Sara Calvetti
type: MusicGroup
genre: bossa nova
popularity: 2
followers: 87
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x148e51c276864b75c3a075eb1cb2682cc281fed42467907df6a2278fe710e149
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954593
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954593
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/be5b5c35-8691-4ea1-9e94-aa5186ab9119.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/be5b5c35-8691-4ea1-9e94-aa5186ab9119.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/be5b5c35-8691-4ea1-9e94-aa5186ab9119
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:46:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x148e51c276864b75c3a075eb1cb2682cc281fed42467907df6a2278fe710e149","name":"Sara Calvetti","registered_at":"2026-06-20T18:11:51Z","symbol":"NIM1675304","token_address":"0x77f1429e72f830508a9556e9d14d0135dd6dd06b","type":"artist","uuid":"be5b5c35-8691-4ea1-9e94-aa5186ab9119"}
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 0x148e51c276864b75c3a075eb1cb2682cc281fed42467907df6a2278fe710e149. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be5b5c35-8691-4ea1-9e94-aa5186ab9119.json and https://artists.proofprofile.net/proofs/artist/be5b5c35-8691-4ea1-9e94-aa5186ab9119.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:46:01Z
  text: {"copyright_id":"0x148e51c276864b75c3a075eb1cb2682cc281fed42467907df6a2278fe710e149","name":"Sara Calvetti","registered_at":"2026-06-20T18:11:51Z","symbol":"NIM1675304","token_address":"0x77f1429e72f830508a9556e9d14d0135dd6dd06b","type":"artist","uuid":"be5b5c35-8691-4ea1-9e94-aa5186ab9119"}
album: I'd Like (with Marco Liuni & A.M.)
  type: MusicAlbum
  date published: 2002
album: Beautiful Love
  type: MusicAlbum
  date published: 2003
album: Desert Dub
  type: MusicAlbum
  date published: 2005
album: Sospesa
  type: MusicAlbum
  date published: 2005-05-22
album: Senza stile / Ogni mio desiderio
  type: MusicAlbum
  date published: 2006
album: So in Love
  type: MusicAlbum
  date published: 2019-12-04
album: Turn Your Back
  type: MusicAlbum
  date published: 2020-04-12
album: Casual Acoustic
  type: MusicAlbum
  date published: 2023-03-01
album: Turn Your Back (Acoustic Version)
  type: MusicAlbum
  date published: 2023-11-09