Nancy Kerr (; born 1975) is an English folk musician and songwriter, specialising in the fiddle and singing—a pioneer in a style of music called fiddle-singing. She is a Principal Lecturer in Folk Mus
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 0x197fd2b68f43c25923891d86413f678e228a8c602e229bf05260ef91b658c2b5. 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/c0a86633-d3d8-48e9-9175-c84bbc53136e.json and https://artists.proofprofile.net/proofs/artist/c0a86633-d3d8-48e9-9175-c84bbc53136e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
An Evening with Nancy Kerr & James Fagan (Live)
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 0x77d5e3052ebe75a7412d7560c74f0ae481ade3f8ef0dac406d0d0c8ae4cfa1bf. 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/UK7671900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d7975b89273fff1c01e01a94fabff19be8a713f4f8af2d95d5fa57870214a3. 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/UK7671900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50a8ca85601171d5a272488ca90eabca7c2d58411cbcc274625f3f71464f6e5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UK7671900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e0be0617ebeee909e9ddc5643cdcd10a879c8c3593b16934b066757114c385. 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/UK7671900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f8750db0c01503fbc866334f42702ff352858a7f8f95852ebda0cb9b43e098. 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/UK7671900005.
Sir John Fenwick / Nancy Taylor's / The Pearl Wedding - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcf556c3223515c5397dceb85c5bdea5d7c1b9f7d2455f163ab257c2de3ed8f. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/UK7671900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1d5f7e4d839f43d7789d0bc80ae7948fa3c807af2ecd3082a94b413ca00804. 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/UK7671900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8271447613e10cafad6490d910c940ec0152cbed7d47562a00d2284d7e8cbc82. 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/UK7671900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d45f9b1964db334b99096c8e585c85b50f25e0f4d38526fe640ad941d69b364. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/UK7671900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6af6314e6d3951e0dfd897919cc0e7c18aa55aa44ef2bbb5e7ee5b046e53ab. 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/UK7671900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d8bf973847151dda29798410caebe339067aa5f8355a7f26a4960e048886cf. 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/UK7671900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ce5251f0774461dc4c050adb9a26ac0187ea723f08fe914a40218f69eecc42. 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/UK7671900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0c4f4d3e25dfcccafdcc5b6b2c2e1e1a864e61daffe22c251d3e9fb36b570. 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/UK7671900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f537cf3e5bc7c359231bcd41794fbc5e4b017168f9614086c1f839ed6d487c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UK7671900015.
Gan Tae The Kye / Peacock Followed The Hen
Stick In The Wheel present: English Folk Field Recordings Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8312b17c46d6ee92c306e1e69a14029d7aec22aa1166e14f960a37a6bb8c3845. 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/UKA3U1800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bacf477c7f5fc76be7b605b998716c85b822877358c476071067653e45b65b. 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/UK7671600005.