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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f68deb5ff11fbb4f2244dcf791e69e5310fadc8db19f070b32ff7009806052a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e080efc-07ec-4dac-b252-9d337a302ccb.json and https://artists.proofprofile.net/proofs/artist/4e080efc-07ec-4dac-b252-9d337a302ccb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Monteverdi: Messa a 4 voci, SV 190 - Ingegneri: Tenebrae factae sunt & Lamentations de Jérémie
Monteverdi: Mass for 4 Voices, SV 190: I. Kyrie
Monteverdi: Mass for 4 Voices, SV 190: II. Gloria
Monteverdi: Mass for 4 Voices, SV 190: III. Credo
Monteverdi: Mass for 4 Voices, SV 190: IV. Sanctus
Monteverdi: Mass for 4 Voices, SV 190: V. Benedictus
Monteverdi: Mass for 4 Voices, SV 190: VI. Agnus Dei
Ingegneri: Responsoria hebdomadae sanctae: Feria VI in Parasceve, In secundo nocturno: Tenebrae factae sunt
Anonymous: Lamentationes Hieremiae I: Incipit. "De Lamentatione"
Ingegneri: Responsoria hebdomadae sanctae: Sabbato sancto, In primo nocturno: Sicut ovis
Anonymous: Lamentationes Hieremiae IV: Aleph. "Quomodo obscuratum est aurum"
Ingegneri: Responsoria hebdomadae sanctae: Sabbato sancto, In primo nocturno: Jerusalem surge
Anonymous: Lamentationes Hieremiae V: Oratio. "Recordare Domine"
Ingegneri: Responsoria hebdomadae sanctae: Sabbato sancto, In primo nocturno: Plange quasi virgo
Marc'Antonio Ingegneri, Vol. 4: Missa Gustate et videte & Motets for Holy Week & Easter
Missa Gustate et videte: IV. Sanctus - V. Benedictus
Missa Gustate et videte: VI. Agnus Dei I & II
Madrigali a 4 voci, Book 2: No. 2, Santa Madre del ciel
Madrigali a 4 voci, Book 2: No. 16, Con voi quando partiste
Madrigali a 4 voci, Book 2: No. 19, Donna real
Marc' Antonio Ingegneri, Vol. 3: Missa Susanne un jour a5
Liber sacrarum cantionum (Excerpts): No. 6, Cantate Domino
Historic Brass of the Royal Welsh College of Music and Drama
Liber primus missarum, Missa Susanne un giour: I. Kyrie
Liber primus missarum, Missa Susanne un giour: II. Gloria
Liber primus missarum, Missa Susanne un giour: III. Credo
Liber sacrarum cantionum (Excerpts Arr. for Brass Ensemble): No. 20, Exaudiat te Dominus
Il primo libro di madrigali: No. 15, Non mi toglia il ben mio (Arr. for Organ)
Liber primus missarum, Missa Susanne un giour: IV. Sanctus - Benedictus
Liber sacrarum cantionum (Excerpts): No. 19, Omnes sitientes
Liber primus missarum, Missa Susanne un giour: V. Agnus Dei
Liber sacrarum cantionum (Excerpts Arr. for Brass Ensemble): No. 7, Regnum mundi
Qual grazia, o qual beltate (Arr. for Organ)
Liber sacrarum cantionum (Excerpts): No. 15, Victimae Paschali laudes
Marc'Antonio Ingegneri, Vol. 2: Missa "Voce mea" a 5 & Motets for Double Choir
Historic Brass of the Guildhall School and Royal Welsh College of Music and Drama
Missa "Voce mea" a 5: IV. Sanctus - V. Benedictus
Ingegneri: Missa laudate pueri Dominum & Other Works
Cantate et psallite (Arr. G. Wilson for Choir & Chamber Ensemble)
Missa laudate pueri Dominum (Arr. G. Wilson for Choir & Chamber Ensemble): I. Kyrie
Emendemus in melius (Arr. G. Wilson for Choir & Chamber Ensemble)
Missa laudate pueri Dominum (Arr. G. Wilson for Choir & Chamber Ensemble): II. Gloria
Adoramus te Christe (Arr. G. Wilson for Chamber Ensemble)
Missa laudate pueri Dominum (Arr. G. Wilson for Choir & Chamber Ensemble): III. Credo
Spess’ in parte (Arr. J. Mitchell & W. Weaver for Organ)
Ecce venit desideratus (Arr. G. Wilson for Choir & Chamber Ensemble)
Missa laudate pueri Dominum (Arr. G. Wilson for Choir & Chamber Ensemble): IV. Sanctus - V. Benedictus
Lidia miri Narciso (Arr. J. Mitchell & W. Weaver for Organ)
Missa laudate pueri Dominum (Arr. G. Wilson for Choir & Chamber Ensemble): VI. Agnus Dei
O sacrum convivium (Arr. G. Wilson for Chamber Ensemble)
Vidi speciosam (Arr. G. Wilson for Choir & Chamber Ensemble)
In spiritu humilitatis (Arr. G. Wilson for Choir & Chamber Ensemble)
Ingegneri: Répons pour l'office des ténèbres
Répons pour l'office des ténèbres: No. 1, Velum templi
Chœurs de Chambre de l'orchestre National de Lyon
Répons pour l'office des ténèbres: No. 2, Amicus meus
Répons pour l'office des ténèbres: No. 3, Omnes amici mei
Répons pour l'office des ténèbres: No. 4, Vinea mea
Répons pour l'office des ténèbres: No. 5, Eram quasi agnus
Répons pour l'office des ténèbres: No. 6, Una ora
Répons pour l'office des ténèbres: No. 7, Seniores populi
Répons pour l'office des ténèbres: No. 8, In monte oliveti
Répons pour l'office des ténèbres: No. 9, Tristis est
Répons pour l'office des ténèbres: No. 10, Ecce vidimus
Répons pour l'office des ténèbres: No. 11, Judas mercator
Répons pour l'office des ténèbres: No. 12, Unus ex discipulis
Répons pour l'office des ténèbres: No. 13, Tanquam ad latromen
Répons pour l'office des ténèbres: No. 14, Tenebrae ractae sunt
Répons pour l'office des ténèbres: No. 15, Animam meam
Répons pour l'office des ténèbres: No. 16, Sicut ovis
Répons pour l'office des ténèbres: No. 17, Jerusalem, surge
Répons pour l'office des ténèbres: No. 18, Plange quasi virgo
Répons pour l'office des ténèbres: No. 19, Aestimatus sum
Répons pour l'office des ténèbres: No. 20, Tradiderunt me
Répons pour l'office des ténèbres: No. 21, Jesum trdidit
Répons pour l'office des ténèbres: No. 22, O vos omnes
Répons pour l'office des ténèbres: No. 23, Recessit pastor
Répons pour l'office des ténèbres: No. 24, Ecce quomodo
Répons pour l'office des ténèbres: No. 25, Caligaverunt
Répons pour l'office des ténèbres: No. 26, Astiterunt reges terrae
Répons pour l'office des ténèbres: No. 27, Sepulto domino
Ingegneri: Répons de la Semaine sainte (Mono Version)
Responsoria Hebdomadae Sanctae, Feria V in cœna Domini: No. 1, In Monte Oliveti
Responsoria Hebdomadae Sanctae, Feria V in cœna Domini: No. 2, Tristis est anima mea
Responsoria Hebdomadae Sanctae, Feria VI in Parasceve: No. 11, Velum templi
Responsoria hebdomadae sanctae, Sabbao Sancto: No. 19, Sicut ovis
Lamentationes Hieremiae, Sabbato Sancto, In primo nocturno, Lectio II: Aleph. Quomodo obscuratum est aurum - Extract
Responsoria hebdomadae sanctae, Sabbao Sancto: No. 20, Jerusalem
Responsoria hebdomadae sanctae, Sabbao Sancto: No. 21, Plange
Responsoria hebdomadae sanctae, Sabbao Sancto: No. 22, Recessit pastor noster
Responsoria hebdomadae sanctae, Sabbao Sancto: No. 24, Ecce quomodo moritur justus
Cappella Musicale della Cattedrale di Verona
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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6302da82e9162444137521ef28374ec8a41946d8fb92c10554529f18ab471. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITDQ79150232.
Gesänge für die Ewigkeit - Passions- und Ostergesänge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa532d5f1582084304665ec1faa90ed8de2329d1a78c97a5aa7c493e9d696a2f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEHC20828369.