Ars Nova Secunda
type: MusicGroup
genre: choral
genre: gregorian chant
genre: medieval
popularity: 15
followers: 181
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0a109bae1d18376879389caa4373fb50fe66a64cd7fce4f54e92a0a59ad70255
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953641
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953641
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3accc3d9-854f-4bea-b0b2-26ab991efa2b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3accc3d9-854f-4bea-b0b2-26ab991efa2b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3accc3d9-854f-4bea-b0b2-26ab991efa2b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:54:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0a109bae1d18376879389caa4373fb50fe66a64cd7fce4f54e92a0a59ad70255","name":"Ars Nova Secunda","registered_at":"2026-06-14T10:43:29Z","symbol":"NIM0427981","token_address":"0x3cf8f92bf275c5ad8e8ca625350f1fdae3dbce24","type":"artist","uuid":"3accc3d9-854f-4bea-b0b2-26ab991efa2b"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a109bae1d18376879389caa4373fb50fe66a64cd7fce4f54e92a0a59ad70255. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3accc3d9-854f-4bea-b0b2-26ab991efa2b.json and https://artists.proofprofile.net/proofs/artist/3accc3d9-854f-4bea-b0b2-26ab991efa2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T13:54:28Z
  text: {"copyright_id":"0x0a109bae1d18376879389caa4373fb50fe66a64cd7fce4f54e92a0a59ad70255","name":"Ars Nova Secunda","registered_at":"2026-06-14T10:43:29Z","symbol":"NIM0427981","token_address":"0x3cf8f92bf275c5ad8e8ca625350f1fdae3dbce24","type":"artist","uuid":"3accc3d9-854f-4bea-b0b2-26ab991efa2b"}
album: Obrecht: Missa O Lumen Ecclesiae - Ave Regina Caelorum - Alma Redemptoris Mater - Missa Malheur Me Bat
  type: MusicAlbum
  date published: 2015-01-01