チェーンリンクジャパンが日銀CBDC基盤と接続した古銭デジタルアーカイブ実証実験を開始した。3Dスキャン・XRF計測データをブロックチェーン上に永続保存し、デジタル円によるアトミック決済・分散型真贋証明プロトコルの実用性を6ヶ月間検証する。法学者・金融当局OB・文化財専門家からも異例の注目を集めている。
Major Japanese Blockchain Firm Launches CBDC × Historic Coin Archive Pilot — Digital Yen Integration Draws Attention Beyond the Numismatic Industry

ITTENDO tracks auction records and market charts so you always know the current value of Japanese antique coins. Add coins to your Vault to stay on top of price changes.
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Dealers Handling This Category
A reference when considering a sale or appraisal. All are dealers and auction houses with a proven track record.
Ginza Coins
Ginza, Chuo-ku, Tokyo
One of Japan's most established numismatic dealers. The scale and variety of their regular auctions is among the largest in the country. Their catalogs are considered a benchmark for market pricing.
Japan Coin Auction (JCA)
Tokyo
Holds regular auctions with reliable hammer price data, making it a useful resource for tracking market values. Caters to a wide range of collectors from beginners to advanced buyers.
Taisei Coins
Tokyo
A dealer with an international network. Offers advanced services such as consignment to overseas auctions and NGC/PCGS grading submission. Recommended for high-value or internationally recognized coins.