1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833270014736a3ec966c7300cc8a30733322f4cb263933948ec091ce5b004618. 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/5a680b61-f7a5-4c45-9abf-7f12da260ecd.json and https://artists.proofprofile.net/proofs/artist/5a680b61-f7a5-4c45-9abf-7f12da260ecd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Documente ale culturii muzicale vocale în Muntenia, Moldova și Transilvania
The mastery of choral structure and performance - Musical thought and language in romanian contemporary music
The mastery of choral structure and performance - Folk melos, byzantine and gregorian chant - Essential parts of the romanian musical heritage
The mastery of choral structure and performance - Conception, style, interpretation
The mastery of choral structure and performance - The specificity of romanian musical classicism and modernism
The mastery of choral structure and performance The Madrigal - Touch in choral structure and performance
G. P. da Palestrina, Missa, Mottetti e Madrigali
The mastery of choral structure and performance - Spiritual homogeneity and its values
The mastery of choral structure and performance - The virtues and servitudes of european renaissance the french, spanish, german and english schools
The mastery of choral structure and performance - The virtues and servitudes of european renaissance the dutch and italian schools
Marin Constantin la 80 de ani, Renașterea europeană și Contemporaneitatea românească, Vol. II
Marin Constantin la 80 de ani, Renașterea europeană și Contemporaneitatea românească, Vol. I
Seară de muzică și poezie franceză, Omagiu lui George Enescu
Despre contemporaneitatea corală românească