Linda Ann Fredericks (27 September 1950 – 3 May 2023), better known as Linda Lewis, was an English singer, songwriter and musician. She is best known for the singles "Rock-a-Doodle-Doo" (1973) and her
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 0x5178ff80c47e4db2bc3a66929214fc79798becb00b6c542de021fa43ef483f60. 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/6263526d-f3be-4e66-89df-c0ea4cff7fa8.json and https://artists.proofprofile.net/proofs/artist/6263526d-f3be-4e66-89df-c0ea4cff7fa8.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 0xe9887837f0c830930dfe03534e8548e3d8eb186ae30c98d7225c1cdd75b1f448. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USWB11403341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151d8945722491b4fb71cc3e5f7b107870f84d7e8af2425a21ebd7a38cd2ed5f. 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/USRE10200773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fa4d4d964a8c51506262b9acd26ab5462f1e234fec11e29f6220af53bb96e7. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USRE10200784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b63dd1b901c6b04d492344ec25bca5b3bfca8a1a834d159e65626ff42d792b9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:09:04Z), 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/USRE10200874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323836416657b25d66fa43ac082f9fea85bfd91f77c7b27b1d6e56770d8ee1d1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USRE10200771.
Class / Style (I've Got It) - Single Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab44535d1809dc6faec83b700a08c8788108a12e483f51f2e2aa76174adb0cfe. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:20:26Z), 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/NLP431110008.
Class / Style (I've Got It) - Hip Hop Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76035a58f9a1bfa49b0864e6c6d1d0d4b41872db0cbe47943f137380ec8f5365. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/NLP431110006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5def76bb55ceb306764ee16d43d865bb72fad007e359c121ba2cee99d28094e. 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/GBARL0400370.
Reach For The Truth: Best Of The Reprise Years 1971-1974
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02a79cd14d0207f5b620216576592f995c0843da8eb398ab6354fcbe6c349f8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USRE10200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adf0473e844f93369729eacab64a136bbc3cca225b1bafc4e8a76331e4976b5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USRE10200783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cb4eb8f0e7c269bf913cb27a32baaeb4ce4ad6372e6e5cbd69cb8556775c28. 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/GBARK7500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73414cd57c79f7814bf8427a56d4144c9d283839e2c79444c20a62a788116a12. 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/USUM70500667.
Reach Out - feat. Linda Lewis - Crooked Man Remix 3
Reach Out (feat. Linda Lewis - Crooked Man Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e63304985010d7c401c12bb1194de85d8391df8ddb04f3462f967a0e2bd7c8. 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/GB5KW1704044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cb4eb8f0e7c269bf913cb27a32baaeb4ce4ad6372e6e5cbd69cb8556775c28. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBARK7500016.
Cuentame Como Paso - La Generacion De Los 70
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cb4eb8f0e7c269bf913cb27a32baaeb4ce4ad6372e6e5cbd69cb8556775c28. 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/GBARK7500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab9d61f9b6826a1be43920ef1b96e7f6bb4380149d48e25f5dcf1b55fbc342d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GB5KW2202644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2f75ddd3aa0964e54c7d82ac20c320028d7c30584a569bcfb2e6d1b1b0a909. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USRE11200463.
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