Topos
type: MusicGroup
genre: entehno
genre: laïko
description: In mathematics, a topos (, ; plural topoi or , or toposes) is a category that behaves like the category of sheaves of sets on a topological space (or more generally, on a site). Topoi behave much lik
popularity: 7
followers: 312
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaaca300216157c95771b8b63d13f63a211d9a40b22eca4a12aeb18f3fd3be157
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a023139e-7d56-4859-b3a2-c6b7a04a7424.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a023139e-7d56-4859-b3a2-c6b7a04a7424.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a023139e-7d56-4859-b3a2-c6b7a04a7424
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
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 0xaaca300216157c95771b8b63d13f63a211d9a40b22eca4a12aeb18f3fd3be157. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a023139e-7d56-4859-b3a2-c6b7a04a7424.json and https://artists.proofprofile.net/proofs/artist/a023139e-7d56-4859-b3a2-c6b7a04a7424.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
album: Tou Topou
  type: MusicAlbum
  date published: 2021-06-11
album: Tis Thalassas
  type: MusicAlbum
  date published: 2021-07-19
album: Ksenitemeno Mou Pouli
  type: MusicAlbum
  date published: 2021-11-03
album: Triantafyllia (Tis Makedonias)
  type: MusicAlbum
  date published: 2021-12-28
album: Apagogi
  type: MusicAlbum
  date published: 2022-01-14
album: Apo Kseno Topo (Tis Mikras Asias)
  type: MusicAlbum
  date published: 2022-02-03
album: Tou Iliou
  type: MusicAlbum
  date published: 2022-02-23
album: Tou Anthropou
  type: MusicAlbum
  date published: 2022-04-01
album: Tou Ouranou
  type: MusicAlbum
  date published: 2022-05-30
album: Tis Kritis (Oso Varoun Ta Sidera)
  type: MusicAlbum
  date published: 2023-02-13
album: Ola Se Mia Thalassa
  type: MusicAlbum
  date published: 2023-02-28
album: Koita
  type: MusicAlbum
  date published: 2024-04-01
album: Petao Psila
  type: MusicAlbum
  date published: 2024-04-01