Credits

Image credits

The coins in the money timeline are real photographs from Wikimedia Commons. Each was cut out of its background, re-centred, resized and tone-matched. The source licenses apply to the derived images; derivatives of CC BY-SA sources are shared under the same license.

  1. Shell money

    Architectonica perspectiva 01.JPG

    Author
    H. Zell
  2. Electrum trite, Lydia

    Electrum trite, Alyattes, Lydia, 620-563 BC.jpg

    Author
    Unknown / Photography by CNG coins
  3. Silver tetradrachm, Athens

    Athens - 500-482 BC - silver tetradrachm - head of Athena - owl - Tübingen MUT.jpg

    Author
    ArchaiOptix
  4. Punch-marked karshapana, Magadha

    I12 1karshapana Maghada 1ar (8482307176).jpg

    Author
    Jean-Michel Moullec from Vern sur Seiche (35, Bretagne), France
    License
    CC BY 2.0
  5. Denarius of Augustus, Rome

    Roman coin, Denarius of Augustus (obverse) (FindID 711401).jpg

    Author
    Oxfordshire County Council, Anni Byard, 2015-03-17 14:37:49
    License
    CC BY 2.0
  6. Gold solidus, Byzantium

    Clevelandart 1968.55.a.jpg

    Author
    not credited on the source page
    License
    CC0
  7. Kaiyuan Tongbao, Tang China

    S589 kaiyuan typeIA H141m 1ar85 (9124907472).jpg

    Author
    Jean-Michel Moullec from Vern sur Seiche (35, Bretagne), France
    License
    CC BY 2.0
  8. Gold dinar of al-Walid, Umayyad Caliphate

    Gold dinar of al-Walid reverse, 707-708 CE.jpg

    Author
    Not credited
    License
    CC0
  9. Gold ducat of Vladislaus II, Hungary

    Hungary Vladislaus II ducat gold coin 1491, mintmaster Bartolomeu Drágfi de Beltiug.png

    Author
    Mint-master: Bartolomeu Drágfi de Beltiug (Bertalan Drágffy de Béltek)
    License
    Public domain
  10. Mohur of Shah Jahan, Mughal Empire

    Mohur of Shah Jahan (r. 1628-1658) LACMA M.77.55.12 (2 of 2).jpg

    Author
    not credited on the source page
    License
    Public domain
  11. Eight reales cob, Mexico City mint

    17th Century Spanish Treasure Silver 8 Reales Cob Coin.jpg

    Author
    Coin: Casa de Moneda de la Ciudad de México.Composite image: Centpacrr
  12. Penny, Britain, 1860

    1860 penny obverse.jpeg

    Author
    Heritage Auctions for the photo, Leonard Charles Wyon designed the coin
    License
    Public domain
  13. Morgan dollar (2021 commemorative strike)

    2021 Morgan Commemorative Dollar Obverse.png

    Author
    www.usmint.gov
    License
    Public domain
  14. Two euro coin

    2 Euro common face (Old Design) (5133941308).jpg

    Author
    Mark Morgan from Trinidad
    License
    CC BY 2.0
  15. Casascius physical bitcoin, 2011

    Physical Bitcoin 2011 Casascius 1 Bitcoin Coin Token.png

    Author
    Tiberiandusk

Everything else

The Polypus octopus mark, the 3D coin, the diagrams and all interface illustrations are original work. Typeface: Inter Tight by Rasmus Andersson and contributors, SIL Open Font License 1.1. 3D rendering: three.js (MIT).