Katharine Whalen
type: MusicGroup
description: Katharine Whalen is a musician, singer, and songwriter originally from Greenville, North Carolina. She contributed vocals, banjo, and ukulele as a member of the Chapel Hill jazz band Squirrel Nut Zipp
popularity: 10
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e12b608800877189cfb04a61d2ff712055942781ba914e957c5924291965854
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4003b1ec-8d77-4ea5-9e61-366e78c31ba0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4003b1ec-8d77-4ea5-9e61-366e78c31ba0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4003b1ec-8d77-4ea5-9e61-366e78c31ba0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0e12b608800877189cfb04a61d2ff712055942781ba914e957c5924291965854","name":"Katharine Whalen","registered_at":"2026-06-16T11:53:11Z","symbol":"NIM1043655","token_address":"0x23671f4c4024096e7cfbb3cffbf6a8e2026d18de","type":"artist","uuid":"4003b1ec-8d77-4ea5-9e61-366e78c31ba0"}
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 0x0e12b608800877189cfb04a61d2ff712055942781ba914e957c5924291965854. 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/4003b1ec-8d77-4ea5-9e61-366e78c31ba0.json and https://artists.proofprofile.net/proofs/artist/4003b1ec-8d77-4ea5-9e61-366e78c31ba0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x0e12b608800877189cfb04a61d2ff712055942781ba914e957c5924291965854","name":"Katharine Whalen","registered_at":"2026-06-16T11:53:11Z","symbol":"NIM1043655","token_address":"0x23671f4c4024096e7cfbb3cffbf6a8e2026d18de","type":"artist","uuid":"4003b1ec-8d77-4ea5-9e61-366e78c31ba0"}