William Otis Laswell (born February 12, 1955) is an American bass guitarist, record producer, and record label owner. He has been involved in thousands of recordings with many collaborators from all o
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 0xbb5fb6fb5037481505e7ef79d84b82fe7a054bbbc343349d23d1f78cb3a6e643. 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/34ae7d6d-be47-459f-9422-220cd6609691.json and https://artists.proofprofile.net/proofs/artist/34ae7d6d-be47-459f-9422-220cd6609691.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sacred System Chapter One: Book Of Entrance
Emerald Aether: Shape Shifting/Reconstructions Of Irish Music
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 0xabeef5a940553b2bd6d576c962384ad410f1ad057df3e6ff9246c0069c818fc0. 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/USA560556495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61992fb82ebb413d5a97867d08187ab6ca0632cc1899a73de7bf0cbf61e8a0c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USA560556494.
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 0x181402a1d398491a58b224e191074a4400f0efaa799fdf949e0ae9b0ab191148. 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/USA560556497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8518509d551ac6072c173b8ab5f572ebe4bc376f6bcc8263427047a030dfe91a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US29V0426301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4437f04faa75ec06efcb7ca605029460d5070780fb54f01c84d977da3961c1c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US29V0426302.
Sacred System: Book Of Exit / Dub Chamber 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ec9a88e2bffe58ba87a871df0a44a2aefcc2930e31f4d244c6de73fe44de3c. 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/US29V0428001.
Musso, Laswell and Carter Live At the Bowery Poetry Project 11/7/04
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa27e390c68d13c86f3196105f5ed8ce4eaac7fea0c0a0382c2f0eb8c8156b0. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/FRZPA1506130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb217ed4a97c53845ef7ab2030d7be20057ec496c1b657f27770a9a4f1326d9a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRZPA1506140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b27b3486847083ba8ef4324a03a1d511e29b9e2991683d05c82c7b0a10d7b7a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZPA1506150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1dbdb19fc5eb47affd58974a9ab5dda95d2bc7bcce9eb589162bb54df1106b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRZPA1506160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dad119d2851784629d75c551a51793263ba4d159f5aa1c7b67f3a23c27b2c8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRZPA1506170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee27e89e3c130d64247995eccc666bfb3b7b8dd3302d87f6cb468fc04e3cdcd. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/FRZPA1506180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17551b00a8d4f4baf745cb6369e67ed2b262cd7fc7b38f2fb25cf8d358dfd61. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRZPA1506200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfb2c81fe460c2beb8ffedd68c4d68dfd5d34db36c40ec2ddf91f8f8b0caf8e. 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/FRZPA1506210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48dc1a258489f0b866f9777a0d954370ccc33a04d07c63521a59005bbce4dc3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FRZPA1506230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d8d468dcde906ce345d9aec1b4af23ec9cb98b11eade1d32c8477034429013. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRZPA1506240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd00c5cab8cc113904e5970c067e373134525a3c199f514b6aa2b81c6137fef3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:47Z), 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/FRZPA1506250.
Psychic and Ufo Revelations in the Last Days - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f74943ac182ecd5a59eca4548b7b5f32783de2d30528617646d4de775ac9a9. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:01:13Z), 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/DEPI82442255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b812bd1d923db3eb7456342f4b1acdea9db4c28a8dcc575bbadab542b21872. 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/UKACT2330992.
Tokyo - Bill Laswell Shinjuku Flashback Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc09a2595cec18cde0b75b7e2424d6d164e5f9335c818118e60bddce01b01bc. 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/US99W0500035.