Walt Weiskopf (born July 30, 1959, in Augusta, Georgia) is an American jazz saxophonist, multi-instrumentalist, composer, author and educator. He has released sixteen albums as a leader, and performed
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 0xd627c485fb59c0455064a5b13fafb665d4085de5eac5fe410461033a07b0fbc5. 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/0ca89a20-994b-4285-a19e-1212ac4b5564.json and https://artists.proofprofile.net/proofs/artist/0ca89a20-994b-4285-a19e-1212ac4b5564.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
European Quartet: Diamonds and Other Jewels
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 0xead8313079ae89da7b48ed94f13e63a8f875a9fcb88ad6c78c04f2e35a108308. 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/FR59R2264190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e795b5425eb10dcc48c037af44c28ac26cd34c3da41789d91f73d5ae901116a. 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/FR59R2264193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef82e250194b4293d0899852ec143cbb9cc3df7a7f2992f48f62040aa7b75bb. 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/FR59R2264194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50288568a7d27b317545b53e39c2b13f737e397ecd3819880107903b5322fc11. 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/FR2X42019728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ffdd85eac9b047682d652065907a2c3829027d9d409fd0460b44553dd8ca3f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4R31500003.
Private Astronomy - Geoff Muldaur / Bix Beiderbecke
Shorter Moments - Exploring the World of Wayne
European Quartet: A Little Christmas Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cce316b5eb8b89742366295b3c7b290d28385dacd614c61479499ce4a66052. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX282379191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce5f91fe4297099ac613e89c5b57e8d8196db9e0b9ab3588c13f599f6b91a77. 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/FRX452229820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8effc90457a26e438aac20d46c4912a5f68a9a75bb285c4f65827609bde367ea. 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/FRX282367951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c9f0048b5b0f485576e5b69bccdde935ac47b9a247644c43881e38270e37d. 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/FR10S1948334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a8dcdd634f1c23fe16e92c2018428e37bd3d10f0dcfdfb7f02c4ca1e18b810. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX281741144.