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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87382e9494ae4396cc9f651234c74f0d5dfca40af71c5b1263654b5f4df5a962. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). 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
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 956576 (2026-07-04T02:06:47Z), 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/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 958462 (2026-07-17T23:17:53Z), 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 (2026-07-17T02:40:22Z), 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 957648 (2026-07-12T03:52:24Z), 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/GBBTF1700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07197c43cdcaab1e81839ea5198ae8ae9d450f6a4987bcce7a7b958de59e8f65. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:56Z), 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 0xda2489163e2bf7020c0999176f70e4e5c1a98dcab27ffb1eabdfad5ca9db5683. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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 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/GBBTF2300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b63295663b2af71281592cb9fe006d3778ee07c70246d6f8aed0be4eb46fb0. 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/GBBTF2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ced307311239fa3c0341c991a933107cd9b916882a6c7223f53df55da48d6e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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 958484 (2026-07-18T03:34:53Z), 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 953528 (2026-06-13T15:41:10Z), 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/CAN110800425.
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.
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.
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
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.