Sigrid Vass
type: MusicGroup
popularity: 23
followers: 726
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe35825887407d547f5bf793417274a610f9646ad00b17a8fac79b0970c64dcf6
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/0ef169b0-d68f-4a33-bf3f-1703ec57958b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ef169b0-d68f-4a33-bf3f-1703ec57958b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0ef169b0-d68f-4a33-bf3f-1703ec57958b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe35825887407d547f5bf793417274a610f9646ad00b17a8fac79b0970c64dcf6","name":"Sigrid Vass","registered_at":"2026-06-12T18:23:21Z","symbol":"NIM0335172","token_address":"0xce27ee0d6697a2587433ab6a03bba9e7bb99766d","type":"artist","uuid":"0ef169b0-d68f-4a33-bf3f-1703ec57958b"}
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 0xe35825887407d547f5bf793417274a610f9646ad00b17a8fac79b0970c64dcf6. 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/0ef169b0-d68f-4a33-bf3f-1703ec57958b.json and https://artists.proofprofile.net/proofs/artist/0ef169b0-d68f-4a33-bf3f-1703ec57958b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xe35825887407d547f5bf793417274a610f9646ad00b17a8fac79b0970c64dcf6","name":"Sigrid Vass","registered_at":"2026-06-12T18:23:21Z","symbol":"NIM0335172","token_address":"0xce27ee0d6697a2587433ab6a03bba9e7bb99766d","type":"artist","uuid":"0ef169b0-d68f-4a33-bf3f-1703ec57958b"}
album: Cloudless
  type: MusicAlbum
  date published: 2019-08-09
album: Legato
  type: MusicAlbum
  date published: 2019-08-16
album: Aquatic
  type: MusicAlbum
  date published: 2019-10-17