Lafayette Leake (June 1, 1919 – August 14, 1990) was an American blues and jazz pianist, organist, vocalist and composer who played for Chess Records as a session musician, and as a member of the Big
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 0x3aec2c70daa616ddeb80f5831509b22d6c826bece4a355ba5c4afbefc8f87620. 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/6764094b-7588-4f60-b02e-3c4c9785ecb7.json and https://artists.proofprofile.net/proofs/artist/6764094b-7588-4f60-b02e-3c4c9785ecb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Easy Blues (France, 1978) [Blues Reference]
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 0x59f246e8be766dd2f8a1f83f039e144ca167cfe273914bf46c08b5c1d729ac4c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:25:00Z), 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/FR6V87800252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9db9aa376e701f38d378122d746127a862029ec635e64cbfea8f67b5bcf8eb. 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/FR6V87800259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f710fc06fb88d99e0098d0803fa149f6928d53361073da5ff905a57b3a3c11. 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/US4B91382801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17bb33f4c0543edd8e6e7745834d5eb23b23328437c5e8dd572f7f8dafe29b8. 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/US4B91382805.
After Hours - Atlanta Live April 3rd. 1973 - Restauración 2024
Willie Dixon Live at Richard's Atlanta April 3rd. 1973 (Restauración 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57205a6c4ca65f5ba971720c72dd307675dcd45fa663800f51add4bca81cb9d6. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ARU8P2400179.
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
Trouble - Atlanta Live April 3rd. 1973 - Restauración 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d37a56e07091af4a40c536d16a336d1f3c2da946803559f8df33ec196dd953. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ARU8P2400180.