Lena Martell (born Helen Thomson; 15 May 1940) is a Scottish singer, with a long career in theatre, television and musicals. She has recorded thirty albums which include the number-one UK single with
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 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 0x619db3d64ff127e9ccd4d70f0c87bcd5be48630cd0430892600ad9a59333c7c1. 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/05fff41f-8756-480d-81e8-ed85cdc7d3c4.json and https://artists.proofprofile.net/proofs/artist/05fff41f-8756-480d-81e8-ed85cdc7d3c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
One Day At a Time - The Best of Lena Martell
One Day at a Time - The Best of Lena Martell
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 0x7b5ac2b7f748baf9e590df315a22ac9683dd5bf9ecfed594f855e56bb0ae2fc4. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBAJE0707705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9db517299cf558a47c452ea892edffc2a100f52785dea6e2a5002c1e9c02e1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBAJE0707701.
One Day At a Time - The Ultimate Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796783dac88de5a3b940bf6d90975403057078acf703e65eec3edcab36716222. 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/GBAJE7900336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d7670014aa06198a6e21c696b5e702d942dc440d3816922c0c94a25f555360. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBAJE7400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b505ba23b78d8086e0915f751b831bec58a79ef7db7261eb964d4beb4e87fb. 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/GBAJE7600277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f858988372f5e80cc154140428b6c1bca527f5a7552374525017c243c7924f. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/GBAJE7600278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac9ba07ce8d2786348c4e44f804c025b8a7b3fe4e6d19e3c81fd37739b74e35. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBAJE7700236.
One Day At A Time: The Ultimate Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbabe3d0102c05d9490c0ba938e6234a573452c82975d23cb759a6acd8b238f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBBEX8400983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3fb4ed70c50d84ae5648ca99974fae40e3b6007cc0255f66fe00a809ca2c85. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBBEX0400990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218df4b5bd1415f7d65b8b1ae81cc9430bde12b3e04203db845fbe9385f78e74. 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/GBBEX0400991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf943b4f4e36cfb66ac154bfbaadbf9ab71f1ee2c41856ecd9aee7f39a35532e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBBEX0601378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9821011be523b0b192223985139cc738f9461c69c1a56add451dfb3b13e009a1. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBBEX0501084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883242464465b70b85f1fe7efd8cee0c385230e91f60f1309f0cdf9759c3032a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBBEX0701579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca1a197073a712de450675f57dd32a51d9d9abdce575e928f74b083c29b6684. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJE7500370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96439fd90c7c4888d2d698b2bdec2b8032635a3dcad9f2dd9a39045a5ab0a8e2. 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/GB5KW2201391.