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World Network, originally Worldcoin, is a for-profit cryptocurrency project that uses iris biometrics developed by San Francisco- and Berlin-based Tools for Humanity. Founded in 2019 by OpenAI chief executive Sam Altman , Max Novendstern, and Alex Blania, it has accumulated $250 million in funding from venture capital firms Andreessen Horowitz ...
2020 Standard Catalog of World Coins: 2001–Date, 14th Edition, publication date 2019, Krause Publications, ISBN 978-1-4402-4897-9; All with digital copy available separately. Other related catalogs. Collecting World Coins: Standard Catalog of Circulating Coinage: 1901–present, 15th Edition, publication date 2015, Krause Publications, ISBN ...
List of most expensive coins Price Year Type Grade Issuing country Provenance Firm Date of sale $18,900,000 1933 1933 double eagle: MS-65 CAC United States: King Farouk of Egypt: Sotheby's [1] June 8, 2021 $12,000,000 1794 Flowing Hair dollar: SP-66 CAC United States Neil, Carter Private sale [2] January 24, 2013 $9,360,000 1787 Brasher ...
A 2018 private sale of another doubloon with the signature EB on the bird’s wing went for more than $5 million, according to Coin World. Another Brasher doubloon sold for a record $9.36 million ...
Worldcoin, according to its website, is a “free, privacy-preserving, open protocol intended to be the world’s largest identity and financial public network.”
In the coin collecting community the company is best known for its Standard Catalog of World Coins, a series of coin catalogs commonly referred to as Krause-Mishler catalogs or simply Krause catalogs; they provide information, pricing, and Krause-Mishler (KM) numbers [2] referring to coin rarity and value.
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