Bwca
type: MusicGroup
description: BWCA or Bwca may refer to: Boundary Waters Canoe Area Wilderness, in Minnesota, United States Bwca, a household spirit in Welsh mythology
popularity: 2
followers: 166
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd47f5ce80f11398c52dd92eff8cb458999ef4a04e6eadcda160f4dac9ef7dc28
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/6c4638af-8f85-4fff-88b7-fc63eb02419e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6c4638af-8f85-4fff-88b7-fc63eb02419e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6c4638af-8f85-4fff-88b7-fc63eb02419e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47f5ce80f11398c52dd92eff8cb458999ef4a04e6eadcda160f4dac9ef7dc28. 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/6c4638af-8f85-4fff-88b7-fc63eb02419e.json and https://artists.proofprofile.net/proofs/artist/6c4638af-8f85-4fff-88b7-fc63eb02419e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Weda I
  type: MusicAlbum
  date published: 2019-06-28
album: Tregaron
  type: MusicAlbum
  date published: 2020-04-03
album: Hiraeth Fydd (701)
  type: MusicAlbum
  date published: 2020-06-05
album: Elvis Rock
  type: MusicAlbum
  date published: 2020-07-17
album: Bwca
  type: MusicAlbum
  date published: 2021-01-29
album: Pwy Sy'n Byw'n Y Parrog
  type: MusicAlbum
  date published: 2021-10-01
album: Lawr yn y Vale
  type: MusicAlbum
  date published: 2021-12-03
album: Pam Dylen Ni Ddim?
  type: MusicAlbum
  date published: 2022-07-15
album: Hafod
  type: MusicAlbum
  date published: 2023-06-05
album: Machlud
  type: MusicAlbum
  date published: 2023-07-10
album: Hafod
  type: MusicAlbum
  date published: 2023-09-11
album: Llynnoedd Coed
  type: MusicAlbum
  date published: 2025-03-28
album: Draw Dros y Mynydd
  type: MusicAlbum
  date published: 2025-06-13
album: Pumlumon
  type: MusicAlbum
  date published: 2025-10-06