right|thumb|200px|Finch on stage at Lorient, Brittany in 2008 Catrin Ana Finch is a Welsh harpist, arranger and composer. She was the Official Harpist to the Prince of Wales from 2000 to 2004 and is
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 0x2270808f7d908f45840a853263c5a7df10726f523e1d0a3a9b4df9eff6725ba5. 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/2aec000c-d914-470c-b391-939defadcdde.json and https://artists.proofprofile.net/proofs/artist/2aec000c-d914-470c-b391-939defadcdde.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Jade Mountain – Songs by Edmund Rubbra
Rubbra: The Jade Mountain, Op. 116: I. A Night Thought on Terrace Tower
Rubbra: Two Sonnets by William Alabaster, Op. 87: I. Upon the Crucifix
Rubbra: Orpheus with his lute, Op. 8 No. 2
Metcalf: Mapping Wales, Plain Chants & Cello Symphony
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 0x838e5e301f9def52a647b8255ee4390c6cb9acd967cc6eae56304f957f367890. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAAA0000621.
Miserere: Songs of Mercy and Redemption: 4. Sacramentum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e68d265fb9cb5a177ec4d66303bc1894f8f8e4b54db63183e4fbbed5edb598. 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/GBUM71902931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d6fb911ad617322a0466529cb42777ed29c2581cb75f7c6c2b1925fcb6925a. 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/GBAAA0000615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c96874c6d829a8eb3133dd9968a7a795afff703d1014d9b563348535ac70df0. 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/GBAAA0000611.
Miserere: Songs of Mercy and Redemption: 1. Principium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ab28ef45571f1bd661a9004374b1ee53a9fd50426f01e43887095073a2a7de. 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/GBUM71902929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351167bab400604fe40363295e85b82e45e5964a01521a2803f1a327a3bb2fa1. 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/GBAAA0000617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2050f78130b96cc205db70b876835d67c8b4e4eb74b71922b1defba641836cd0. 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/GBAAA0000618.
Choral Hymns from the Rig Veda, 3rd Group, Op. 26: No. 1. Hymn to the Dawn (arr. J. Lloyd Webber for 4 cellos and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527cd7b717e291155c00cd6e8b362757f27f7a7020e9b9eb317ef075c24fc867. 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/HKI191331105.
Stabat mater: Stabat mater dolorosa (arr. J. Lloyd Webber for 2 cellos and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cc3937baef9ee6822a90700574a93e4d677aebda3d4375a4880829e2ace319. 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/HKI191331111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dcc251bb4bce801c0983566ec2f5ffbbdecfcd442a15f78ce4006b6a7e118a. 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/GBAAA0000614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cddee3650c6e43f1ceb69a422376d12551a90c016bf3e3a193d7322f480ef7a. 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/GBAAA0000616.
Miserere: Songs of Mercy and Redemption: 5. Lavabis me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6031f97fda4ecdd0fb901ab0c5271a155eb40849e233f97dd974c5119189e5. 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/GBUM71902942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b78daf434394f28308c3146f4836207d7349686cd97bfe3f3b8513a2802a873. 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/GBAYC0500304.
Madrigals, Book 7: Interrotte speranze, eterna fede, SV 132 (arr. J. Lloyd Webber for 3 cellos and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f60844c841c31ef205df7146f5bbcb9ab161f042571e2bd6f8bcd174dff8db4. 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/HKI191331103.
Lost is my quiet forever, Z. 502 (arr. J. Lloyd Webber for 2 cellos and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7664b2c2f9d8d0a97b4a2f03df914755344be72a724bc30b1d8913f87de596fd. 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/HKI191331115.