Douglas Gordon Lilburn (2 November 19156 June 2001) was a New Zealand composer. Early life Lilburn was born in Whanganui and spent his early years on the family sheep farm in the upper Turakina Rive
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 0xb4584f4a0a4a1007eef54af382a0dff27d263e22eb996c7d862010609f5c5c9a. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34c1302c-c0c9-4da7-9ab1-45f54c45a0fe.json and https://artists.proofprofile.net/proofs/artist/34c1302c-c0c9-4da7-9ab1-45f54c45a0fe.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
The Essential New Zealand Symphony Orchestra
Cavatina (Die durch die Hölle gehen): Deer Hunter: Cavatina
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 0x76e40783d078a11fbf923e47cc5f420f058801abbd09d9f311b8253c3d89dc4c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199648019 — a six-check JSON result.
Farewell to Stromness (arr. T. Walker for guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7249f6ee101837f4b8b10aa35b0419afa85750873bd4f060079f0afd78380f8b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190412006 — a six-check JSON result.
6 Schubertian Songs (arr. J. Mertz for guitar): Lob der Tranen (Praise of Tears), D. 711 (arr. J.K. Mertz for guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd8f05b13d0b45aa23c87a33e21e467c66030946a1d3d5f520e8381b0f0a672. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199294512 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ada868a6fa92b40739e7cd1227a170dc67833b09458aed48be6ea26c5d9cbb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199236005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125061b28e7456a996eab6202a57f6fc1c612b89dbac5bcb673f3b57a3fb29b9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2283667 — a six-check JSON result.
Landscapes - New Zealand Orchestral Music
Lilburn: String Quartet in E Minor, Phantasy Quartet & Canzonettas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cb1236c2489d3a8fd44b9f22fb0616f497a12f33c2712c9eab26f713d5eed3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZRA01200091 — a six-check JSON result.
Occasional Pieces for Piano: 4 Preludes (1942-44): I. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81181b3283904d4b96963df146fdd9eeeab46f1e5169e0b2cf2664e233ea91c4. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZTR00400034 — a six-check JSON result.
Occasional Pieces for Piano: 4 Preludes (1942-44): III. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00250183dfe725869e52e0a2dd6b4f8eadb6dd7d7c13de37ba94b1201e5bc75. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZTR00400036 — a six-check JSON result.
Remembrance and Other Favourite Piano Pieces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6de9001f5196ec35b55de3ce458e49dc7eae8ee15806fd966d27d7f12c77dd5. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZOD01000022 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe66114ea22ef26cff00defce0485ab00e6d9614ed2cc46fc627a4902b49c8cb. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZOD01000023 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7904791cb9775e706df19e6595788721f20ad7f79f18bba43928b7be8ad8df8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZOD01000024 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf96aa4f77bec8d25955abd11157eec5bf35177180901d1ce6d2c2b70a75c404. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZOD01000026 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9597eb76c9221f68277014b95ac01d38780ed20cc167f2d6d50d3842e3f6a56. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZOD01000033 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a9c65425615917c71caf1bf863ce005f4e49c0c6429ff32ef42775e585bf4d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZOD01000041 — a six-check JSON result.
Love's Old Sweet Song (Just a Song At Twilight)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4828741f242f712190b7c6d73e75f2006eab2ca96ad70970fbb169d3e9f7b68f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZOD01000043 — a six-check JSON result.
Whānau: Voices of Aotearoa, Far From Home
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb140b2580d936d4c549a154f1936e303d3aa33d92d14c15216d08b9f3aadf20. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSW02000113 — a six-check JSON result.
Prospero Dreaming - New Zealand Guitar Music, Vol. 1
Lilburn: Symphony No. 2 In C Aotearoa Overture, Diversions For String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe802b10b6b7ae158723d6237791eed13cebca315719c74e3af57af7392adcbd. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560844840 — a six-check JSON result.
Bridge / Lilburn / Ireland / Orr / Finzi: Songs for Baritone
Dante Dances: Music for Clarinet & Piano
Viola Aotearoa: New Zealand Compositions for Viola
Piano Masterworks from America & New Zealand