Tanja Köhler
type: MusicGroup
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d6bb6a83e34198ff95fdae75f63da7e7804e318bd4dc42d10fd54646e8a135a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e5bb8711-5992-4ee7-9c78-c7f088094db2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e5bb8711-5992-4ee7-9c78-c7f088094db2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e5bb8711-5992-4ee7-9c78-c7f088094db2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d6bb6a83e34198ff95fdae75f63da7e7804e318bd4dc42d10fd54646e8a135a","name":"Tanja Köhler","registered_at":"2026-06-21T08:23:39Z","symbol":"NIM1874290","token_address":"0xf3bdb385842454c98fd4f8d3667fda5a39df06b3","type":"artist","uuid":"e5bb8711-5992-4ee7-9c78-c7f088094db2"}
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 0x9d6bb6a83e34198ff95fdae75f63da7e7804e318bd4dc42d10fd54646e8a135a. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5bb8711-5992-4ee7-9c78-c7f088094db2.json and https://artists.proofprofile.net/proofs/artist/e5bb8711-5992-4ee7-9c78-c7f088094db2.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x9d6bb6a83e34198ff95fdae75f63da7e7804e318bd4dc42d10fd54646e8a135a","name":"Tanja Köhler","registered_at":"2026-06-21T08:23:39Z","symbol":"NIM1874290","token_address":"0xf3bdb385842454c98fd4f8d3667fda5a39df06b3","type":"artist","uuid":"e5bb8711-5992-4ee7-9c78-c7f088094db2"}
album: Ein Ohrensessel, zwölf Fragen und eine Reise zu dir selbst (Eine Erzählung über die Kraft der Veränderung)
  type: MusicAlbum
  date published: 2025-04-22