Alexander Sladkovsky
type: MusicGroup
genre: classical
description: thumb|Alexander Sladkovsky in 2022 Alexander Sladkovsky (born 20 October 1965) is a Russian conductor. He is the chief conductor and artistic director of the Tatarstan National Symphony Orchestra. He
popularity: 6
followers: 181
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9374adfb5b1ea3abd11a3040b6eb0079bd2538b114dfef1ccc29f7357341a7f3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953972
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953972
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/29f5ec04-04b9-4e69-9746-60be23e137ba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/29f5ec04-04b9-4e69-9746-60be23e137ba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/29f5ec04-04b9-4e69-9746-60be23e137ba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:31:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9374adfb5b1ea3abd11a3040b6eb0079bd2538b114dfef1ccc29f7357341a7f3. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29f5ec04-04b9-4e69-9746-60be23e137ba.json and https://artists.proofprofile.net/proofs/artist/29f5ec04-04b9-4e69-9746-60be23e137ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:31:10Z
  text: {"copyright_id":"0x9374adfb5b1ea3abd11a3040b6eb0079bd2538b114dfef1ccc29f7357341a7f3","name":"Alexander Sladkovsky","registered_at":"2026-06-16T04:14:17Z","symbol":"NIM0934101","token_address":"0x0e5f926955c150679fcb4f2bd3731aec1cfbc982","type":"artist","uuid":"29f5ec04-04b9-4e69-9746-60be23e137ba"}
album: Shostakovich: Complete Symphonies
  type: MusicAlbum
  date published: 2017-10-20