Donald Johanos
type: MusicGroup
description: thumb|Donald Johanos (1963) Donald George Johanos (February 10, 1928 – May 29, 2007) was a conductor and music director with the Dallas Symphony Orchestra and the Honolulu Symphony Orchestra. He was r
popularity: 11
followers: 61
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdecc0a7dd18bd6238c098696de982eb0e92330100b250593c8aba1c00fde7f71
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4dd0f8c4-2c3b-469d-ae28-ef7426fe7653.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4dd0f8c4-2c3b-469d-ae28-ef7426fe7653.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4dd0f8c4-2c3b-469d-ae28-ef7426fe7653
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdecc0a7dd18bd6238c098696de982eb0e92330100b250593c8aba1c00fde7f71","name":"Donald Johanos","registered_at":"2026-06-14T12:35:32Z","symbol":"NIM0454694","token_address":"0xc1a6713774332a4e19758cd01788037fb7e2bbe4","type":"artist","uuid":"4dd0f8c4-2c3b-469d-ae28-ef7426fe7653"}
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 0xdecc0a7dd18bd6238c098696de982eb0e92330100b250593c8aba1c00fde7f71. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4dd0f8c4-2c3b-469d-ae28-ef7426fe7653.json and https://artists.proofprofile.net/proofs/artist/4dd0f8c4-2c3b-469d-ae28-ef7426fe7653.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0xdecc0a7dd18bd6238c098696de982eb0e92330100b250593c8aba1c00fde7f71","name":"Donald Johanos","registered_at":"2026-06-14T12:35:32Z","symbol":"NIM0454694","token_address":"0xc1a6713774332a4e19758cd01788037fb7e2bbe4","type":"artist","uuid":"4dd0f8c4-2c3b-469d-ae28-ef7426fe7653"}
album: American Orchestral Music
  type: MusicAlbum
  date published: 1993-01-01
album: 50 of the Best: Romantic Symphonies
  type: MusicAlbum
  date published: 2012-02-15