Anna Handler
type: MusicGroup
description: Anna Isabella Handler (born 16 April 1996) is a German conductor and concert pianist. Handler is currently assistant conductor of the Boston Symphony Orchestra and chief conductor-designate of the Ul
popularity: 21
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x64c07be87a230b9bbc002b359f243571c3c6ad06285f879a74684e99ae8c9808
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/6598af6a-866f-48f8-ada1-19feb1627ba8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6598af6a-866f-48f8-ada1-19feb1627ba8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6598af6a-866f-48f8-ada1-19feb1627ba8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x64c07be87a230b9bbc002b359f243571c3c6ad06285f879a74684e99ae8c9808","name":"Anna Handler","registered_at":"2026-06-11T23:04:48Z","symbol":"NIM0130837","token_address":"0xaa7b1a2414b4b805d2a2f8aaae665639a5b2fae3","type":"artist","uuid":"6598af6a-866f-48f8-ada1-19feb1627ba8"}
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 0x64c07be87a230b9bbc002b359f243571c3c6ad06285f879a74684e99ae8c9808. 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/6598af6a-866f-48f8-ada1-19feb1627ba8.json and https://artists.proofprofile.net/proofs/artist/6598af6a-866f-48f8-ada1-19feb1627ba8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x64c07be87a230b9bbc002b359f243571c3c6ad06285f879a74684e99ae8c9808","name":"Anna Handler","registered_at":"2026-06-11T23:04:48Z","symbol":"NIM0130837","token_address":"0xaa7b1a2414b4b805d2a2f8aaae665639a5b2fae3","type":"artist","uuid":"6598af6a-866f-48f8-ada1-19feb1627ba8"}