1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca89830218c1a1e819392d0d4678f909c74d5c83e5949e809277579dae88eae0. 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/32420d47-1416-45bb-8b97-5bf2b636003a.json and https://artists.proofprofile.net/proofs/artist/32420d47-1416-45bb-8b97-5bf2b636003a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ars britannica. Old Hall Manuscript, Madrigals & Lute Songs
Cooke: Alma proles regina (From British Library MS 57950 "Old Hall Manuscript")
Forest: Qualis est dilectus meus (From British Library MS 57950 "Old Hall Manuscript", Also Attributed to Plummer)
Pycard: Gloria II (From British Library MS 57950 "Old Hall Manuscript")
Damett: Salve porta paradisi (From British Library MS 57950 "Old Hall Manuscript")
Power: Credo II (From British Library MS 57950 "Old Hall Manuscript")
Chirbury: Agnus Dei (From British Library MS 57950 "Old Hall Manuscript")
Weelkes: Madrigals to 3-6 Voices: No. 15, Those Sweet Delightful Lilies
Weelkes: Ayres or Phantasticke Spirits for Three Voices: No. 3, Some Men Desire Spouses
Ward: The First Set of English Madrigals: No. 19, Retire, My Troubled Soul
Morley: Madrigals to Four Voices: No. 17, Hark Jolly Shepherds
Byrd: Psalmes, Songs, and Sonnets: No. 19, Come Woeful Orpheus
Weelkes: Ayres or Phantasticke Spirits for Three Voices: No. 6, Come, Sirrah Jack, Ho!
Ward: The First Set of English Madrigals: No. 8, O My Thoughts, Surcease
Morley: Madrigals to Four Voices: No. 18, Die Now, My Heart
Tomkins: Songs of 3-6 Parts: No. 8, O Let Me Die for True Love
Wilbye: The First Set of Madrigals: No. 10, Lady, When I Behold
Weelkes: Ayres or Phantasticke Spirits for Three Voices: No. 1, Come, Let's Begin to Revel't Out
Pilkington: Second Set of Madrigals and Pastorals: No. 19, Care for Thy Soul
Wilbye: The Second Set of Madrigals: No. 15, As Matchless Beauty
Wilbye: The First Set of Madrigals: No. 4, Weep, O Mine Eyes
Morley: Canzonets or Little Short Aers: No. 16, You Black Bright Stars
Tomkins: Songs of 3-6 Parts: No. 9, Oyez, Has Any Found a Lad?
Pilkington: The First Booke of Songs or Ayres: No. 17, Diaphenia Like the Daffdowndilly
Jones: Ultimum vale: No. 12, Thinkst thou Kate to Put Me Downe
Pilkington: The First Booke of Songs or Ayres: No. 16, Down-a-Down
Dowland: The Second Booke of Songs or Ayres: No. 17, A Shepherd in a Shade
Dowland: The Second Booke of Songs or Ayres: No. 12, Fine Knacks for Ladies
Dowland: A Pilgrims Solace: No. 17, Where Sin Sore Wounding
Campion: First Book of Ayres Contayning Divine and Morall Songs: No. 11, Never Weather-Beaten Sail
Campion: First Book of Ayres Contayning Divine and Morall Songs: No. 20, Jack and Jone
Ford: Musicke of Sundrie Kindes: No. 8, Since First I Saw Your Face
Ford: Musicke of Sundrie Kindes: No. 9, There Is a Ladie
Dowland: The Third and Last Booke of Songs or Aires: No. 17, I Must Complain
Campion: Second Book of Ayres Contayning Light Conceits of Lovers: No. 19, A Secret Love
Dowland: A Pilgrims Solace: No. 2, Sweet, Stay Awhile
Dowland: The First Booke of Songs or Ayres: No. 6, Now, Oh Now I Needs Must Part
Fantasies to Two Voices: No. 1, Il doloroso
Fantasies to Two Voices: No. 2, La girandola
Fantasies to Two Voices: No. 3, La rondinella
Fantasies to Two Voices: No. 4, Il grillo
Fantasies to Two Voices: No. 5, Il lamento
Fantasies to Two Voices: No. 6, La caccia
Fantasies to Two Voices: No. 7, La sampogna
Fantasies to Two Voices: No. 8, La sirena
Fantasies to Two Voices: No. 9, La tortorella
All in a Garden Green, Four Seasons of English Music
Four pieces from the First Book of Consort Lessons: IV. Joyne Hands (Thomas Morley)
All the Queen's Men: Music for Elizabeth I
April Is In My Mistress Face (Thomas Morley)
The First Book of Ayres or Little Short Songs, Pt. II, Thirsis and Milla: Thirsis and Milla
Kirkby, Emma: Musique and Sweet Poetrie - Jewels From Europe Around 1600
Music To My Ears, A Collection of Music for Children of All Ages - Fauré, Chopin, Saint-Saëns, Schumann, Borodin, Bach, etc