Leighton Lucas (5 January 1903 – 1 November 1982) was an English composer and conductor. His career was wide-ranging: he was associated with the revival of interest in 20th century English ballet, arr
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 0x263270e206aed7078e15c53d527ca1310ad130df554773169200fb213fb0cabc. Chain 2 (Bitcoin): anchored in block 954008 (2026-06-16T21:31:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3251ae16-1a3c-470c-9d03-0f5c2069383b.json and https://artists.proofprofile.net/proofs/artist/3251ae16-1a3c-470c-9d03-0f5c2069383b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: Musical Kaleidoscope - Vol. 2
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 0x459e9f6dcc402aed84068264828e6aaefeba164983547ce717cfe1fd21882fc6. 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/CH6630754003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416eeba248a76a46781cad91cbd820b4f7eb8e2cead903de7244ca5e9c30c9b5. 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/CH6630754017.
The Golden Age of Light Music: The Composer Conducts - Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac802d9e87335222573593135d82a279c4226f544c22f69ba01ee8bba3202a50. 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/CH6631157809.
The Golden Age of Light Music: Buried Treasure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02ed2c7ecc9b3d7a09e90d1fdfbd4bebcd41e5eb87f852748d4fc73a5162c0d. 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/NOCJB1400601.
The Golden Age of Light Music: War and Peace - Light Music of the 1940s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372cddd6274753fb293787593be83581c23c048752d8a8a511091dbe2ce74767. 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/CH6631057101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7fd6b65ba81440b87a4b72f0803a915a5285555da2e3c77f63937127f165fd. 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/CH6631057102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d6975d2a902908ec159bdb5682f19fdc001a6484b1f2c30d2f9e2df3bff64b. 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/GBBGL9000498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f477314a5134c839cb3a6c5561a65f4e44586a5323d29c550d2195ff448360. 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/GBBGL9000499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e69d4614222de6758ef3d956607cef0207aba7e522b8db3780e44362c57f2e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBGL9000503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5289a266f5c2592b33e090e8e230d706dcce4e5c9ff325ca3801fbe2c38be350. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBGL9000507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc5089b7abfb326f80d95fc5ddaaed8b2e5c8d987e288af622f7a38a352dc72. 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/GBBGL9000508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336ea5c322659fa1eee3b0ccecd8685cf5a799d9d3cfe8833d7c492395f82fbe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBBGL9000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaca2908df923fe918e87f82f431b3c0703fa8554dd7845ffcabf199e79898b7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBGL9000511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9802924c7135c81edb94f42dfa97d21671fcaaccffc2fef9afb9d05baa2ff147. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBGL9000513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ed81affb96bd84a8a25af2fbbf1a4369d93840d8a395240743023eebaf9499. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBGL9000515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a4571bd6cad12920501d14475b1cf4a94b1b79effbe90646c4e00d503765e. 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/GBBGL9000518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dccd88207ae946d77ff6be79fea3de8a88e280f2b939b3055ce459a7bd62adf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBGL9000523.
Kpm 1000 Series: Archive Series Volume 4: Newsreels
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1d98c0be1dfc9be44620d8e94181344ee49c7386ac8aa170bae18cef2754cb. 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/GBBGL8300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f10d44c0b21379ffb48815789a7b8315416d7ab8f02210dcb6435a37f9b2646. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBGL8300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd691c2f7babcbda2019a50a093517d20a770a65eb202a6cc7123558639fdbc50. 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/GBBGL8300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62460b99265aac86ce3a916c2bef41466c9c3942e02b422a00f64cbed13ab999. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBGL8300171.
Psycho: The Essential Alfred Hitchcock Collection
The City of Prague Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee67fb63726ba256d452e47f5b6bc73784bf31681ff8a8d73728ce73483d0ee. 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/GBAJC9801412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23efaa9cb863f922816cfe07f0b2949f46ebbd03c560f8ad6e675f927d18ec65. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC9801326.
Love Story: Piano Themes From Cinema's Golden Age
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabe6a0a27d52b1f52abb1311f79d440316805624dc14361c32defcf91abc3f3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBF071505010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3a8a2e90471b889daead399266cf5c136b2718ad15d7cb2d935ed81f34fc6f. 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/GBF071504920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5094cfc64c3e594668be604f65b926cd17b26f5e0ca0c5764c63e22f0a3b06. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBF071504980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfe6e1379ba7372a1c8c6db2349861c9ffd020e2a45a1a6f8b3785059c9a354. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBF071504960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103854528ada1033897ed678361b830e8667022d253457badb96b2553637c4ed. 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/GBF071504930.
Portrait of Isla - From "The Case of the Frightened Lady"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60aa446b5f30e053ad4f61f76c45c261d79002fee85321b3b88690658e64ac8b. 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/GBF071504990.
Legend of Lancelot - From "Train Of Events"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc829ae5877373fc2a3f42165f47b3d9ba56ebf0a6a769fd1c6a815d478fa22de. 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/GBF071505030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1994466e6641eb4ffa8a412ca77179a5fde13e03fb9b6f9fee38d860d2624808. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBF071504910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bfa901ec527fe1a995452b9422d74a236e1009f5059a53fa815512c5c77426. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071505000.
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
The Film Music of Arthur Benjamin & Leighton Lucas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4057ce7311e06453a903a11023ddd94b517bcc2483a4fb3f8ef4a6d8c2698bdd. 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/GBLWD1202216.
RAF Bomber Command At War 1939-45 (Vol 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967c71a48acba6fa32be090dcdf2617e10f3f9402f97ceb717f09977dbeb0858. 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/NOCJB1300407.