David T. Walker (born June 25, 1941) is an American soul/R&B, and jazz guitarist. In addition to numerous session musician duties since the early 1970s, Walker has issued fifteen albums in his own nam
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 0xc29804f4002949e1c3d7617488773b863cc70808938bbf2d243caab767e41d40. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c90d7f30-6baf-4182-a692-02c8d6c83c32.json and https://artists.proofprofile.net/proofs/artist/c90d7f30-6baf-4182-a692-02c8d6c83c32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Birds of a Feather, We Rock Together (feat. Antwaun Stanley)
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 0x17ea5b61f071b1b3d1bb82eaaf2322e940d20389eb9cceeb4be5a028c1b3361a. 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/TCADG1740506.
Baby I Don’t Know Oh Oh (feat. Charles Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a11128a47261117536a94ef953cb55f951fd6bd9b34232765aafef1fc41dfac. 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/TCADG1740510.
Mr. Finish Line (feat. Christine Hucal & Theo Katzman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd2c457b62cb139a1cb3fd69d3efa1588571e734352fb3989bc72b1d54a25bb. 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/TCADG1740515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d3ce60ca2719e18cc1a61bf0e46e739340892cd5153421d0ea6d5f5bd3ff06. 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/TCADG1740517.
Running Away (feat. Joey Dosik, David T. Walker & James Gadson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86091405f29a2cd7b981072c50209173abdf2a9ff9a3a8eb634477edae619f68. 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/TCADG1740518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2be8bf3e2e7769f2cd43854d920eeea4a21216092ab255e424040649dfdec34. 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/TCADG1740520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98065d6d152c1601c6f626c18fd99cf18cd27b6e2185f5a0dfbf5912e70d7eaf. 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/TCADG1740522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760b8ab6e232769e43946144168e2975d0de611b24cdd97a2a46dfd6ccb93172. 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/TCADG1740526.
Grandma (feat. Antwaun Stanley, David T. Walker & James Gadson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1c6b2e70ba54ec35749053d794dbf4d85b1339a30e03db1ed3ef2e605f8dd7. 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/TCADG1740531.
Captain Hook (feat. Baby Theo, Bootsy Collins & Mushy Kay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418178048b40fed6946a34971aaaa9a528a5f72f98c2a708932c9adaa1f80432. 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/TCADG1740533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef5a9e1345a23a7fbc16c0bb71baf9493796ad5508ff8a508adb53a354adc78. 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/QZHNA2201158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0698cbf8d3eaeae0759cf5595c06f5fd81d8e36840b5570296454ef942179390. 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/QZK6P2261763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510360ac308446fe4eb691b6fa7552c08d7289b0e8a793725e327f9c97fbb7e1. 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/QZK6P2262648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dd927ebc4910081c7bbdff25c2c325479789bfbc181bfaab192fae3bba74d7. 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/QZK6L2229947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a4f4cd26552176782def0d10fce41babb025e02a3e0986d4cc56a226083953. 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/QZK6L2264606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb7f7a38886a951759969e885016d6f6d7f0a0cd9594f0b9b470cd92ee07a42. 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/QZK6L2296326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83150a2125f5d60e2a7656efd8181903bcd0db1f9e23f707863179b4e0dc8d5b. 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/QZK6H2267941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd218973e7723ab08a8658446b179bddcc272bc78ee2aeaaa0f1d441001e4f5e9. 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/QZMEN2262368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf634eb076325d8fe0bd49e1e5838a242d15b47afb7348b77b2a4038e0e2bde. 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/TCAGJ2208671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dbb366e657a23cc2018a54d623bc8e5c1b4d402facce760db19563c16e4755. 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/QZMEM2036241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0888735a312394e4f7bef54738bf833a323659cff11899eb92acf4e310d1b2. 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/QZMEM2053501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff18b075cfdb8894d7c5e73a83fd6ff164ba5a4c0ff1493dbae348db709a9582. 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/QZMEM2053502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebd9ac66abf1bd392537b3981ec321a7346acea89b60eab2c1d09456daf2fb2. 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/QZMEM2053503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b11847252670e84a66561cb136140ab1d260ff713185b8efb2296ca72875d91. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZMEM2053504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a2cfbf7a0779b99595ff385bb9ab2759c3834abb02ef4efb317c028618eac8. 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/QZK6G2081326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdb4fb9730a1790e1e10dbcfe8e765e0f7eec6379859a6486af902ad2c38466. 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/QZMEM2053506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905dfe7b93c534776d61937e05de48fd68bea676f1a3bbd15e91e86da6eef7a7. 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/USA371034125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02005ec25e9e05bef5b492041ea2690c9def461bc4be115538d7d2c00a7745a2. 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/USA371034145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b20f43f096147ad7a37e7f472b6fa88ef25baefa018baf807daf9be1347b1b. 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/USA371034147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8b8072e1ca8257c65715cedbf494792d3b3d0fde098c9a4f6a35806db17bef. 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/USA371034149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0813fce5825a0a6e13f004d08a95de7bc6659480dc2606ed50debb663e5b746. 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/TCACE1592682.
Conversation With a Whale: Concerto Akdeniz (feat. David T. Walker)