Throwback Zack
type: MusicGroup
popularity: 4
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x49e07daa868326dc7851ad90ff19ac33d981226688bad9703541f8f89db4a3ef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b1913a58-a5d3-415c-ada1-a8787e9d34ab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b1913a58-a5d3-415c-ada1-a8787e9d34ab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b1913a58-a5d3-415c-ada1-a8787e9d34ab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x49e07daa868326dc7851ad90ff19ac33d981226688bad9703541f8f89db4a3ef","name":"Throwback Zack","registered_at":"2026-06-20T12:24:06Z","symbol":"NIM1612237","token_address":"0xd9202e5517d18dcf52d7914b43335b52fa680e26","type":"artist","uuid":"b1913a58-a5d3-415c-ada1-a8787e9d34ab"}
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 0x49e07daa868326dc7851ad90ff19ac33d981226688bad9703541f8f89db4a3ef. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1913a58-a5d3-415c-ada1-a8787e9d34ab.json and https://artists.proofprofile.net/proofs/artist/b1913a58-a5d3-415c-ada1-a8787e9d34ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x49e07daa868326dc7851ad90ff19ac33d981226688bad9703541f8f89db4a3ef","name":"Throwback Zack","registered_at":"2026-06-20T12:24:06Z","symbol":"NIM1612237","token_address":"0xd9202e5517d18dcf52d7914b43335b52fa680e26","type":"artist","uuid":"b1913a58-a5d3-415c-ada1-a8787e9d34ab"}