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 0x338c1838e9cac21067164e9a25ad5b99f49729118154a4ecc25d6414eb938a81. 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/2faf81e6-704e-4038-aced-19192065b115.json and https://artists.proofprofile.net/proofs/artist/2faf81e6-704e-4038-aced-19192065b115.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clemens Non Papa: Missa Pastores quidnam vidistis - Crecquillon: Pater peccavi
Clemens: Pastores quidnam vidistis - 1. Pastores quidnam vidistis
Clemens: Pastores quidnam vidistis - 2. Natum vidimus
Clemens: Missa Pastores quidnam vidistis - 01. Kyrie 1
Clemens: Missa Pastores quidnam vidistis - 02. Christe
Clemens: Missa Pastores quidnam vidistis - 03. Kyrie 2
Clemens: Missa Pastores quidnam vidistis - 04. Gloria
Clemens: Missa Pastores quidnam vidistis - 05. Domine Deus
Clemens: Missa Pastores quidnam vidistis - 06. Qui tollis
Clemens: Missa Pastores quidnam vidistis - 07. Credo
Clemens: Missa Pastores quidnam vidistis - 08. Et incarnatus est
Clemens: Missa Pastores quidnam vidistis - 09. Et resurrexit
Clemens: Missa Pastores quidnam vidistis - 10. Et in Spiritum
Clemens: Missa Pastores quidnam vidistis - 11. Sanctus
Clemens: Missa Pastores quidnam vidistis - 12. Hosanna 1
Clemens: Missa Pastores quidnam vidistis - 13. Benedictus
Clemens: Missa Pastores quidnam vidistis - 14. Hosanna 2
Clemens: Missa Pastores quidnam vidistis - 15. Agnus Dei
Crecquillon: Pater peccavi - 1. Pater peccavi
Crecquillon: Pater peccavi - 2. Quanti mercenarii
Missa Ecce quam bonum: Gloria in excelsis
Accesserunt ad Jesum: Accesserunt ad Jesum
Missa Ecce quam bonum: Credo in unum Deum
Carole, magnus eras: Carole, magnus eras
Clemens non Papa: Requiem & Penitential Motets
Missa pro defunctis "Requiem": I. Introitus
Missa pro defunctis "Requiem": II. Kyrie
Missa pro defunctis "Requiem": III. Tractus
Missa pro defunctis "Requiem": IV. Offertorium
Missa pro defunctis "Requiem": V. Sanctus & Benedictus
Missa pro defunctis "Requiem": VI. Agnus Dei
Missa pro defunctis "Requiem": VII. Communio
Missa defunctorum: Introit. Requiem aeternam
Missa defunctorum: Tract: Absolve Domine
Missa defunctorum: Offertory. Domine Jesu Christe
Missa defunctorum: Communio: Lux aeterna
Missa defunctorum: Introit: Requiem aeternam
Missa defunctorum: Offertory: Domine Jesu Christe
Gloria (from Missa "à la fontaine du prez")
Agnus Dei à 4 & 6 (from Missa "Spes Salutis")
Trois Souterliedekens à 3: I. Als ick riep met verlnghen
Trois Souterliedekens à 3: II. Welsalich zyn se hier op aerden
Trois Souterliedekens à 3: III. Hoort myn ghebet o Heere
Kyrie à 5 (from Missa "Gaude lux Donatiane")
Jacobus Clemens non Papa: Sacred Choral Works
Missa Gaude lux Donatiane: Sanctus - Benedictus
Missa "Gaude lux Donatiane": Sanctus - Benedictus
I Fiamminghi (The Orchestra of Flanders)
Renaissance of the Spirit: The Music of Orlando di Lasso and His Contemporaries
Motet "Magi veniunt ab oriente - Magi, videntes stellam"
Veni Domine: Advent & Christmas At The Sistine Chapel
Missa Philippus Rex Hispaniae: IV. Carole magnus eras
Frais Et Gaillard,The17th Century Technique Of Diminution : Frais Et Gaillard (Recorder and Regal)
The Art Of The Recorder, PJ Belder Part: 1
Masters from Flanders: Polyphony from the 15th & 16th century Vol. VI
Mutations. Les chimères de Clément Janequin