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 0xa59b55fabb11b3d6c7f48b5a150fb6cfaea719bc38e3de6b5dea428994984351. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dce69c1-e2fc-47fa-879f-8ea44a5d7fcf.json and https://artists.proofprofile.net/proofs/artist/7dce69c1-e2fc-47fa-879f-8ea44a5d7fcf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Missa "Pro defunctis": Domine Jesu Christe
Missae senis et octonis vocibus: Libera me Domine
Vecchi: Requiem – Rubens's Funeral & The Antwerp Baroque
Missa "Pro defunctis": I. Requiem aeternam
Missa "Pro defunctis": V. Domine Jesu Christe
Missa "Pro defunctis": VIII. Lux aeterna
Missa "Praeter rerum seriem": II. Sanctus
Missa "Praeter rerum seriem": III. Agnus Dei
Missa "Ave Virgo Sanctissima": Agnus Dei
Ex nihilo: Polyphony Beyond the Order of Things
O admirabile commercium, NJE 21.07: No. 1, O admirabile commercium
O admirabile commercium, NJE 21.07: No. 2, Quando nauti est
O admirabile commercium, NJE 21.07: No. 3, Ruby quem viderat
O admirabile commercium, NJE 21.07: No. 4, Germinavit radix Jesse
O admirabile commercium, NJE 21.07: No. 5, Ecce Maria genuit
Brumel: Missa et ecce terræ motus "The Earthquake Mass" (Live)
Missa et ecce terræ motus "The Earthquake Mass": I. Kyrie - Live
Missa et ecce terræ motus "The Earthquake Mass": II. Gloria - Live
Missa et ecce terræ motus "The Earthquake Mass": III. Credo - Live
On the Natural History of Destruction - Live
Missa et ecce terræ motus "The Earthquake Mass": IV. Sanctus - Live
Missa et ecce terræ motus "The Earthquake Mass": V. Benedictus - Live
Missa et ecce terræ motus "The Earthquake Mass": VI. Agnus Dei - Live
Josquin, the Undead: Laments, Deplorations & Dances of Death
N'est-ce pas un grand desplaisir, NJE 29.17
Tenebrae responsoria for Maundy Thursday: No. 1, In monte Oliveti
Tenebrae responsoria for Holy Friday: No. 1, Omnes amici mei
Tenebrae responsoria for Holy Saturday: No. 1, Sicut ovis ad occisionem
Tenebrae responsoria for Maundy Thursday: No. 2, Tristis est anima mea
Tenebrae responsoria for Holy Friday: No. 2, Velum templi scissum est
Tenebrae responsoria for Holy Saturday: No. 2, Hierusalem, iuge et exue te
Lamed. O vos omnes, qui transitis per viam
Tenebrae responsoria for Maundy Thursday: No. 3, Ecce vidimus eum
Tenebrae responsoria for Holy Friday: No. 3, Vinea mea electa
Tenebrae responsoria for Holy Saturday: No. 3, Plange quasi virgo
Tenebrae responsoria for Holy Friday: No. 4, Tamquam ad latronem
Tenebrae responsoria for Holy Saturday: No. 4, Recessit Pastor noster
Tenebrae responsoria for Maundy Thursday: No. 4, Amicus meus
Tenebrae responsoria for Holy Friday: No. 5, Tenebrae factae sunt
Tenebrae responsoria for Holy Saturday: No. 5, O vos omnes
Tenebrae responsoria for Maundy Thursday: No. 5, Iudas mercator pessimus
Tenebrae responsoria for Holy Friday: No. 6, Animam meam dilectam tradidi
Tenebrae responsoria for Holy Saturday: No. 6, Ecce quomodo moritur justus
Tenebrae responsoria for Maundy Thursday: No. 6, Unus ex discipulis meis
Tenebrae responsoria for Holy Friday: No. 7, Tradiderunt me in manus impiorum
Tenebrae responsoria for Holy Saturday: No. 7, Astiterunt reges terrae
Tenebrae responsoria for Maundy Thursday: No. 7, Eram quasi agnus
Tenebrae responsoria for Holy Friday: No. 8, Iesum tradidit impius
Tenebrae responsoria for Holy Saturday: No. 8, Aestimatus sum
Tenebrae responsoria for Maundy Thursday: No. 8, Una hora
Tenebrae responsoria for Holy Friday: No. 9, Caligaverunt oculi mei
Tenebrae responsoria for Holy Saturday: No. 9, Sepulto Domino
Tenebrae responsoria for Maundy Thursday: No. 9, Seniores populi
Tenebrae responsoria: Benedictus Dominus Deus Israel
O Adonai domus Israel / Pictor eterne syderum
Bithleem estimazu [Greek-Byzantine tradition]
O radix Jesse splendida / Cuncti fundent precamina
O clavis David aurea / Quis igitur aperiet
I parthenos simeron [Greek-Byzantine tradition]
O Oriens, lucis eterne splendor / Veni splendor mirabilis
O Rex virtutum gloria / Quis possit digne exprimere
Alyawma youlado mina lbatoul [Arabo-Byzantine tradition]
O Emanuel rex noster / Magne virtutum conditor
O sacra Virgo Virginum / Tu nati nata suscipe
Simeron ghennate ek Parthenou [Greek-Byzantine tradition]
Hodie puer nascitur / Homo mortalis firmiter
Motet No. 23. Felix virgo / Inviolata genitrix / Ad te suspiramus gementes et flentes
Benedicta et venerabilis es virgo Maria [Graduale]
Alleluya: Post partum virgo: Post partum virgo [Alleluia]
Motet No. 22. Plange, regni / Tu qui gregem / Apprehende arma et scutum et exurge
Communio: Beata viscera: Beata viscera [Communio]
Motets from Northern France the Cambrai Manuscript A 410
Aucuns vont souvent - Amor qui cor vulnerat - Kyrie eleison
J'ai mis toute ma pensée lonc tens - Je n'en puis mais - Puerorum
Par une matinee - Mellis stilla - Domino
Dieus ou porrai je trouver merci - Che sont amouretes - Omnes
Descendendo Dominus - Ascendendo Dominus - Domino
O Maria virgo devitica - O Maria maris stella - Veritatem
J'ai mis toute ma pensée lonc tens - Je n'en puis mais - Puerorum (Instrumental)
Ave lux luminum - Salve virgo rubens rosa - Neuma
Plus bele que flor - Quant revient et fuelle et flor - L'autrier joer m'en alai - Flos filius eius
Chorus innocentium - In Bethleem - In Bethleem
Romance de la muerte del muy esclarecido rey don Felipe (on Romance on the Death of Don Juan de Aragon y Castilla in 1497) [1506] (arr. B. Schmelzer)
Fortuna desperata (after Busnoys or Felice)
Vocal Music (13Th Century) - Hildegard Of Bingen / Goswin De Bossut (Mystics, Monks and Minstrels in 13Th Century Brabant)
Amours dont je sui espris / L'autrier au douz mois d'avril / Chose Tassin I
De chanter me vient talens / Bien doi boine Amor / Chose Tassin II
Entre Jehan et Philippet / Nus hom ne puet desiervir / Chose Tassin III
Jamais pour tant con l'ame el cors me bate
Plaindre m'estuet de la bele en chantant
Rose ne flor, chant d'oiseaus ni verdure
Chanter m'estuet de la virge Marie [RS 611a, Paris, France]
Cesena: Songs for popes, princes & mercenaries
Pictagore per dogmata - O terra sancta - Rosa vernans caritatis (Codex Chantilly Ms 564)
Inter densas - Imbribuis irriguis (Codex Chantilly Ms 564)
Hodie puer nascitur - Homo mortalis firmiter
La Magdalene: The Cult of Mary Magdalene in the Early 16Th Century
Joyssance vous donneray: Jouyssance vous donneray
Tous nobles cueurs, venez veoir Magdalene
Office for Saint Elizabeth of Hungary (Cambrai Ms 38): Antifona I [Vesperae I]: Gaudeat Hungaria
Office for Saint Elizabeth of Hungary (Cambrai Ms 38): Responsorium II [Nocturnus II]: Sub Conrado del viro
Office for Saint Elizabeth of Hungary (Cambrai Ms 38): Responsorium V [Nocturnus II]: Ante Dies exitus
Office for Saint Elizabeth of Hungary (Cambrai Ms 38): Responsorium VI [Nocturnus II]: Cul nec apex
Office for Saint Elizabeth of Hungary (Cambrai Ms 38): Responsorium IX [Nocturnus II]: Tante signa glorie
Un chant renvoisie / Decantatur (Paris Bib. Nat. 3517-18)
Volek syrolm thudothlon (Lamentations of Mary) [Hungary, 1300]