Aleksandra Maciejczuk
type: MusicGroup
popularity: 5
followers: 77
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x564cc36ea9068974dd6499eff5b419e9d27cd14456f75fa13758be1b06fe11b8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/baf63f02-fb2e-47f2-8187-77a818155853.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/baf63f02-fb2e-47f2-8187-77a818155853.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/baf63f02-fb2e-47f2-8187-77a818155853
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x564cc36ea9068974dd6499eff5b419e9d27cd14456f75fa13758be1b06fe11b8","name":"Aleksandra Maciejczuk","registered_at":"2026-06-20T16:59:36Z","symbol":"NIM1660721","token_address":"0x472c67790fca5463022424088d5ae58bbe3edf97","type":"artist","uuid":"baf63f02-fb2e-47f2-8187-77a818155853"}
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 0x564cc36ea9068974dd6499eff5b419e9d27cd14456f75fa13758be1b06fe11b8. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/baf63f02-fb2e-47f2-8187-77a818155853.json and https://artists.proofprofile.net/proofs/artist/baf63f02-fb2e-47f2-8187-77a818155853.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0x564cc36ea9068974dd6499eff5b419e9d27cd14456f75fa13758be1b06fe11b8","name":"Aleksandra Maciejczuk","registered_at":"2026-06-20T16:59:36Z","symbol":"NIM1660721","token_address":"0x472c67790fca5463022424088d5ae58bbe3edf97","type":"artist","uuid":"baf63f02-fb2e-47f2-8187-77a818155853"}
album: La Loba
  type: MusicAlbum
  date published: 2024-02-02
album: La Loba
  type: MusicAlbum
  date published: 2024-02-02
album: this is how seals sing when no one hears
  type: MusicAlbum
  date published: 2024-03-28
album: this is how seals sing when no one hears
  type: MusicAlbum
  date published: 2024-03-28
album: the water in you longs for the ocean
  type: MusicAlbum
  date published: 2024-11-20
album: niebo jest tutaj
  type: MusicAlbum
  date published: 2025-02-14
album: echoes of the forgotten sky
  type: MusicAlbum
  date published: 2025-06-09