Spyros Gkoumas
type: MusicGroup
popularity: 11
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f5be4f649df07b419d731fb5e7f6517572ee933473495066c439abf7ca03ab5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d12a376-1284-4f5c-8402-b72d3405f943.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d12a376-1284-4f5c-8402-b72d3405f943.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4d12a376-1284-4f5c-8402-b72d3405f943
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0f5be4f649df07b419d731fb5e7f6517572ee933473495066c439abf7ca03ab5","name":"Spyros Gkoumas","registered_at":"2026-06-14T12:31:18Z","symbol":"NIM0453695","token_address":"0x7d22b233993cb42cbacaae7b9bec69fe897a7039","type":"artist","uuid":"4d12a376-1284-4f5c-8402-b72d3405f943"}
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 0x0f5be4f649df07b419d731fb5e7f6517572ee933473495066c439abf7ca03ab5. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d12a376-1284-4f5c-8402-b72d3405f943.json and https://artists.proofprofile.net/proofs/artist/4d12a376-1284-4f5c-8402-b72d3405f943.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0x0f5be4f649df07b419d731fb5e7f6517572ee933473495066c439abf7ca03ab5","name":"Spyros Gkoumas","registered_at":"2026-06-14T12:31:18Z","symbol":"NIM0453695","token_address":"0x7d22b233993cb42cbacaae7b9bec69fe897a7039","type":"artist","uuid":"4d12a376-1284-4f5c-8402-b72d3405f943"}