Sofia National Opera Orchestra
type: MusicGroup
genre: classical
genre: orchestra
popularity: 47
followers: 7064
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7c06124cbb4d2b855f1daae01d77a8e682458b296443ed41ecc37c764cc4346b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/545c05d5-cd34-4f2e-88f6-c89e10f340a4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/545c05d5-cd34-4f2e-88f6-c89e10f340a4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/545c05d5-cd34-4f2e-88f6-c89e10f340a4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7c06124cbb4d2b855f1daae01d77a8e682458b296443ed41ecc37c764cc4346b","name":"Sofia National Opera Orchestra","registered_at":"2026-06-11T20:58:19Z","symbol":"NIM0109694","token_address":"0xc908065ad7423f4e1f9be98ca2fb2267325432ae","type":"artist","uuid":"545c05d5-cd34-4f2e-88f6-c89e10f340a4"}
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 0x7c06124cbb4d2b855f1daae01d77a8e682458b296443ed41ecc37c764cc4346b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/545c05d5-cd34-4f2e-88f6-c89e10f340a4.json and https://artists.proofprofile.net/proofs/artist/545c05d5-cd34-4f2e-88f6-c89e10f340a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x7c06124cbb4d2b855f1daae01d77a8e682458b296443ed41ecc37c764cc4346b","name":"Sofia National Opera Orchestra","registered_at":"2026-06-11T20:58:19Z","symbol":"NIM0109694","token_address":"0xc908065ad7423f4e1f9be98ca2fb2267325432ae","type":"artist","uuid":"545c05d5-cd34-4f2e-88f6-c89e10f340a4"}
album: Adriana Stamenova: Opera Recital
  type: MusicAlbum
  date published: 1981-02-06
album: Valeri Popova: Opera Recital
  type: MusicAlbum
  date published: 1982-04-15
album: Николай Стойлов: Арии из из русских опер
  type: MusicAlbum
  date published: 1988-04-10
album: Христина Ангелакова: Сольный концерт оперы
  type: MusicAlbum
  date published: 1992-12-28