Walter Smith III (born September 24, 1980) is an American jazz saxophonist and composer. He is the Chair of the Woodwind Department at the Berklee College of Music. In addition to performing with his
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 0xe324fcd6ad7bf6ac36f700af5246087a42f865e1a8db57ea5c770a93c58d046c. 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/f2e24a1c-2409-49bd-a783-f8fffcc2e2ea.json and https://artists.proofprofile.net/proofs/artist/f2e24a1c-2409-49bd-a783-f8fffcc2e2ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
three of us are from Houston and Reuben is not
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 0xb364df8551d2826529a693ecb51f5e82531c829cde0ef1a079766506b2118456. 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/USUM72401707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b874d416e3de6b1e2de91bed87feb8f9ac0733a3c8810d1db4b40b387b1c46. 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/USUM72401708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeaaaee8c05902863bc9ae4ed3d44a54ce07d8603927ed4853b910e79899e32a. 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/USUM72401709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c22238932fa04e82f1027ce79020e6b6650c0a40904c0157113bad61b3566e6. 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/USUM72401720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ee8545f19f7a318f7372691671d1f3890e98343d5fe555fd627d6cb1a3f156. 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/USUM72401724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3e7ad8c06fdfafdf55c8650c89beec107da5c0f07ed2d116794386c05c7570. 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/USUM72401717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0aa382d10329ba52078e32d6929f28a0f8842e0d3a1ae83839e9afdf20c2bb. 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/USUM72401727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff3f49257f812e5ce83ccd88cd92939f74f7919a45dea3760df4a9719a3f81c. 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/USUM72401713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b34704e8cb5a594b156f4656d3d2b8245d8874fc4b95a252b26e4e644666cf. 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/USUM72401728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c0369dd2d472c3ddcd8709852ab2ecb2ba7e7e1d14cbf159a27005ff6509b9. 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/USUM72401721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c7680b42c797308032563d7aedfbd514558f928369228d013319be1cfd7e0d. 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/USUM72219862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06f9966e591d7dee23d91878693cd27fc6745e713f3892bf6ff1c29353c7781. 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/USUM72219859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46202bff5d3e21c33b82629e9476ed8400798811a8edb588e7bce68c33adea3a. 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/USUM72219858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc9e87788793dd7a2f65338f16f8cabd289b78fe11005adaa0ed4c985b4c313. 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/USUM72219861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5125d8e4d8ab92bfebc4e08df8b08a2052d9e2a831a5dcff42958f572420e127. 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/USUM72219863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2c4e2975e16ba1b0920cfde936564aa40db32791b630f142d8095c12b3a126. 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/USUM72219860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe493d3290d418838d706c610f1c1fdec30af2d7a38450a2988b166c8c54e4aed. 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/USUM72219866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16192795a57aaf627f613e892def8ebc8eea81c2ac5884a04a4a97e5dc020aba. 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/GB4DA2100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46fa347efd9285ea8e596aae13622505793559900d7053c1abdd51b4965dca3. 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/GB4DA2100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c767a5ce063c992029bf599c010c55d92ea6b9a7e7e6ed1a07ec4630030829. 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/GB4DA2100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61a525ab8001a09ff1868c471e9d2f9f3672e52c82dcc055dd0b6e50fffd6f5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GB4DA2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401adf09c50a01995d846f991e3199cb7987c115826dadf4f1b0f5f77d8c5108. 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/GB4DA2000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb987da658e3b5fc74ad237c21c406032a8a668890acd8dc79d98dc8958592d5b. 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/GB4DA2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700586ff79bd441760f00d020ab5c97d42b98d19fe5b30d93053d764dbe32233. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:09Z), 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/GB4DA1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83102a05c17fb3e6c54c9b978a50ca5d3bf916aa22340a4f0f55396ea40ce5d6. 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/GB4DA1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4c1317cf95422b3766a7e9a71e6c82971d8f816342cc08d9d562ebfaa221d1. 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/GB4DA1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d122807a7a135c873cc5b030f9a9ebdeab97fe2619122b2aaf0c744313237c. 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/GB4DA1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78de57b31c31d8cdadbeefa4036aa9a10878fd6dfc7adc7ab3a986afca91b43. 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/FR6V80017309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc5c3ca52909bb6ab74eb73c2e457358c933d20236cec0ff6da00bdea3325ca. 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/ES7710524701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b80c3fdf0005bccce0a56cbc2443a91e02ebe31e7af53fbf1773b826fae403b. 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/ES7710524702.
In Common: Walter Smith III, Matthew Stevens, Joel Ross, Harish Raghavan & Marcus Gilmore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78026d106868f6ad5356591d86c8c7f023c1762104741bf872308f6e5241c56d. 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/GB4DA1800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0a1d0d5d8f6b4d8794cc6d2222c7330fe9fa085c06c83ead2110eec5038ba3. 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/GB4DA1800118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295b50a93554270c89d497ed7b1a26a094fe15288ff9bd83d79fada321b60d0d. 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/GB4DA1800122.
One Door Closes, Another Opens (feat. Reuben Rogers, Walter Smith III)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb81871690c71dbe411ab5e753bafb6cf04c0020a028beefd0b6e07d716f1e5. 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/USUM72201889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bf1b713aeef8c64c1216213f1cbeb46f667aa5e89314b5ce0ed5c0f5d4d9fb. 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/QMFME2487024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f70f880e1328ffb9aa84d238d8ce323e98394f82bafb25a89029adceab8e27. 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/QMFME2487025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb81871690c71dbe411ab5e753bafb6cf04c0020a028beefd0b6e07d716f1e5. 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/USUM72201889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b98fba64e94ce5411177f39073cf607c684d9127c82980b5ee3cad2bffe68d9. 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/GBVEV2100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899ff3bb9b5d0d3f1856602451e8db7c539d1e3913729a4a55bff17831173a96. 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/US8JA2054002.
Band Menu (feat. Walter Smith III & Larry Grenadier)
What Day Is It? (feat. Reuben Rogers, Walter Smith III)