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
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c5d698bc82d0f917d2ec1e5ce5778dd1e52aa93358f921818b87a5214eaeb5. 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/FR59R2264189.
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 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/FR59R2264193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef82e250194b4293d0899852ec143cbb9cc3df7a7f2992f48f62040aa7b75bb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR59R2264194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2637d97d85e5d2281fb7056a6050f5e1b40e53a6bcfa3342fcd18292849bdb63. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR59R2264188.
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 0xb842a47dfff325699eb28984f88c36bd7a2a1e35f19f20a2c89b0e8da54aabdf. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/FR59R2264191.
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 0xe87a62891d2069b93d6130f14e60ae874a495fad5786dd46232990395b00f3d7. 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/FR2X42019725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5c2deec3079a1108f2867cf460f651c8efccbcc3f8a45af9823110adf2abbe. 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/US4R31500001.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdade497db1e0ed0f84b0903c2957e47f92f6c1594341d8f33ca36e8281afef89. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US4R31500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc06384034f7b3550fc2f867a64a476f99f939b46b4c422477d1bbd3dc1c4e8. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US4R31500004.
Private Astronomy - Geoff Muldaur / Bix Beiderbecke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a8a7467e8911e62f0d09fe9eb1a91d4afa90d35c1429647f19b57716321aa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USYND0700561.
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 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/FRX452229820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bd1c51883b6ed18d0f71a7629e49c6d5df032e864d4aad8f88be6b085631bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX762177305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3013b20cbe96d4ea88d3fef4b9cf3507365f689c6432bdddd5e2f770f8a04371. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FRX452229819.
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 0xd9d93aee411a4439f7bd0693868417ef5bc87d5b63964554888df1384edeb991. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRX282367948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5d7034af5d970fdd294e8b235ac4df832ba402b51e236a398c0d1f2fbdd4c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282131255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c9f0048b5b0f485576e5b69bccdde935ac47b9a247644c43881e38270e37d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 0x423906a42a783df45708dd0def112ae008bea621e4ab85610809d52259687974. 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/FRX281741141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a8dcdd634f1c23fe16e92c2018428e37bd3d10f0dcfdfb7f02c4ca1e18b810. 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/FRX281741144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2dfd913bcd93d13207048cfc66c16d1362845fc05607bf417f6e4e210cea50. 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/NLGZ20900762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb41fcf9fb0a26fa280a4c2665f31eb4643516f9643d323f4ad6a44bad559e2a. 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/NLGZ20900761.