Mastodawn

Experienced a real-world web3 use case at a cozy cafe "COFFEE BEANS WORK" in Osaka, Japan! ☕️✨

I paid for my coffee using JPYC (a yen-pegged stablecoin). The moment the transaction went through, a "Proof-of-Visit" SBT (Non-Transferable NFT) was instantly minted to my HashPort Wallet via the Polygon network.

The digital record of the coffee I enjoyed is now secured on the blockchain.

#web3 #blockchain #stablecoin #JPYC #NFT #SBT #Polygon #crypto #HashPortWallet #Osaka #Decentralized

Koji Apr 29

歴代のオリンピックマラソンメダリスト、ボストンマラソン優勝、凄い方々とハイタッチできました。
#ぎふ清流ハーフマラソン
#川内優輝
#有森裕子
#野口みずき
#高橋尚子

Koji Apr 12

Antigravity reached its weekly limit, so I could no longer use the higher-end model. Therefore, I stepped away from my PC and experienced Antigravity firsthand.
#Antigravity

Koji Apr 4

石垣島マラソンハーフ

Koji Mar 19

I recently ran the Nagoya City Marathon. I decided to record my running time in SBT, so I had an app created using Claude Code to mint it.
I'm practically a complete beginner with Solidity. It took about half a day to create, but Claude Code is amazing!
#web3

https://opensea.io/item/polygon/0x6f8d8150b752a04ce07e03719f46c9576adf0f6e/0

名古屋シティーマラソン - ハーフマラソン - RunRecordSBT | OpenSea