Kacen Callender
type: MusicGroup
description: Kacen Callender (born September 19, 1989) is a Saint Thomian author of children's fiction and fantasy, best known for their Stonewall Book Award and Lambda Literary Award—winning middle grade debut Hu
popularity: 16
followers: 213
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe303b72406fbafaa026350712d2a40d916adba4387d76cae44082fe7cb17290f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82c66631-803d-4b45-babb-02c20eb141fb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82c66631-803d-4b45-babb-02c20eb141fb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/82c66631-803d-4b45-babb-02c20eb141fb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe303b72406fbafaa026350712d2a40d916adba4387d76cae44082fe7cb17290f","name":"Kacen Callender","registered_at":"2026-06-14T18:15:56Z","symbol":"NIM0535901","token_address":"0x86afd54a31f4cb7b5a0971b7f31c7b6be6a7ef38","type":"artist","uuid":"82c66631-803d-4b45-babb-02c20eb141fb"}
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 0xe303b72406fbafaa026350712d2a40d916adba4387d76cae44082fe7cb17290f. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82c66631-803d-4b45-babb-02c20eb141fb.json and https://artists.proofprofile.net/proofs/artist/82c66631-803d-4b45-babb-02c20eb141fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xe303b72406fbafaa026350712d2a40d916adba4387d76cae44082fe7cb17290f","name":"Kacen Callender","registered_at":"2026-06-14T18:15:56Z","symbol":"NIM0535901","token_address":"0x86afd54a31f4cb7b5a0971b7f31c7b6be6a7ef38","type":"artist","uuid":"82c66631-803d-4b45-babb-02c20eb141fb"}
album: King and the Dragonflies (Unabridged)
  type: MusicAlbum
  date published: 2020-02-04
album: King and the Dragonflies (Unabridged)
  type: MusicAlbum
  date published: 2020-02-04
album: Felix Ever After (Ungekürzt)
  type: MusicAlbum
  date published: 2022-01-31
album: How do I tell them I love them? (Ungekürzt)
  type: MusicAlbum
  date published: 2022-12-23