Ethereum-Compatible Layer 1 #Blockchain Operated by Japanese Companies. Trial of Bank-issued #Stablecoins. See more: https://xitter.cf/t.co/qEDky2Joiy
Tokyo, Japan
Joined December 2022
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【Stablecoin Proof-of-Concept Partners Launched 🚀】
Japan Open Chain has launched the “Stablecoin Proof-of-Concept Partners” program to explore and test stablecoin use cases together with businesses, financial institutions, and local governments, with the goal of advancing real-world adoption.
26 organizations have already joined the program, exploring a wide range of real-world use cases including domestic and cross-border payments, B2B transactions, digital asset settlement, and web3 services.
Together with our partners, we will work toward turning proof-of-concept initiatives into real-world implementation using stablecoins such as EJPY.
Learn more👇
jbfd.org/en/news/stablecoin-…
【DEC preparing for listing on Zaif】
It has been announced that a new coin, DEC (Data Economy Coin), is preparing for issuance on Japan Open Chain and potential listing on Zaif, with an MOU signed between the parties. 🎉
DEC is a project aiming to build a new “Data Economy” by creating new value from data.
We are pleased that Japan Open Chain can contribute as the infrastructure supporting the realization of this vision.
Learn more 👇
dec.co.jp/news/zaif-listing-…
【Tokyo Hard Fork Update 🚀】
Japan Open Chain has completed its migration to the Tokyo Hard Fork testnet and has begun operating under the new PoSA environment.
We will now monitor network stability and validator operations on the testnet, with the Mainnet migration, “The Merge,” targeted for early November.
Learn more 👇
jbfd.org/en/news/joc-tokyo-h…
#JapanOpenChain #JOC
【Tokyo Hard Fork: Testnet Migration 🚀】
Japan Open Chain will implement the testnet migration for the "Tokyo Hard Fork" on September 7, 2026.
This upgrade will transition the network's consensus mechanism from PoA to PoSA.
By adopting a mechanism closely aligned with Ethereum's PoS, JOC will significantly improve compatibility with Ethereum while moving validator management on-chain to enhance the transparency and verifiability of network governance.
Following validation on the testnet, Phase 1 "The Merge" is scheduled to be implemented on the mainnet in November.
Learn more 👇
jbfd.org/news/joc-tokyo-hard…
#JapanOpenChain #JOC #Ethereum #Blockchain
🌙 Lunascape powered by #JOC × TaskOn Quest is LIVE!
Download Lunascape Mobile & Set up your Wallet to get exclusive NFT + win $10 USDT!
🤑 Join the JapanOpenChain @Lunascape TaskOn now!
⏰ Duration: Live now until May.31
🎁Rewards: 2K+USDT Don’t miss this chance!
👉Join here: taskon.xyz/quest/53346704
🇯🇵 The Japanese yen-backed stablecoin "#EJPY" is officially coming.
Japan Blockchain Foundation has formally decided to issue EJPY under a trust-type scheme — a major step toward evolving #JapanOpenChain into a real payment infrastructure.
✅ B2B payments
✅ Digital asset settlements
✅ Cross-border payments
Building a seamless financial system powered by a trusted, Japan law-compliant stablecoin!
👉jbfd.org/en/news/joc-ejpy
#Stablecoin #Web3 #JOC
It's happening tomorrow!
🗣️Next-Gen. Finance Conference “MoneyX 2026”
🗓️Feb 27, 2026 (Fri.) @ The Prince Park Tower Tokyo
👉 Learn more: coinpost.jp/?p=691058
#MoneyX #JOC
📢Japan Blockchain Foundation Co., Ltd. has been confirmed as a Gold Sponsor of the Next-Generation Finance Conference “MoneyX 2026”!
Japan Open Chain is an Ethereum-compatible Layer 1 blockchain designed to serve as a next-generation financial infrastructure accessible to users worldwide. It operates as a consortium-based public chain managed by trusted Japanese companies, offering high throughput, sufficient decentralization, and strong security and stability.
By providing a highly transparent digital infrastructure, it supports the development of Web3 services that contribute to solving societal challenges, such as improving administrative efficiency and revitalizing local economies.
【Message from Japan Blockchain Foundation Co., Ltd. to Attendees】
The next-generation financial infrastructure, Japan Open Chain, aims to enable the real-world adoption of digital assets by leveraging its high security and stability. We welcome inquiries from those interested in co-creating the next generation of financial markets.
👉 Learn more: coinpost.jp/?p=691058
📍 February 27, 2026 (Friday) The Prince Park Tower Tokyo
Next-Generation Finance Conference “MoneyX 2026”
#MoneyX #JapanBlockchainFoundation
▶︎ Event details & free registration :
x.gd/xiyWe
【BREAKING】#JOC is now listed on Zaif! 🚀
$JOC trading is officially live on @zaifdotjp now! ✨ Stay tuned as we continue to expand the JOC ecosystem 💪
Details here ▼
japanopenchain.org/zaif-list…
【速報】#JOC コインがZaifに上場しました！🚀
本日より、暗号資産取引所 @zaifdotjp にて$JOCの取り扱いが開始されました!✨
今後ともJOCエコシステムの拡大にご期待ください💪
詳細はこちら▼
japanopenchain.org/zaif-list…
#JOC #Zaif #ブロックチェーン #暗号資産
Japan Open Chain retweeted
🤑 Join the JapanOpenChain @JapanOpenChain TaskOn now!
⏰ Duration: Live now until Feb.18
🎁Rewards:2K+USDT Don’t miss this chance!
👉Join here: taskon.xyz/quest/525612746
✨#JapanOpenChain native token $JOC is listing on @zaifdotjp ✨
🗓️Date: Thursday, Feb. 12
🕒Time: (around) 3PM JST
For more details👇
jbfd.org/en/news/zaif
#JOC is LIVE on @AlchemyPay On-ramp! 🤝
An instant seamless onboarding experience to join #JOC ecosystem with Visa, Mastercard, Apple Pay, Google Pay etc. 🚀
With this integration, we aim to expand JOC ecosystem as well as boost global liquidity🔥
Details👉
gu-group.com/news/joc-coin-a…
[Issue Resolved]
The display issue affecting our crypto lending service and NFT service, which was caused by an external indexer, has now been resolved, and the services are currently operating normally.
Please note that no data loss occurred as a result of this issue.
We sincerely apologize for any inconvenience caused.
[Service Disruption Notice]
We are currently experiencing an outage on the external indexer used by our service.
As a result, some data—such as listings and NFTs—may not be displayed correctly on our crypto lending service and NFT service.
Please rest assured that no data has been lost.
The indexer provider is currently working on recovery efforts.
We sincerely apologize for any inconvenience this may cause.
We will provide an update as soon as the issue is resolved.
Another huge step for users to participate in our ecosystem seamlessly & for us to make a presence in global markets👏
🇯🇵 Bridging real-world payments to Japan's trusted Web3 ecosystem.
#AlchemyPay's fiat-crypto On-Ramp now supports $JOC from @japanopenchain0, the Ethereum-compatible L1 built under Japanese law by leading enterprises.
Buy & sell crypto easily with global & local fiat payments👉 ramp.alchemypay.org
$ACH
🎉 #JapanOpenChain Connect #2 is happening on Nov 27🎉
Japan Open Chain Connect#2 Details
🗣️: Stablecoin hands-on workshop using a next-generation ｗeb3 browser
📆: Thursday, Nov. 27 19:00-21:00
📍: Pacific Hub
Sponsor: @DCENTWALLETS
Register here👇
hubs.li/Q03VMrds0
our global partner🦾
SubQuery Customer Spotlight: Network Builders 🦾
@AstarNetwork – multi-VM chain (EVM + WASM); relies on fast, stable SubQuery indexing to keep everything in sync.
@MoonbeamNetwork – uses SubQuery to track block production for Orbiter pool; shared indexers allow community operators to verify block performance & rewards.
@zen_chain – native staking protocol; SubQuery was the first and only tool they needed for consensus-critical indexing.
@burnt_xion – uses SubQuery for mainnet & testnet indexing; able to handle massive traffic without degradation.
@satlayer – the economic layer for Bitcoin, turning BTC into a fully liquid, productive, and programmable asset; uses SubQuery to index Cube data, track deposits, and distribute Sats² points with precision.
@Japanopenchain0 – SubQuery powers network-level monitoring for Japanese ecosystem nodes.
@xcavateofficial – index data using SubQuery to display property listings on the realXmarket app, built on Xcavate blockchain.
@dymension – monitors hub & RollApps (IBC transfers, swaps, burns); moved from Firebase cron jobs to SubQuery for faster, stable indexing.
From block production to staking to appchains, these networks rely on robust indexing to operate smoothly.
