Mr. Fer
type: MusicGroup
popularity: 5
followers: 499
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeb3b9e6be9abbe570e4c7f8e79da6949766dd9fdd2fa1b66a391435c392d93cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2fd1c31-68b6-4289-9aed-8f048446393f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2fd1c31-68b6-4289-9aed-8f048446393f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b2fd1c31-68b6-4289-9aed-8f048446393f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xeb3b9e6be9abbe570e4c7f8e79da6949766dd9fdd2fa1b66a391435c392d93cc","name":"Mr. Fer","registered_at":"2026-06-20T13:35:10Z","symbol":"NIM1621588","token_address":"0x5cb9445db36ff0b81cf5f7ade311fd49308576cf","type":"artist","uuid":"b2fd1c31-68b6-4289-9aed-8f048446393f"}
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 0xeb3b9e6be9abbe570e4c7f8e79da6949766dd9fdd2fa1b66a391435c392d93cc. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2fd1c31-68b6-4289-9aed-8f048446393f.json and https://artists.proofprofile.net/proofs/artist/b2fd1c31-68b6-4289-9aed-8f048446393f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xeb3b9e6be9abbe570e4c7f8e79da6949766dd9fdd2fa1b66a391435c392d93cc","name":"Mr. Fer","registered_at":"2026-06-20T13:35:10Z","symbol":"NIM1621588","token_address":"0x5cb9445db36ff0b81cf5f7ade311fd49308576cf","type":"artist","uuid":"b2fd1c31-68b6-4289-9aed-8f048446393f"}
album: Guerreros del Under
  type: MusicAlbum
  date published: 2024-02-16