The Boswell sisters
type: MusicGroup
description: The Boswell Sisters were an American close harmony singing trio of the jazz and swing eras, consisting of three sisters: Martha Boswell (June 9, 1905 – July 2, 1958), Connie Boswell (later spelled "Co
popularity: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6e246a0965a1d0cf62b893bb3caf29c7bc664946d4e6690a3e33a6b65fdeb8d1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954000
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954000
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/310f65a5-0b40-4595-9787-f70a46bfff37.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/310f65a5-0b40-4595-9787-f70a46bfff37.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/310f65a5-0b40-4595-9787-f70a46bfff37
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:18:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6e246a0965a1d0cf62b893bb3caf29c7bc664946d4e6690a3e33a6b65fdeb8d1","name":"The Boswell sisters","registered_at":"2026-06-16T06:56:25Z","symbol":"NIM0972829","token_address":"0xf290929681aa9af326548cde9e193aeabe98a3e0","type":"artist","uuid":"310f65a5-0b40-4595-9787-f70a46bfff37"}
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 0x6e246a0965a1d0cf62b893bb3caf29c7bc664946d4e6690a3e33a6b65fdeb8d1. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/310f65a5-0b40-4595-9787-f70a46bfff37.json and https://artists.proofprofile.net/proofs/artist/310f65a5-0b40-4595-9787-f70a46bfff37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x6e246a0965a1d0cf62b893bb3caf29c7bc664946d4e6690a3e33a6b65fdeb8d1","name":"The Boswell sisters","registered_at":"2026-06-16T06:56:25Z","symbol":"NIM0972829","token_address":"0xf290929681aa9af326548cde9e193aeabe98a3e0","type":"artist","uuid":"310f65a5-0b40-4595-9787-f70a46bfff37"}