Ben Wendel (born February 20, 1976) is a Canadian-American jazz saxophonist, bassoonist, and pianist who is a founding member of the band Kneebody. He has worked with Ignacio Berroa, Tigran Hamasyan,
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 0x5a21fb1c41d744f69fcffd466ee300ff6f207dd8cd7cee4aebb0b4de15273f75. 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/fd189cf0-1d4f-4f4b-b9cb-1c01e1945e48.json and https://artists.proofprofile.net/proofs/artist/fd189cf0-1d4f-4f4b-b9cb-1c01e1945e48.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chorale (feat. Gerald Clayton, Nir Felder, Adam Benjamin, Nate Wood, Ben Street & Tigran Hamasyan)
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 0x92fd3bc5db66f89b70adc175ab1ef07fc199fef4014b8956d222de7a452d0361. 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/US2W61230801.
Backbou (feat. Tigran Hamasyan, Adam Benjamin, Nir Felder, Ben Street, Nate Wood & Gerald Clayton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ad1456eb446612f24204d72573af91d5f55c300b5ffccb139f8bb3e41a1bfb. 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/US2W61230804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fec5cd41d4a41a2c87cf966ad8baf7a6bb2f0ee7205ac6fc8c0a54afa76b00. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/US9331619005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fec5cd41d4a41a2c87cf966ad8baf7a6bb2f0ee7205ac6fc8c0a54afa76b00. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/US9331619005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81747317db19c52c85416fdaeafb1ba5129e2dbb69ede04a0464cde476deb5c. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:48:56Z), 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/US9331828803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde9d1e67764a5133b3e6a4f212f22f7f93bfcc3124fbf1e52427294a82121c3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US9331828807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81747317db19c52c85416fdaeafb1ba5129e2dbb69ede04a0464cde476deb5c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US9331828803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde9d1e67764a5133b3e6a4f212f22f7f93bfcc3124fbf1e52427294a82121c3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US9331828807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25acb23e62cc10cccf86900877439b13c1e32df582caaab1d5b6b6d9adfee94. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBVEV2000321.
Understory: Live at the Village Vanguard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72f4be4a0da19949eee65de7f8202b23236db8721bc25e9d4763d11a04fcbcd. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GBVEV2400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5a8ee9169afe5728e1e1d28771935214aac1f9594802305dd5bfcab3238c90. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBVEV2400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75769f936bb3795e1838ba0ac86146cef88468425c26e25ae63ce7038d9cf0cd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBVEV2400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a45add1c4a34de49eb87f3d477d43ad2cb2ff910cd3bc29acfe0247863bb24. 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/NLGZ21600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd091121631109502ff8873e4e02fef3b825532632ca5616b8e4abe128ff5409. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLGZ21600028.
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 0xdf163e264bb10d68e897e43f938e991db0d4bb3bea3adbbdeec065dab1fd5d66. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NLGZ21600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eab70d66c8d49d9fb36e2d1960bedb2984368dba7cd876a8f45e4635021a850. 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/NLGZ21600032.