Vaggelis Chatzigiannis
type: MusicGroup
popularity: 2
followers: 117
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15847af25886e9cac190d2162558d1614e65c5d7d0a5526affcdab0100ff3947
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953962
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953962
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27ea974e-cc23-45be-966f-d4ad571d8707.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27ea974e-cc23-45be-966f-d4ad571d8707.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27ea974e-cc23-45be-966f-d4ad571d8707
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T15:03:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x15847af25886e9cac190d2162558d1614e65c5d7d0a5526affcdab0100ff3947","name":"Vaggelis Chatzigiannis","registered_at":"2026-06-16T03:27:04Z","symbol":"NIM0922818","token_address":"0xeb2cf094f7db3ed18cc5241e39635f40a0553109","type":"artist","uuid":"27ea974e-cc23-45be-966f-d4ad571d8707"}
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 0x15847af25886e9cac190d2162558d1614e65c5d7d0a5526affcdab0100ff3947. Chain 2 (Bitcoin): anchored in block 953962 (2026-06-16T15:03:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27ea974e-cc23-45be-966f-d4ad571d8707.json and https://artists.proofprofile.net/proofs/artist/27ea974e-cc23-45be-966f-d4ad571d8707.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T15:03:47Z
  text: {"copyright_id":"0x15847af25886e9cac190d2162558d1614e65c5d7d0a5526affcdab0100ff3947","name":"Vaggelis Chatzigiannis","registered_at":"2026-06-16T03:27:04Z","symbol":"NIM0922818","token_address":"0xeb2cf094f7db3ed18cc5241e39635f40a0553109","type":"artist","uuid":"27ea974e-cc23-45be-966f-d4ad571d8707"}