Cerys Elizabeth Matthews (; born 11 April 1969) is a Welsh singer, songwriter, author, and broadcaster. She was a founding member of Welsh rock band Catatonia and a leading figure in the "Cool Cymru"
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 0xbf82fbc2089e0223134159d1b8e456e474ea198dcfcf05eb61d7e80392e1c3c2. 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/84d9ea1e-ab27-4f24-a039-ad778ead3312.json and https://artists.proofprofile.net/proofs/artist/84d9ea1e-ab27-4f24-a039-ad778ead3312.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Caught in the Middle (The Three Trees Sessions)
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 0x5fb666f21315b678680aca129077e2032d6afb0fb247de7943cf06c4433a1ea0. 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/GBAHT0300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4792c2626acb847b2433cfd335c817c586360d94b39b194b74104fa03a1bbe73. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GBAHT0300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28112ec4ff11e08712427c6c74687496db819a49e43d1b6d31709c1a77cfadad. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/GBAHT0300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa907009bbc42c1482e68b95a49ab3c442ef76f0153a2617b13a0719d71e2f7b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GB5DP1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf455fa73316a6fdef7e0dc5a37a824e44fe07521156d287625619be8db8d104e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GB5DP1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af91caf8618fbeb22beb5e9407b5f8dcc1c11570f8aa5e4b8189676c03ea40f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GB5DP1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2bf63fb4707ad723f21eb6f45099307dced93567c5881388e946db04889db8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GB5DP1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef254fadb64c53048c6eb3a3d2fa6eb80cb8c4aaab63558a23aefe14f61b539. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GB5DP1000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bc88695ae3d357ec25efea55ec953f00a93b1ac1fcbc03e8287c13dbc59d05. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GB5DP1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdbfa402052674c8054dbad092df3b6c8d235551823df74307ab61e823f8eba. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GB5DP1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57b02f94c84bff650fd5a7e2362be8c9b3100936d34a8d9e71d51445d385e8c. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/GB5DP1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82ec88c6ad1d443a10314628ac9fa0685b23f0fd964f693826015ab4012c21c. 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/GB5DP1000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97518a53fd92d22e4b8b06462a20ed09dc7a38c7a042f8579ee9ad3d013593ca. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/GB3MR1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bceaf42c6933d93c20b1158e20151c69a2c9fef2b8480d497ada2b5836b584. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB3MR1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe361e1638fdb361777b7a155d865f087513048aca13457baacd16b672fbc57aa. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/GB3MR1300013.
Dylan Thomas a Child's Christmas, Poems and Tiger Eggs
A Child's Christmas, Poems and Tiger Eggs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0f7765d851caf520aa38835dfbfe2f68c3b1e0b6645e34af72d9ae1b2f67c9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBUM72004522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c39827a81bdb55ef42a99897ccfd37ad3ce0c6c6e84affd5226799d534f6ad1. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/UKHY52100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7a423c503ae326c00ae64a4c428655b74906e2bdaf62115a0bec547ec61a3d. 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/GBUM70811800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3447918916490a8e49463399ac989397d0aab8a54625f89101960da195a58138. 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/GBBRL9970160.
Some Kind Of Wonderful - Album Version Duet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43135a6aae483a22f0273f63e95d4799fb28dd9d2f0e5ef36598bb05a813816a. 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/GBUM70704603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3447918916490a8e49463399ac989397d0aab8a54625f89101960da195a58138. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBRL9970160.