Paul Wertico (born January 5, 1953, in Chicago, Illinois) is an American drummer. He gained recognition as a member of the Pat Metheny Group from 1983 until 2001, leaving the group to spend more time
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 0x6c94724ad5099829ebe98dc3376b0553bec4a3c90ed22aa39bb9e865d1184f31. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e867f7e-5ac5-4eb6-a90b-10a7d728bc1d.json and https://artists.proofprofile.net/proofs/artist/0e867f7e-5ac5-4eb6-a90b-10a7d728bc1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Paul Wertico's Drums Without Boundaries (Music by Cage, Wertico, Ugoletti, Scaglia, Pedrotti, Tasca)
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 0x1d14bd7078e01a4ae8483bff3bb25663d0f046c0899e418f4692dcb07049e4ef. 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/QZHZ51935171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c8308b50d238ce2b4ed0ee1d7b9e59c87ee42d7d9e686457a799a983fa5372. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHZ51935175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e67ba4ee7715afbf58949ee19e46e6704f4d8d562e6b2ca39f56cbdd3b0e74. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHZ51935176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d76e5cdaec700e71d679af4ed8b1dd0ae28a5deff8e1d35966ef3d0e522d18a. 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/QZHZ51935179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae96cde8dccebe319cf9b4cbc7660b9d483b0b6e03949f5aa3094cacfab2607d. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZHZ51935180.
Paul McCartney in Jazz : A Jazz Tribute to Paul McCartney
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2f4006a73eab96395677e2b34eb208213af3346807f75bce925d8898a55e7a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEC820375710.