Цвайхандер
type: MusicGroup
popularity: 2
followers: 43
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x49779661cf6e21d8d2e5934a980548bc07f615e7da3ce9ce436a61fb62efa27b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953991
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953991
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2deda899-1090-45b3-b0e1-2a15907331a2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2deda899-1090-45b3-b0e1-2a15907331a2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2deda899-1090-45b3-b0e1-2a15907331a2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T18:47:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x49779661cf6e21d8d2e5934a980548bc07f615e7da3ce9ce436a61fb62efa27b","name":"Цвайхандер","registered_at":"2026-06-16T05:51:09Z","symbol":"NIM0957251","token_address":"0xb7e735d8e76b9c329b34aaf8e9a037fa2d106b32","type":"artist","uuid":"2deda899-1090-45b3-b0e1-2a15907331a2"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49779661cf6e21d8d2e5934a980548bc07f615e7da3ce9ce436a61fb62efa27b. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2deda899-1090-45b3-b0e1-2a15907331a2.json and https://artists.proofprofile.net/proofs/artist/2deda899-1090-45b3-b0e1-2a15907331a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T18:47:23Z
  text: {"copyright_id":"0x49779661cf6e21d8d2e5934a980548bc07f615e7da3ce9ce436a61fb62efa27b","name":"Цвайхандер","registered_at":"2026-06-16T05:51:09Z","symbol":"NIM0957251","token_address":"0xb7e735d8e76b9c329b34aaf8e9a037fa2d106b32","type":"artist","uuid":"2deda899-1090-45b3-b0e1-2a15907331a2"}
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