Kathryn Williams (born 15 February 1974, Liverpool, England) is an English singer-songwriter who to date has released 14 studio albums, written and arranged for a multitude of artists, and was nominat
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 0x87382e9494ae4396cc9f651234c74f0d5dfca40af71c5b1263654b5f4df5a962. 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/28fdd56c-36df-4ab3-a914-630d78d354b0.json and https://artists.proofprofile.net/proofs/artist/28fdd56c-36df-4ab3-a914-630d78d354b0.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 0xf0bcc36a76875ad085f708a660a2d9a97544180bad568c8d125b8aad86f338b6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBBTF1600255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3805d6463638de7815b650de79027eba4bad5462453e8b1fb2919a58dbf88c10. 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/GBBTF1600259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4629a2b95f822b25302e21c5c696a9f9a5c6260e44a2a92e94c0aa70fce54688. 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/GBBTF1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c8963177cec1be85a681eb29f1d142f7c141ae91e32030854372d0765069cb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USME31001055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e0e92d89a52165eec7b0e2854630b5729a62872c841a910f06c064bd1e6890. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/GBBTF1700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443cd36da79433f342ab9d4107542fe6765b609373c1b0de5b16d6bbf658fad4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBBTF1700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57530dd76470bf38bd969ea5ff1051486af9e000be5b6f0bb7f35c85576d213. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/GBBTF1700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07197c43cdcaab1e81839ea5198ae8ae9d450f6a4987bcce7a7b958de59e8f65. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBKPL1152946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ac2577544fa25de2cf7e839cd232c58fa5fb53939dacca8dd7f015097adb33. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBTF2300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce409b34857b8f665aa993f9aee585cfb6c62a1a5bcf0a480f8e1d493e0f90e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBBTF2300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2489163e2bf7020c0999176f70e4e5c1a98dcab27ffb1eabdfad5ca9db5683. 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/GBBTF2300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2267582412a128247f08acf0083d643ed94e3d2756e50660e4c3dd3f3c9751. 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/GBBTF2300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf952263deeb47f7f82995dabc592cfbe563998fa229c89aa937c9f5a0ba54a27. 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/GBBTF2300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3c998e857f6ff9f1c40c4992bf46555b5adfc24731c01ff1d48920249fdd20. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBBTF2300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ac2577544fa25de2cf7e839cd232c58fa5fb53939dacca8dd7f015097adb33. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/GBBTF2300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2baeaa993634e5d109b57918afb0d72fc2b00b097c20384221f3de946f218c. 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/GBBTF2300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a345624660b0490ad6a092d83f9610d4e6575c39510e801b429c4b4b5cbc12. 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/GBBTF2300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce409b34857b8f665aa993f9aee585cfb6c62a1a5bcf0a480f8e1d493e0f90e. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/GBBTF2300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b63295663b2af71281592cb9fe006d3778ee07c70246d6f8aed0be4eb46fb0. 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/GBBTF2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4e137728e2ed988d4282b7c14355d9282df80276d5e54f21f3b328deb4e789. 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/GBBTF2300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd6319a734ce4ad435010935753239e09f80916c059930882c97570934f160. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBBTF2300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ced307311239fa3c0341c991a933107cd9b916882a6c7223f53df55da48d6e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GBBTF2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e98761ab7c966652eece7e961680225c7bc968054a0fd74e0461c3fb6542e2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBBTF2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7d2b047e4c1c292a32c9e23dbff1a1325f44cc8ac039406c1b599962bb95e9. 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/CAN110800425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e8829520bc352d7d7688ea7ee8782c7ac6cf0c481371c168a782b49f202457. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GB2YG1800032.
Joy of Living – a Tribute to Ewan Maccoll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d85e2b047ac327947f4adc3043e51fdc51154def00fa59c4816f15e9c791a98. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/GBCEJ1500806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33376bf0a0c5b648c45e7cb03d53637980473a67b3b37eeec32238d3efcc2237. 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/USOM80934412.