BKR
type: MusicGroup
description: BKR may refer to: Baker, U.S. Navy rank Postal code for Birkirkara, Malta National Rail station code for Blackridge railway station, West Lothian, Scotland Brad Keselowski Racing, a former stock car
popularity: 5
followers: 135
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66084da34080e2114857a1717c8931957d15d9cd88f8c24c83a49d4b1e5c2dec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953923
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953923
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1cff5246-f32c-48db-ab39-d0704f6584d9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1cff5246-f32c-48db-ab39-d0704f6584d9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1cff5246-f32c-48db-ab39-d0704f6584d9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:51:37Z
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 0x66084da34080e2114857a1717c8931957d15d9cd88f8c24c83a49d4b1e5c2dec. Chain 2 (Bitcoin): anchored in block 953923 (2026-06-16T09:51:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cff5246-f32c-48db-ab39-d0704f6584d9.json and https://artists.proofprofile.net/proofs/artist/1cff5246-f32c-48db-ab39-d0704f6584d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:51:37Z
album: Brazilian Heat
  type: MusicAlbum
  date published: 2005-08-31
album: Sao Paulo EP
  type: MusicAlbum
  date published: 2006-09-21
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  type: MusicAlbum
  date published: 2008-03-17
album: Fearlessness
  type: MusicAlbum
  date published: 2022-05-05
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  type: MusicAlbum
  date published: 2023-08-05