Vilem Sokol
type: MusicGroup
description: thumb|right|300px|Vilem Sokol at 90 Vilem Sokol (May 22, 1915 – August 19, 2011) was a Czech-American conductor and professor of music at the University of Washington from 1948 to 1985. He served as
popularity: 3
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3d71a9f3265e48c01bcfe17d08a5aedcfba1d89a02875ac8cee940b4a97ca4e5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae59eab0-dba9-48f4-ba9c-1b1b46291f37.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae59eab0-dba9-48f4-ba9c-1b1b46291f37.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ae59eab0-dba9-48f4-ba9c-1b1b46291f37
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3d71a9f3265e48c01bcfe17d08a5aedcfba1d89a02875ac8cee940b4a97ca4e5","name":"Vilem Sokol","registered_at":"2026-06-20T11:14:15Z","symbol":"NIM1598615","token_address":"0x13e86420e03540bfeb4b65f5712fff42c80cd91c","type":"artist","uuid":"ae59eab0-dba9-48f4-ba9c-1b1b46291f37"}
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 0x3d71a9f3265e48c01bcfe17d08a5aedcfba1d89a02875ac8cee940b4a97ca4e5. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae59eab0-dba9-48f4-ba9c-1b1b46291f37.json and https://artists.proofprofile.net/proofs/artist/ae59eab0-dba9-48f4-ba9c-1b1b46291f37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:14:15Z
  text: {"copyright_id":"0x3d71a9f3265e48c01bcfe17d08a5aedcfba1d89a02875ac8cee940b4a97ca4e5","name":"Vilem Sokol","registered_at":"2026-06-20T11:14:15Z","symbol":"NIM1598615","token_address":"0x13e86420e03540bfeb4b65f5712fff42c80cd91c","type":"artist","uuid":"ae59eab0-dba9-48f4-ba9c-1b1b46291f37"}