Theodore Koumartzis
type: MusicGroup
popularity: 4
followers: 224
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf4c720523dd686ccf0f2461c0c78aa7b149d75f92cbd34410f234d721b45b8dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12587cbe-c78f-4b18-8e88-e5cfb3e8cc2e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12587cbe-c78f-4b18-8e88-e5cfb3e8cc2e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/12587cbe-c78f-4b18-8e88-e5cfb3e8cc2e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf4c720523dd686ccf0f2461c0c78aa7b149d75f92cbd34410f234d721b45b8dc","name":"Theodore Koumartzis","registered_at":"2026-06-15T19:52:45Z","symbol":"NIM0814386","token_address":"0x1461c200f749f7f52208ace1afe034dd7c8bcc07","type":"artist","uuid":"12587cbe-c78f-4b18-8e88-e5cfb3e8cc2e"}
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 0xf4c720523dd686ccf0f2461c0c78aa7b149d75f92cbd34410f234d721b45b8dc. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12587cbe-c78f-4b18-8e88-e5cfb3e8cc2e.json and https://artists.proofprofile.net/proofs/artist/12587cbe-c78f-4b18-8e88-e5cfb3e8cc2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xf4c720523dd686ccf0f2461c0c78aa7b149d75f92cbd34410f234d721b45b8dc","name":"Theodore Koumartzis","registered_at":"2026-06-15T19:52:45Z","symbol":"NIM0814386","token_address":"0x1461c200f749f7f52208ace1afe034dd7c8bcc07","type":"artist","uuid":"12587cbe-c78f-4b18-8e88-e5cfb3e8cc2e"}