Judith Annabel Leventon (born 20 April 1942 in Hertfordshire, England) is an English actress who has acted in various roles on stage and television. While reading English at the University of Oxford
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 0x10918768041112bc60947ffe708cdb445d8076a491ed4299e45a634a220fac1f. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78b76ff3-6b46-44b4-b14d-72eff0134d2c.json and https://artists.proofprofile.net/proofs/artist/78b76ff3-6b46-44b4-b14d-72eff0134d2c.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 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 0xeb6de11172d9dae2180921ab1c50fd09eea85e9b874c479837391cede5307e1e. 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/GBAKW6800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf9b47746221dd5d4eeb1bff7f6b51e4961a624b1a81a5bdf37e27b91428aee. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GBAKW8800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbe92c8b1a9507f253641044bcee616e983852d118c05d9ca3f43a69d6bb578. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/GBAKW7000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b0190d4ecab026370ada3af7d3d4c1d0078cb71fff9001935594236f82b021. 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/GBAKW6800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc637c0d00d827e640afc7f3ee701c7f08ae6b61717a66ace386e73cb585ffdbd. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBAKW6800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec351ed6508055e02235e155bc760e3abdf6a60add7dbdc110a3831e1aaabb7. 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/GBAKW7000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa246c15bb5d85c343653695404eb7ecf47b5bdba2326147e556ab788cebbe8c3. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBAKW6800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e7431577573ed6508dfc9f4396854816a84eba563a123fdd5a2e19fbd8cab4. 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/GBAKW7000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eb4b20b5e242d8566d2c04b56d46f58acc16702633d855efd07edd1150c7ec. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/GBAKW7000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb731163b2dcded7a48a142f26a29f963f789f2ba6fa70b9dc14029232312196. 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/GBAKW7000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff70867f0d7f3d77825d10257157e265cd58fa38024fbf14f1a7c773f292418. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBAKW6800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d8cd8fecac51e353b13619291298624e22b7bba5f36ae6383fad269f0922dd. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/GBAKW7000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938761f534ff67ddeaf396f544471a220919e6a17f94561e762d8efa38e16c69. 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/GBAKW6800118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48432f3e688e70a01a1e8b5cd14a84c81d7bf95a152506fd3a80617c24009af. 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/GBAKW6800119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8165c04ffad4131787306919dcfdf8e2f9b82fee3063eba86e08754e68bdd1. 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/GBAKW6800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bd357d46966c2eb9b65e595ce7ef133c5e539a99ef1788a816afa0a2ece80d. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBAKW6800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd208045a0da617762def8d79f366de3771703adfa46563057baf4a69d0f2502f. 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/GBAKW8800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ae808c44050dba6cdeffcf4fc20b763ece28593e0fcdb069d862a78f9c326e. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/GBAKW6800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338a84d578a032938cb685004a2e0b4f4b9bd4a222f70dc390bb450021428357. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBAKW8800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1149855d2caa5486c250ad466355fbfb54fe1f121a5908b3a8316f8734119491. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBAKW7000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a9db2878c2b3741b36ce5d77d5e58cd3c10a46622fc2603bf2df4e864c4219. 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/GBAKW6800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb370c159f68ad997fea0760b7a2ac1363778616406c84d4f4e4cbfbce65424c0. 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/GBAKW6800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3407fa54bbab829c1007cf9956f9399d0a7a393e5e7ec184d202c81ad8784acc. 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/GBAKW6800128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfce109722bc53261392e5a31de847aa95e82332167632178ed2258ec2cff7d1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBAKW6800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc6cf07142fcab5e73b75c1679f16d964aa2842769e176b30e148b184bab595. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/GBAKW6800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81d00b5c66297dd2478691936a033fac0b525285bcecb46f560adb380034c53. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBAKW6800131.
What A Piece Of Work Is Man / Walking In Space (Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfab43da99757dfa6838c3f27d633d69fd68447f3300c6f2418c464c4e41f05. 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/GBAKW6800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7705bc05db362147d77dded5cdb341adb2a55bb338b0867d2039eba50976b6b7. 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/GBAKW6800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fab06888433efccd1dc941269eeaed3d49adf2b17d235113f21285c51750bd5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAKW6800134.
Eyes Look You Last / Ain't Got No / The Flesh Failures / Let The Sunshine In
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e16925ebb0cd4c28120df2a1048c369dc29a9d9ee8c1c0ef7911895c5a1d9a7. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBAKW7000135.
Our Last Summer - 1999 / Musical "Mamma Mia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f7552295cb064f9291d7870e16279a279f650db8ddfb92f97adab65c0f41b0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAKW9900324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40327c1b12ba9594c364c1a4446efaa78ad28670b132b8efb3fcb93b1050431d. 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/GBF068890022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fec3a51b758cd83da71a20e93e012f30317f47532cc594bf6ebe93ae35b4911. 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/GBALG9400038.
I Dreamed A Dream - Original Broadway Cast/1987
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c1f45593c11fcad2bab7f58bd02f38cfa6d13ed84d8d09ee51f197ec4b6619. 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/USGF18715105.
High, Flying Adored - Original London Cast Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb7ca630bd51a00db5a98529ff28d46b4d2f086e6d1eed040982fe2307b2dc0. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USMC10148298.
I Won't Send Roses - From "Mack & Mabel Original Cast Recording"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53df6712a3d678fc6f45e8e0a6c9dc0e5ed132a40b8253abcc4a6bc21cd5525. 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/USMC10110699.
Don't Cry For Me Argentina - From "Evita"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe865d49b494ab66e0c164bd0cd69a0e7a89d44ffd0f37ddc1c424a74179c3de. 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/USUMC0400238.