Broc
type: MusicGroup
description: Broc ( or ; ; or , ) is a municipality in the district of Gruyère in the canton of Fribourg in Switzerland. History Broc is first mentioned in 1115 as Broc and Broch. The municipality was formerly k
popularity: 14
followers: 52
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x38808a2abf9f8585aa8f09ef25b2d7040395c03915dd6f26197b5db2b6cbb39b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/56a2f2a9-ce75-4dc6-8505-4bca94a4ebe0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/56a2f2a9-ce75-4dc6-8505-4bca94a4ebe0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/56a2f2a9-ce75-4dc6-8505-4bca94a4ebe0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T17:49:01Z
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 0x38808a2abf9f8585aa8f09ef25b2d7040395c03915dd6f26197b5db2b6cbb39b. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56a2f2a9-ce75-4dc6-8505-4bca94a4ebe0.json and https://artists.proofprofile.net/proofs/artist/56a2f2a9-ce75-4dc6-8505-4bca94a4ebe0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T17:49:01Z
album: Raw Essence
  type: MusicAlbum
  date published: 2005
album: esclavage mental
  type: MusicAlbum
  date published: 2005-04-01
album: raw essence
  type: MusicAlbum
  date published: 2005-04-01
album: Broc versus black 10'
  type: MusicAlbum
  date published: 2012-02-15
album: Qui sait
  type: MusicAlbum
  date published: 2012-10-15
album: Des trucs qui poussent
  type: MusicAlbum
  date published: 2013-02-04