Christa Williams
type: MusicGroup
genre: schlager
description: Christa Williams (born: Christa Bojarzin 5 February 1926 – 28 or 29 July 2012) was a German pop singer most popular in the late 1950s and early 1960s. Williams was chosen to represent Switzerland at
popularity: 3
followers: 132
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd7ca9f3907856fcc369eea62d82e30518acc77db14d9aaecc4ff7dc413f24f71
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/58100e93-3788-4458-81df-74f00bdda88e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/58100e93-3788-4458-81df-74f00bdda88e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/58100e93-3788-4458-81df-74f00bdda88e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd7ca9f3907856fcc369eea62d82e30518acc77db14d9aaecc4ff7dc413f24f71","name":"Christa Williams","registered_at":"2026-06-16T20:37:36Z","symbol":"NIM1168778","token_address":"0x72fff53b7a79ad57f7cf731c16b741ba4c9d9b22","type":"artist","uuid":"58100e93-3788-4458-81df-74f00bdda88e"}
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 0xd7ca9f3907856fcc369eea62d82e30518acc77db14d9aaecc4ff7dc413f24f71. 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/58100e93-3788-4458-81df-74f00bdda88e.json and https://artists.proofprofile.net/proofs/artist/58100e93-3788-4458-81df-74f00bdda88e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xd7ca9f3907856fcc369eea62d82e30518acc77db14d9aaecc4ff7dc413f24f71","name":"Christa Williams","registered_at":"2026-06-16T20:37:36Z","symbol":"NIM1168778","token_address":"0x72fff53b7a79ad57f7cf731c16b741ba4c9d9b22","type":"artist","uuid":"58100e93-3788-4458-81df-74f00bdda88e"}
album: Kamm, Sang und Siegte!
  type: MusicAlbum
  date published: 2022-01-06
album: Irgendwoher
  type: MusicAlbum
  date published: 2022-01-06
album: Dort Wo Dunkelrot die Traube GlÜhn
  type: MusicAlbum
  date published: 2022-01-06