Zag
type: MusicGroup
description: Zag or ZAG may refer to: Places Zag, Kentucky, US Zag, Mongolia, a district Zag, Morocco, a town Zagreb Airport, Croatia IATA airport code People Zag de Sujurmenza, 13th-century Spanish astronomer Z
popularity: 5
followers: 17
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x67a0f1d60a3be8882fa8acb3baa4ee45b6a7b22a80b82b7e60c53bdf14f01476
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953857
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953857
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/031f862d-81aa-4502-af35-990a5b1b21dc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/031f862d-81aa-4502-af35-990a5b1b21dc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/031f862d-81aa-4502-af35-990a5b1b21dc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:34:38Z
additional property: OTSCanonicalRecord
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a0f1d60a3be8882fa8acb3baa4ee45b6a7b22a80b82b7e60c53bdf14f01476. Chain 2 (Bitcoin): anchored in block 953857 (2026-06-15T23:34:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/031f862d-81aa-4502-af35-990a5b1b21dc.json and https://artists.proofprofile.net/proofs/artist/031f862d-81aa-4502-af35-990a5b1b21dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T23:34:38Z
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