Bleecker
type: MusicGroup
description: Bleecker is a Dutch-language occupational surname. Bleecker is an old spelling of (linnen)bleker ("linen bleacher"). Most if not all people listed below are descendants of Jan Jansen Bleecker/Bleeker,
popularity: 33
followers: 928
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4848e5d4edf21ea04edc46b80b310f9bb37e5efae614975a3f40965bf70a9f2d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953423
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953423
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fab42d97-1e07-4352-b9d6-473caa4b7899.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fab42d97-1e07-4352-b9d6-473caa4b7899.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fab42d97-1e07-4352-b9d6-473caa4b7899
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T21:20:00Z
additional property: OTSCanonicalRecord
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 0x4848e5d4edf21ea04edc46b80b310f9bb37e5efae614975a3f40965bf70a9f2d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fab42d97-1e07-4352-b9d6-473caa4b7899.json and https://artists.proofprofile.net/proofs/artist/fab42d97-1e07-4352-b9d6-473caa4b7899.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
album: Just Another Last One
  type: MusicAlbum
  date published: 2002
album: Subject to Change
  type: MusicAlbum
  date published: 2005
album: What the vultures left behind
  type: MusicAlbum
  date published: 2007
album: Sanity
  type: MusicAlbum
  date published: 2012-08-22
album: Once Again
  type: MusicAlbum
  date published: 2013-11-21
album: Once Again
  type: MusicAlbum
  date published: 2013-11-21
album: Radiant
  type: MusicAlbum
  date published: 2020-09-09