Rowena
type: MusicGroup
description: thumb|Vortigern and Rowena, by William Hamilton Rowena in the Matter of Britain was the daughter of the purported Anglo-Saxon chief Hengist and wife of Vortigern, "King of the Britons". Presented as
popularity: 2
followers: 171
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0428b4e3b17741cca88c0f3cc36136c6d637b480a4786a7614177e7fc100fc7e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fb55f7c8-35a3-4fdd-96ca-ff75300a3a49.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fb55f7c8-35a3-4fdd-96ca-ff75300a3a49.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fb55f7c8-35a3-4fdd-96ca-ff75300a3a49
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
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 0x0428b4e3b17741cca88c0f3cc36136c6d637b480a4786a7614177e7fc100fc7e. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb55f7c8-35a3-4fdd-96ca-ff75300a3a49.json and https://artists.proofprofile.net/proofs/artist/fb55f7c8-35a3-4fdd-96ca-ff75300a3a49.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
album: My Mother's Song
  type: MusicAlbum
  date published: 2000-08-08
album: My Mother's Song
  type: MusicAlbum
  date published: 2003-01-01
album: Lach
  type: MusicAlbum
  date published: 2008-05-05
album: Lach
  type: MusicAlbum
  date published: 2011-05-12
album: Laat me even
  type: MusicAlbum
  date published: 2015-05-08
album: Laat me even
  type: MusicAlbum
  date published: 2015-05-08
album: Iedere Dag
  type: MusicAlbum
  date published: 2016-07-22
album: Iedere Dag
  type: MusicAlbum
  date published: 2016-07-22
album: In Je Punani Bitch
  type: MusicAlbum
  date published: 2018-07-19
album: Liever Alleen
  type: MusicAlbum
  date published: 2019-05-23
album: Liever Alleen
  type: MusicAlbum
  date published: 2019-05-23
album: Hast du schon mal den Wind gesehn
  type: MusicAlbum
  date published: 2020-09-22
album: Zugweg Blues
  type: MusicAlbum
  date published: 2020-09-22