Štěpán Halva
type: MusicGroup
popularity: 3
followers: 34
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6827ca3068b7490f69d09a717f8da709dd5036f33876a8349df0f53d13615012
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7da925da-6d82-47db-a331-6a090bc416e2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7da925da-6d82-47db-a331-6a090bc416e2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7da925da-6d82-47db-a331-6a090bc416e2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6827ca3068b7490f69d09a717f8da709dd5036f33876a8349df0f53d13615012","name":"Štěpán Halva","registered_at":"2026-06-17T09:47:57Z","symbol":"NIM1357311","token_address":"0xd51e686fc30c7f7bfe16f0bc78a44185eca771b3","type":"artist","uuid":"7da925da-6d82-47db-a331-6a090bc416e2"}
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 0x6827ca3068b7490f69d09a717f8da709dd5036f33876a8349df0f53d13615012. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7da925da-6d82-47db-a331-6a090bc416e2.json and https://artists.proofprofile.net/proofs/artist/7da925da-6d82-47db-a331-6a090bc416e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0x6827ca3068b7490f69d09a717f8da709dd5036f33876a8349df0f53d13615012","name":"Štěpán Halva","registered_at":"2026-06-17T09:47:57Z","symbol":"NIM1357311","token_address":"0xd51e686fc30c7f7bfe16f0bc78a44185eca771b3","type":"artist","uuid":"7da925da-6d82-47db-a331-6a090bc416e2"}
album: Ptáte se ?
  type: MusicAlbum
  date published: 2025-07-27