Joseph Callender
type: MusicGroup
popularity: 2
followers: 103
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x17e0ea474883c1aaa2960f85482411198f731855c4d5ec62a0673d3f7192c49b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/73264c77-5795-46a6-9d03-fe41e8f3da1e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/73264c77-5795-46a6-9d03-fe41e8f3da1e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/73264c77-5795-46a6-9d03-fe41e8f3da1e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x17e0ea474883c1aaa2960f85482411198f731855c4d5ec62a0673d3f7192c49b","name":"Joseph Callender","registered_at":"2026-06-17T06:09:07Z","symbol":"NIM1305147","token_address":"0x617f4ae3b8c47da37cb0f82128cb2de58aa6ef86","type":"artist","uuid":"73264c77-5795-46a6-9d03-fe41e8f3da1e"}
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 0x17e0ea474883c1aaa2960f85482411198f731855c4d5ec62a0673d3f7192c49b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73264c77-5795-46a6-9d03-fe41e8f3da1e.json and https://artists.proofprofile.net/proofs/artist/73264c77-5795-46a6-9d03-fe41e8f3da1e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x17e0ea474883c1aaa2960f85482411198f731855c4d5ec62a0673d3f7192c49b","name":"Joseph Callender","registered_at":"2026-06-17T06:09:07Z","symbol":"NIM1305147","token_address":"0x617f4ae3b8c47da37cb0f82128cb2de58aa6ef86","type":"artist","uuid":"73264c77-5795-46a6-9d03-fe41e8f3da1e"}
album: De Date
  type: MusicAlbum
  date published: 2020-06-19
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  type: MusicAlbum
  date published: 2021-07-16
album: Utter Surrender
  type: MusicAlbum
  date published: 2021-10-22
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  type: MusicAlbum
  date published: 2023-08-04
album: Octave Soul
  type: MusicAlbum
  date published: 2023-11-22
album: All That Fall (Get Back Up)
  type: MusicAlbum
  date published: 2024-11-26