Grå vardag
type: MusicGroup
genre: punk
popularity: 9
followers: 720
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7e80bb24356da1b843ad146c53484bf19f2eac422edde52c2f577970fe1c3e00
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953980
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953980
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2c5db810-b245-4a92-ac5b-9ee3c97a6538.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2c5db810-b245-4a92-ac5b-9ee3c97a6538.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2c5db810-b245-4a92-ac5b-9ee3c97a6538
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T17:16:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7e80bb24356da1b843ad146c53484bf19f2eac422edde52c2f577970fe1c3e00","name":"Grå vardag","registered_at":"2026-06-16T04:58:14Z","symbol":"NIM0944592","token_address":"0x72d7804dcb1b86d302a6b7d2aa49c9d231ec0a77","type":"artist","uuid":"2c5db810-b245-4a92-ac5b-9ee3c97a6538"}
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 0x7e80bb24356da1b843ad146c53484bf19f2eac422edde52c2f577970fe1c3e00. Chain 2 (Bitcoin): anchored in block 953982 (2026-06-16T17:42:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c5db810-b245-4a92-ac5b-9ee3c97a6538.json and https://artists.proofprofile.net/proofs/artist/2c5db810-b245-4a92-ac5b-9ee3c97a6538.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T17:42:23Z
  text: {"copyright_id":"0x7e80bb24356da1b843ad146c53484bf19f2eac422edde52c2f577970fe1c3e00","name":"Grå vardag","registered_at":"2026-06-16T04:58:14Z","symbol":"NIM0944592","token_address":"0x72d7804dcb1b86d302a6b7d2aa49c9d231ec0a77","type":"artist","uuid":"2c5db810-b245-4a92-ac5b-9ee3c97a6538"}
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