William Wyman Sherwood (born March 14, 1965) is an American multi-instrumentalist, songwriter, singer, record producer and mixing engineer. He is best known as the current bassist and backing vocalist
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 0x3b474574039683abfa41649f149b56bfff9987a80de86222f204e6ce1e4896e4. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/851affa6-534a-494a-be4d-f0985a434c00.json and https://artists.proofprofile.net/proofs/artist/851affa6-534a-494a-be4d-f0985a434c00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Another Brick in the Wall, Pt. 1 (feat. Billy Sherwood)
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 0x3bec4ff956fb32ce36e2d50ead6eee9711df4fa52f50c088b48ef20460eb1989. 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/USA370521776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f5596505db03fec14cb5f443b19b0143b63f03b24dc7469c6eee71db7783eb. 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/QMDA61381158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0d30f8c0efbd9a7828a863ccee53929fa3cc25c29b4d65c41db7cff2c9be4f. 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/USA370675236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf030569962de3bd847fc51cb82f8429a1104f8fe7d91aa07ccf2bb0e651f53e1. 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/QM6XS2302857.
Crime of the Century (feat. Tony Levin & Billy Sherwood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bdaac3b9653c42f8266088f8644a9020b68868eea0c273a343a350204b714e. 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/QM6XS1576983.
Light My Fire - A Classic Rock Salute to the Doors
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ece7ea2a525368f219b02eced6e2910ac4c52ae59758d215cbd2b12597f20a. 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/QMFMF1472900.
Check Point Karma (feat. Colin Moulding & Billy Sherwood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0177cafdc26e66919306828362c2cd4fe79515b5f1853dbb5cc7df1af1be19f9. 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/USA561156496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b16b32e6a14defdfed7c86ef3b36ce5c247e976646c1f480b6d624e0a2edff. 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/QM6XS2302863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72c0193370ff6911b66ca77e2e604f0825a1fa9b5dd59afd16e02658b50c044. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QM6XS2302858.
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
Starship Trooper (feat. Tony Kaye, Mickey Thomas & Billy Sherwood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775fd71673411312fb97704ef57d53d411393689d04baab826345f9ec7ccf748. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USA560693004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bd7672c259a426f9505493622bcf22cd1cfadd563d970fe833fceb87d3c500. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USA370521789.
Sober (feat. Billy Sherwood & Jürgen Engler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac298c3636f559b078ada007c18fd6c597c4388466303b6bf1b7a96fc9e5bb6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM6XS1576978.
100 Rock Power Tracks from the '70s, '80s & '90s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c78c92bfbc47fd9e4f72006ae5a3dc954d0bc84fed224a231aad12502f8688c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USA371109848.
Back Against The Wall – A Tribute To Pink Floyd
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4237d142e3024bfcf90c2777256ca043bf54d1dc4554b0b04a909c0b3997c9d4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USA370521778.
Are We to Believe? (feat. Steve Hillage, Billy Sherwood & Jürgen Engler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960bf9dcb573d06a916e4fec4cda51d446e36d7966cbc05a9127d643ca7a6878. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QM6XS1576979.
Random Acts (feat. Jerry Goodman, Nik Turner, Jimmy Haslip, Billy Sherwood & Jürgen Engler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cecb72131abd1226eeed158c765785f8c5f9391cdebd67335f14d020d460104. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QM6XS1576980.
Change (feat. William Shatner & Billy Sherwood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539c92d13a4d759400e80f30b750751b344612ccf2f7a09287c1bc04fca59e16. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QMFMG1366396.
Animals Reimagined - A Tribute to Pink Floyd
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7246b4875b6632835e9201043907d7f07ef048745a7c5cfcbe8e1b4cbd08bf0. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QM6XS2101319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc8a63f7ab55094c048b4855c03111755610429912df6a994fe4dbcb778206f. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QM6N21425435.