Dame Elizabeth Violet Maconchy LeFanu (; 19 March 1907 – 11 November 1994) was an English-Irish composer. She is considered to be one of the finest composers Great Britain and Ireland have produced.
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 0xa7561c0d83f9fe6f6365fc8e14198f47c365ba287986f8bf247bf22661ece350. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f016527-54f6-4223-b69d-5ee61d551d22.json and https://artists.proofprofile.net/proofs/artist/5f016527-54f6-4223-b69d-5ee61d551d22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Maconchy: Overture, Symphony for Double String Orchestra, Serenata Concertante for Violin and Orchestra, Music for Strings
Maconchy: Symphony for Double String Orchestra - Serenata Concertante
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 0xac96d2548fd6a6c069e5cedec0c1078348baf80d03ab77035c8606794716e23b. 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/GBAET9222200.
Maconchy, E.: Sofa (The) / The Departure [Opera]
Elizabeth Maconchy: String Quartets Vol. 2
Elizabeth Maconchy – The Complete String Quartets Vol. 3
Elizabeth Maconchy – The Complete String Quartets Vol. I
Concertino for Clarinet and String Orchestra: III. Allegro
Dialogue for Piano and Orchestra: II. Allegro moderato
Elizabeth Maconchy: Nowell, Nowell, Nowell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caa3cf9d9e8f0f5c683c05dc2a1bf821cfefdaa37f76e90aa805c714a96d1d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBSMP2406315.
Maconchy: There is a Lady Sweet and Kind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab0c0d6b19bc21066e9dfcf68bafb2b9bc15282c70380dafa0231b7d53b1acd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBEBL2533816.
Maconchy: Have You Seen But a Bright Lily Grow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e820ca7312633ac13cfdd5c5176f51b582d08024d325ccd4d0e6c01fd946e29. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GBBGK2556205.
The Garland – Art Song by Elizabeth Maconchy