thumb|Chalabala in 1930 Zdeněk Chalabala (18 April 1899 – 4 March 1962) was a Czech conductor. He conducted orchestras in Prague, Ostrava, Moscow. Life and career Chalabala was born in Uherské Hradi
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d4e104f8864720c14f9655720873da2be4e6683eeaad01af9b46795ab870f7. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c4794a5-309c-40a2-b9c9-78160ddc108a.json and https://artists.proofprofile.net/proofs/artist/4c4794a5-309c-40a2-b9c9-78160ddc108a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xbdb884e96a7074e021dc820375b3d37e2d1f88582fb4845601bc8719bc3c0e48. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CZA168600010.
Dvořák: Rusalka, Op. 114 by Zdeněk Chalabala (Remastered 2023, Studio 1961)
Antonín Dvořák: Symphony No. 7, The Heirs of the White Mountain, Symphonic Poems, Opp. 107, 108, 109, 110 & 111
The Heirs of the White Mountain, Op. 30, B. 134 (Hymnus Dědicové Bílé Hory): Part 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb64d1554fd7bb19d97f75e320a108d2b1f456393a38441f784194cbc0d23278. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FROV67236905.
Tchaikovsky, Gounod, Mussorgsky & Others: Opera Arias & Scenes
Mussorgsky: Songs and Dances of Death, Selected Songs
Slavonic Dances, Opp 46 And 72 / Orchestral Highlights From "The Bartered Bride"
Symphony No. 2 In D Minor, Op. 70 / Overture to The Devil And Kate
Rimsky-Korsakov: Sheherazade - Khachaturian: Gayane
Dvořák: Symphonic Poems by Zdeněk Chalabala
Mussorgsky: Une nuit sur le mont Chauve - Single (Arr. by Nikolai Rimsky-Korsakov, Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83128d19b980a61bfafc3f7f4270e506114e110f0feee2cd63ab4551ec13efb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CZA160415163.
Národní umělci jubilejní sezóny - Eduard Haken
Leonid Kogan. Grand Collection. Vol. 1–5
Classical Music Experience - Famous Romantic Overtures
Musica antiqua bohemica, vol. 18 (Mono Version)