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 0xd8722688abb9915ef62c7db47652846deb4c80c273e02e15f6464cbaeebfdeb8. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e67dd9c9-681d-4f07-858d-13804f3f873d.json and https://artists.proofprofile.net/proofs/artist/e67dd9c9-681d-4f07-858d-13804f3f873d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lebendige Vergangenheit - Maria Maksakova
Mysterious forces, great powers (Khovanshchina)
I walked all through the meadows (Khovanshchina)
Dimitri! Tsarevitch! Dimitri! (Boris Godunov)
En vain pour éviter les résponses ameres (Carmen)
Werther! Qui m´aurait dit la place (Werther)
Printemps qui commence (Samson et Dalila)
Mon coeur s´ouvre á ta voix (Samson et Dalila)
Clouds plotted with thunder (Snow Maiden)
Anthology of Russian Romance: Old Russian Romances, Vol. 2
Chto Eto Serdtse (What's with My Heart?)
Ya o Tebe ne Stanu Slyozy Lit (I Won't Cry for You)
Usni, Pechalniy Drug, No. 4, Op. 47 (Sleep, My Sad Friend)
Tikho Vecher Dogorayet (The Evening Slowly Comes to an End)
Ya Tebe Nichego ne Skazhu (I'll Tell You Nothing)
Tikho, Vsyo Tikho (Silent, Everything is Silent)
Anthology of Russian Romance: Maria Maksakova, Vol. 2
Ty Skoro Menya Pozabudesh (You'll Soon Forget Me)
Lyubya Kolosyev Myagkiy Shorokh (Loving the Soft Rustle of Ears)
Kogda, Kruzhas, Osennie Listy (When the Whirling Autumn Leaves)
Nam Zvyozdy Krotkiye Siyali (Gentle Stars)
O, Yesli b Znali Vy (Oh, If Only You Knew)
On Tak Menya Lyubil (He Loved Me So Much)
Moy Geniy, Moy Angel, Moy Drug (My Genius, My Angel, My Friend)
Anthology of Russian Romance: Maria Maksakova, Vol. 1
Slyshu li Golos Tvoy (When I Hear Your Voice)
Tak i Rvyotsya Dusha (My Soul Is Yearning)
Krasavitsa-rybachka (Beauty Fisherwoman)
Razlyubila Krasna Devitsa (The Fair Lass Doesn't Love Me Anymore)
Chto Ty Rano Zoren'ka Poblednela (You Faded Out Quickly, Oh Dawn)
Ah, Proshli, Proshli (Hey, Let's Go, Let's Go)
Ne Zhemchug Dorogoy (It's Not the Precious Pearl)
Chto Ty Rano, Travushka (You Dried Up Quickly, Oh Grass)
Kak Sladko s Toboyu Mne Byt (It's Such a Pleasure To Be With You)
V Krovi Gorit Ogon Zhelanya (Desire Burns in My Blood)
Gorko, Gorko Mne, Krasnoy Devitse (It Pains Me, the Fair Maiden)
O, Deva Chudnaya Moya (Oh, My Beautiful Girl)
Tolko Uznal Ya Tebya (I Only Came To Know You)
Ya Lyublyu, Ty Mne Tverdila (You Said You Loved Me)
Skoro li Ty, Solnyshko (Will You Rise Soon, Oh Sun?)
I Remember the Charming Sound of the Waltz
Eugene Onegin, Op. 24, TH 5, Act II: Entr'acte
Eugene Onegin, Op. 24: Act II: Entr'acte
Eugene Onegin, Op. 24: Act I Scene 1: Introduction
Eugene Onegin, Op. 24: Act I Scene 1: Slikhali l vi za roschei glas nochnoi (Tatjana, Olga)
Eugene Onegin, Op. 24: Act I Scene 1: Bolyat moyi skori nozhenki so pokhodushki (Chorus, Larina)
Eugene Onegin, Op. 24: Act I Scene 1: Uzh kak po mostu, mostochku (Chorus)
Eugene Onegin, Op. 24: Act I Scene 1: Kak ya lyublyu pod zvuki pesen etikh (Tatjana, Olga)
Eugene Onegin, Op. 24: Act I Scene 1: Nu ti, moya vostrushka (Larina, Filipjewna)
Eugene Onegin, Op. 24: Act I Scene 1: Mesdames! Ya na sebya vzyal smyelost (Lenski, Onegin)
Eugene Onegin, Op. 24: Act I Scene 1: Skazhi, kotoraya Tatyana (Onegin, Lenski, Tatjana, Olga)
Eugene Onegin, Op. 24: Act I Scene 1: Kak shchastliv, kak shchastliv ya! (Lensky, Olga, Onegin)
Eugene Onegin, Op. 24: Act I Scene 1: Ya lyublyu vas, Olga (Lenski, Olga)
Eugene Onegin, Op. 24: Act I Scene 1: A, vot i vi! (Larina, Filipjewna, Lenski, Onegin)
Eugene Onegin, Op. 24: Act I Scene 2: Nu, zaboltalas ya! (Filipjewna, Tatjana)
Eugene Onegin, Op. 24: Act I Scene 2: Puskai pogibnu ya, no pryezhde (Tatjana)
Eugene Onegin, Op. 24: Act I Scene 2: Akh, noch minula (Tatjana, Filipjewna)
Eugene Onegin, Op. 24: Act I Scene 3: Dyevitsi, krasavitsi (Chorus)
Eugene Onegin, Op. 24: Act I Scene 3: Zdyes on, zdyes on, Yevgeni! (Tatjana)
Eugene Onegin, Op. 24: Act I Scene 3: Vy mne pisali (Onegin, Tatjana)
Eugene Onegin, Op. 24: Act I Scene 3: Kogda bi zhizn domashnim krugom (Onegin, Chorus)