Oregon Repertory Singers
type: MusicGroup
genre: choral
description: The Oregon Repertory Singers (ORS) is a mixed vocal ensemble in Portland, Oregon, founded in 1974. The choir performs a wide range of works from all time periods and languages, although over the year
popularity: 5
followers: 225
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x73870e0639600300bea70f3246a5b6d551a1d2d5f967e32c7b36e875e3713e56
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/230376be-9849-4100-bf60-8d946281c9e6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/230376be-9849-4100-bf60-8d946281c9e6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/230376be-9849-4100-bf60-8d946281c9e6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:14:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x73870e0639600300bea70f3246a5b6d551a1d2d5f967e32c7b36e875e3713e56","name":"Oregon Repertory Singers","registered_at":"2026-06-16T01:40:33Z","symbol":"NIM0897383","token_address":"0x5c4a746bf896461efc5a60af29311dc3575b4448","type":"artist","uuid":"230376be-9849-4100-bf60-8d946281c9e6"}
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 0x73870e0639600300bea70f3246a5b6d551a1d2d5f967e32c7b36e875e3713e56. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/230376be-9849-4100-bf60-8d946281c9e6.json and https://artists.proofprofile.net/proofs/artist/230376be-9849-4100-bf60-8d946281c9e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x73870e0639600300bea70f3246a5b6d551a1d2d5f967e32c7b36e875e3713e56","name":"Oregon Repertory Singers","registered_at":"2026-06-16T01:40:33Z","symbol":"NIM0897383","token_address":"0x5c4a746bf896461efc5a60af29311dc3575b4448","type":"artist","uuid":"230376be-9849-4100-bf60-8d946281c9e6"}
album: Masses Of Arvo Part And Lou Harrison
  type: MusicAlbum
  date published: 1993-09-20
album: Masses Of Arvo Part And Lou Harrison
  type: MusicAlbum
  date published: 1993-09-20
album: "Glory Of Christmas": Choral Christmas Favorites
  type: MusicAlbum
  date published: 1996-09-01
album: Shadows on the Stars
  type: MusicAlbum
  date published: 2018-10-19
album: Shadows on the Stars
  type: MusicAlbum
  date published: 2018-10-19
album: 50
  type: MusicAlbum
  date published: 2023-11-17