William LaTour, better known by his stage names LaTour and Bud LaTour, is an American musician, disc jockey and voice-over artist. His musical genres span electronic, house, glam, rock, dance, punk, a
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 0xa3d80c213acc18b5aa015492abd9c196eb93a0fe81af7112cf088ff6fd8ecc6b. 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/481090f1-38ef-4adc-a08f-366824a081d7.json and https://artists.proofprofile.net/proofs/artist/481090f1-38ef-4adc-a08f-366824a081d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x3e0eb3f6f41160f173e41895655cf65b5e0c57521faa741bd8252669d8bbcbf7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USWWW0128372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034e836abfcc80fa58ad82e289adc3d43f088346e7b2126358a815c1485086f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USWWW0128378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f57997bcab4ceebbad14d30cba2f25dbe5af4891c8824dd7c1564cbe5c9f3cf. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USWWW0128379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18406100e484eb013af992c088354296e0323657b809ea2c1089aacc079ef649. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:34:49Z), 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/USWWW0128383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf7a5ca187113130da2330f6ecaba72ef858a2aa06b8bdfb512e4d25375c69a. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:42Z), 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/USWWW0128375.