John Gourley
type: MusicGroup
description: John Baldwin Gourley (born June 12, 1981) is an American musician, singer, and songwriter from Alaska. He is the founder, lead singer and rhythm guitarist of the rock band Portugal. The Man, with the
popularity: 7
followers: 80
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xef52a0e3eb93df903dad2d56cd9f50d1fe184c6824d45fe8ee7cdbd454eed936
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8d873be0-c3b0-48c1-a11f-8c8beb61d2d6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8d873be0-c3b0-48c1-a11f-8c8beb61d2d6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8d873be0-c3b0-48c1-a11f-8c8beb61d2d6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xef52a0e3eb93df903dad2d56cd9f50d1fe184c6824d45fe8ee7cdbd454eed936","name":"John Gourley","registered_at":"2026-06-17T15:04:01Z","symbol":"NIM1432616","token_address":"0x00762a5d727c90e27e311fdaacdb76a6d10553ea","type":"artist","uuid":"8d873be0-c3b0-48c1-a11f-8c8beb61d2d6"}
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 0xef52a0e3eb93df903dad2d56cd9f50d1fe184c6824d45fe8ee7cdbd454eed936. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d873be0-c3b0-48c1-a11f-8c8beb61d2d6.json and https://artists.proofprofile.net/proofs/artist/8d873be0-c3b0-48c1-a11f-8c8beb61d2d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xef52a0e3eb93df903dad2d56cd9f50d1fe184c6824d45fe8ee7cdbd454eed936","name":"John Gourley","registered_at":"2026-06-17T15:04:01Z","symbol":"NIM1432616","token_address":"0x00762a5d727c90e27e311fdaacdb76a6d10553ea","type":"artist","uuid":"8d873be0-c3b0-48c1-a11f-8c8beb61d2d6"}