428b14721535b73bc3440b2505a5c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US78S0502303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164f2c9cf48e6d26ca6f2a947d97cac3b02fb1dfd87714e4b1e80c369a4237b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US78S0502304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20722fa9a331292a0bae8a3ced81041be393dc22ffc3a861a4bf2b635eac97bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US78S0502305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403908621abf8b2687017b40820b4fe88de0abb2ef16e751fa2ddb4fafd68445. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US78S0502306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6773a8af92a96a3954eed2703f4248899119a506c64dfcdf4cc2ffd1052af0. 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/US78S0502307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8c1b9ec30ed652648cf7978c907fa371e1cc5ea7ba451973364abf473d317b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US78S0502308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ec2b5a7dbe5111e16d56f51049d1a0f7f438c9d854786c09d0e17ae312f4aa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US78S0502309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1983e28507ca0576a63395c09997cee67764a77f13b15b93c0d66404ab0114a6. 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/US78S0501008.
Sonic Residue From Vapourspace - The Magna Carta RemixSeries, Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880893c53f8409d98699d2e38dc558572a0bf5d9ebbcd2ebc7ea0d940fa9cf24. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US78S0505705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a602562d50fbb8f3a3b13f392df0dd36ae061143b539e30c5e5636e9cce205. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/US78S0510606.
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