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 0x4eecd81d868ccfc3f41b07d9c4c24620211382c1641b9689b69dc09b9e241eec. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2118dba0-7b5c-4c3a-b298-6eb0b5593d91.json and https://artists.proofprofile.net/proofs/artist/2118dba0-7b5c-4c3a-b298-6eb0b5593d91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bestiarium: Animals in the Music of the Middle Ages
Aquila altera - Creatura gentile - Uccel di Dio
Carmina Burana: No. 185. Ich was ein chint so wolgetan
Pange melos lacrimosum [Notre Dame School, 13th century]
Balaam inquit - Huic plascuit tres Magi [13th century]
Iam nubes dissolvitur - Solem [13th century]
An doz mois de mai - Crux forma [13th century]
A la clarte qui tout - Et illiminare [13th century]
Porta preminentie - Porta penitentie - Portas [13th century]
Miri it is while sumer ilast (Merry it is while summer lasts) [13th century]
Sancta mater gracie - Do way Robin [13th century]
Caligo terrae scinditur - Virgo Maria [14th century]
Anglia tibi turbidas spera lucem [15th century]
Resvellies vous et faites chiere lye a 3
Resvellies vous et faites chiere lye a 3 (after G. Dufay)
Deus tuorum militum / De flore martyrum / Ave Rex
Ave miles celestis curie / Ave Rex patrone patrie / Ave Rex
Nobilis humilis Magne martir (Hymn to St. Magnus) [12th Century, Ornkey Isles]
S'on me regarde / Prenes i garde / He mi enfant [France]
Prima cedit femina / Mulierum hodie / Mulierum
O lilium convallium [Conductus] / Submersus iacet Pharao [10th Century, Aquileia]
Lux purpurata radiis - Diligite iusticiam
O in Italia felice Liguria (arr. S. Doron for recorder and cornet)
Pyrance la Bella Yguana (arr. E. de Mircovich for chamber ensemble)
La nobil scala [Madrigal: 12th Century, Venice]
O felix flos Florencia / Gaude felix Dominice
O sancte Sebastiane / O martyr Sebastiane
Mirandas parit hec urbs, "Imperatrix angelorum"
Are post libamina/Nunc surgunt in populo