Boris Karlov
type: MusicGroup
description: Boris Karlov (; August 11, 1924 – December 14, 1964) was a Bulgarian accordionist. He was born in Sofia into a Romani (Gypsy) family. His father Karlo Aliev conducted an orchestra that was often heard
popularity: 4
followers: 520
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd0fa7b1e0ee839e9fd856b7e42127ff87f16d467961534bb8811e03797a623a5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/afe1d4f6-f3f0-4018-8e91-2323dae0a060.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/afe1d4f6-f3f0-4018-8e91-2323dae0a060.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/afe1d4f6-f3f0-4018-8e91-2323dae0a060
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd0fa7b1e0ee839e9fd856b7e42127ff87f16d467961534bb8811e03797a623a5","name":"Boris Karlov","registered_at":"2026-06-20T11:50:34Z","symbol":"NIM1605072","token_address":"0xbcf89a66177085c62295a35695dace648b1e4562","type":"artist","uuid":"afe1d4f6-f3f0-4018-8e91-2323dae0a060"}
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 0xd0fa7b1e0ee839e9fd856b7e42127ff87f16d467961534bb8811e03797a623a5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afe1d4f6-f3f0-4018-8e91-2323dae0a060.json and https://artists.proofprofile.net/proofs/artist/afe1d4f6-f3f0-4018-8e91-2323dae0a060.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xd0fa7b1e0ee839e9fd856b7e42127ff87f16d467961534bb8811e03797a623a5","name":"Boris Karlov","registered_at":"2026-06-20T11:50:34Z","symbol":"NIM1605072","token_address":"0xbcf89a66177085c62295a35695dace648b1e4562","type":"artist","uuid":"afe1d4f6-f3f0-4018-8e91-2323dae0a060"}
album: Еленино хоро
  type: MusicAlbum
  date published: 1954-04-26
album: Четворно хоро
  type: MusicAlbum
  date published: 1960-05-15
album: Криво хоро
  type: MusicAlbum
  date published: 1962-03-30
album: Граовско хоро
  type: MusicAlbum
  date published: 1963-02-08
album: Дайчово хоро
  type: MusicAlbum
  date published: 1968-04-01
album: Четворно хоро
  type: MusicAlbum
  date published: 1981-08-11
album: Борис Карлов: Акордеон
  type: MusicAlbum
  date published: 1998-10-09
album: Akordeón Hudba, Vol. 1
  type: MusicAlbum
  date published: 2013-01-27
album: Akordeón Hudba, Vol. 2
  type: MusicAlbum
  date published: 2013-01-28