Ruja
type: MusicGroup
genre: devotional
genre: gospel
description: Ruja was one of the foremost Estonian rock bands of the 1970s and 1980s. The name of the band comes from a neologism "ruja", for science fiction, though there are people who believe that "ruja" is ac
popularity: 2
followers: 288
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc12deb421a930554d2bddef6e01db52d5d8a92b73c838309dc2424cf154f4154
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/1cd213cd-9e35-4283-9d4e-d2436e1a3fac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1cd213cd-9e35-4283-9d4e-d2436e1a3fac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1cd213cd-9e35-4283-9d4e-d2436e1a3fac
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12deb421a930554d2bddef6e01db52d5d8a92b73c838309dc2424cf154f4154. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cd213cd-9e35-4283-9d4e-d2436e1a3fac.json and https://artists.proofprofile.net/proofs/artist/1cd213cd-9e35-4283-9d4e-d2436e1a3fac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
album: Centro do Universo
  type: MusicAlbum
  date published: 2021-03-10
album: Manjedoura
  type: MusicAlbum
  date published: 2021-12-24