We are pleased to announce the release of IOST v4.10.0, a mandatory mainnet upgrade introducing improvements to smart contract execution, error handling, and overall node stability.

This release includes backward-incompatible changes to the network rules. All mainnet node operators must complete the upgrade before the new rules take effect to maintain network compatibility and avoid potential service disruptions.

Key Improvements

IOST v4.10.0 introduces several technical improvements designed to enhance network reliability and stability:

• Smart Contract Execution: Improved error handling for contract calls, stronger isolation within the Virtual Machine (VM), and enhanced validation of storage parameters.
• Node Stability: Strengthened error handling for insufficient Gas budgets, contract deployment, and contract upgrades to improve node reliability.
• Development Infrastructure: Upgraded the Go toolchain to version 1.27.3, alongside updates to VM libraries, build processes, and container image configurations.

Important: Mandatory Upgrade for All Node Operators

The new execution rules will take effect at mainnet block height 480080000, currently estimated to occur on November 10, 2026, at approximately 23:45 UTC.

Please note that the estimated activation time may vary depending on block production speed. The activation is determined by block height, not by the estimated date or time.

All mainnet node operators, including block producers, exchanges, custodians, and other full-node operators, must upgrade to v4.10.0 before the activation block.

Failure to upgrade in time may affect block production, block synchronization, and transaction confirmation.

Upgrade Resources

Docker Image:

iostio/iost-node:4.10.0

Release Notes:

Release v4.10.0 · iost-official/go-iost

Node Upgrade Guide:

Join IOST Network | IOST Docs

Verify Your Upgrade

After completing the upgrade, run the following command to verify the node version and Git commit hash:

docker exec -it iserver iwallet state | grep -E "codeVersion|gitHash"

The output should include the following values:

"gitHash": "31ed03d20ebe506a0f27fb5880bbedc4dcd2a835",
"codeVersion": "4.10.0"

Important: When upgrading manually or rebuilding containers, ensure that existing configurations and data volumes are preserved. Continue using the following startup parameter:

--security-opt seccomp:unconfined

Thank You for Your Continued Support

We would like to thank our global community, node operators, exchanges, and ecosystem partners for their continued cooperation and support.

Your efforts are essential to maintaining a secure, stable, and reliable IOST network as we continue improving our infrastructure.

About IOST

IOST is a blockchain platform focused on building scalable and accessible infrastructure for Real-World Assets (RWA) and Web3 applications. With a strong emphasis on security, efficiency, and real-world adoption, IOST aims to bridge traditional finance and blockchain technology, enabling new opportunities for businesses, developers, and users worldwide.

Since its launch in 2018, IOST has continued to expand its global ecosystem through technological innovation, strategic partnerships, and community-driven initiatives.

Stay Connected with IOST

IOST | Link3

IOST v4.10.0 Mainnet Upgrade Announcement was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.

We are pleased to announce that IOST v4.0.0 has been officially released, and all mainnet consensus nodes have successfully completed the upgrade. The network is operating smoothly following the update.

This release introduces improvements to transaction processing consistency, smart contract execution stability, and overall node reliability, alongside important updates to the mainnet’s network rules.

Important: Mandatory Upgrade for Node Operators

IOST v4.0.0 is a mandatory upgrade that introduces backward-incompatible changes to the network rules.

All exchanges, custodians, and other mainnet node operators that have not yet upgraded must update to v4.0.0 immediately to maintain network compatibility, ensure proper block synchronization, and avoid potential service disruptions.

Ecosystem partners relying on third-party node providers should also verify that their providers have completed the upgrade and that their nodes are synchronizing correctly.

Resources

• Release Notes:

Release v4.0.0 · iost-official/go-iost

• Node Upgrade Guide:

Join IOST Network | IOST Docs

After upgrading, use the following command to check the commit hash and version:

docker exec -it iserver iwallet state | grep -E "codeVersion|gitHash"

Expected output:

"gitHash": "9abebfdb8b7f9b7e0fff128caa0888485d891bbd",
"codeVersion": "4.0.0",

• Note: If the node panics after a manual upgrade or container recreation, check that `security-opt` is set to `seccomp:unconfined`.

We would like to thank our global community, node operators, and ecosystem partners for their continued cooperation and support in maintaining a secure, stable, and reliable IOST network.

About IOST

IOST is a blockchain platform focused on building scalable and accessible infrastructure for Real-World Assets (RWA) and Web3 applications. With a strong emphasis on security, efficiency, and real-world adoption, IOST aims to bridge traditional finance and blockchain technology, enabling new opportunities for businesses, developers, and users worldwide.

Since its launch in 2018, IOST has continued to expand its global ecosystem through technological innovation, strategic partnerships, and community-driven initiatives.

Stay Connected with IOST

IOST | Link3

📢 IOST v4.0.0 Mainnet Upgrade Announcement was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.

The IOST Foundation has completed the burn of 70 million IOST tokens, permanently removing them from the total token supply.

The tokens originated from IOST’s legacy ERC-20 issuance and were designated for retirement as part of the network’s long-term token management process. With the burn now completed, the 70,000,000 IOST have been permanently removed from circulation.

The transaction represents another step in maintaining a clear and sustainable supply structure as IOST continues to develop its network and ecosystem.

A Continued Focus on Sustainable Growth

Responsible token management remains one part of IOST’s broader approach to long-term ecosystem development.

Alongside this burn, work continues across the IOST ecosystem on strengthening core network infrastructure, improving security and reliability, expanding developer tooling, and making IOST easier to build on and interact with.

Recent development efforts have included improvements to account security, SDK and documentation integration, network and node performance, smart contract security reviews, and continued development of new on-chain tools.

Together, these efforts are focused on building a stronger technical foundation for IOST and supporting sustainable participation across the network.

Moving IOST Forward

As IOST enters its next phase of development, the Foundation will continue working across infrastructure, developer experience, ecosystem products, and network security while maintaining a responsible approach to the token economy.

IOST holders can also participate directly in the network through staking, contributing to network security while earning staking rewards.

More development and ecosystem updates will be shared through IOST’s official channels.

The IOST Foundation Completes 70 Million Token Burn was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.

This summer, IOST returned to Tokyo for WebX 2026, joining partners, institutions, and leading Web3 projects for two days of conversations around the next stage of blockchain adoption in Japan.

With an eight-year presence in the Japanese market, IOST used the occasion to reinforce its commitment to the region while exploring new opportunities across enterprise and institutional adoption.

Day 1: Blockchain NEXUS #2 by NTT DOCOMO GLOBAL

On the first day of WebX 2026, IOST sponsored Blockchain NEXUS #2, hosted by NTT DOCOMO GLOBAL, a company actively exploring and supporting enterprise blockchain adoption.

IOST Co-CEO Blake took the stage to discuss the importance of Japan within the broader Asian market and IOST’s path toward greater enterprise-level adoption.

The event brought together active Web3 projects and established companies in Japan, including representatives from the financial sector. This created an opportunity for both sides to exchange perspectives and discuss how blockchain technology can move beyond experimentation toward practical, real-world applications.

Day 2: Institutional Night by OKJ

On the second day, IOST sponsored Institutional Night, an official WebX side event hosted by OKJ.

During the event, Blake reflected on IOST’s long history in Japan. After eight years of active involvement in the market — and six years since Japanese exchanges including OKJ began listing IOST — the project has built deep connections and experience that provide a strong foundation for its next stage of growth in the country.

Held 180 meters above Tokyo with Tokyo Tower as the backdrop, Institutional Night brought together financial institutions, licensed crypto asset exchanges, financial securities firms, staking infrastructure providers, and other industry participants.

The setting reflected a broader shift taking place in Japan. As the country continues discussions around bringing crypto assets under the Financial Instruments and Exchange Act, conversations between the crypto industry and traditional financial institutions are becoming increasingly important.

Events such as Institutional Night provide a valuable environment for these two worlds to meet and explore the growing role of digital assets within Japan’s investment and financial infrastructure.

Continuing Our Journey in Japan

From enterprise adoption on Day 1 to institutional finance on Day 2, our time at WebX 2026 reflected the opportunities emerging across Japan’s evolving blockchain landscape.

For IOST, Japan is not a new market. It has been an important part of our journey since the early days of the project. As the country’s approach to blockchain and digital assets continues to mature, we look forward to building on those long-standing relationships and exploring the next chapter together.

A Message from Blake to the IOST Japan Community

To close out our WebX 2026 activities, Blake shared a special message with the Japanese community, reflecting on IOST’s journey in Japan and what lies ahead.

About IOST

IOST is a multi-chain ecosystem focused on RWA infrastructure. With a commitment to innovation, security, and community engagement, IOST continues to develop solutions that bridge the gap between traditional finance and decentralized technologies.

For more information about IOST and its initiatives, visit iost.io or join our community channels!

IOST | Link3

IOST Summer 2026: WebX and Institutional Events in Japan was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.

On May 28, IOST and Japanese crypto exchange BitTrade co-hosted a community event at Crypto Lounge GOX, with CoinNinja joining as the media partner. Marking the first collaboration between IOST and BitTrade, IOST CEO Blake traveled from South Korea to attend the event in person.

The event opened with welcoming remarks from Mr. Ishida of Cabinet, a familiar face in Japan’s crypto event scene. This was followed by a presentation from an IOST community member working in Web3 at a major Japanese corporation, who shared insights into the latest developments at the intersection of traditional finance and digital assets.

The main talk session featured BitTrade Marketing Manager Ms. Hori and IOST CEO Blake, who reflected on the journey that led to IOST’s listing on BitTrade. The story dates back to 2020, when BitTrade held a community voting campaign for new token listings. Thanks to strong support from Japan’s crypto community, IOST secured the top spot and ultimately earned its listing.

Interestingly, both organizations share a similar timeline. IOST launched its mainnet in 2019, the same year BitTrade began operations in Japan. Looking back on the past several years, the speakers discussed how the industry has evolved and shared their perspectives on the dramatic changes that have shaped the market between 2019 and 2026.

To commemorate the occasion, BitTrade also announced a limited-time promotional campaign for its IOST lending service.

Following the talk session, attendees participated in a lively Kahoot! quiz competition featuring questions about both IOST and BitTrade. The top three participants received exclusive merchandise from the two organizations as prizes.

The event concluded with a networking session, where attendees had the opportunity to connect directly with exchange operators, blockchain builders, and ecosystem contributors. For many participants, it was a rare chance to engage with industry professionals in a more personal setting. Blake was especially pleased to meet community members who have supported IOST since its early days following the mainnet launch in 2019.

We are incredibly grateful to BitTrade for partnering with us on this event and to everyone who joined us in Tokyo. Community support has been a driving force behind IOST’s journey in Japan, and we remain committed to contributing to the growth of the country’s digital asset ecosystem.

We look forward to creating more opportunities for the community to connect, learn, and grow together in the years ahead.

About IOST

IOST is a multi-chain ecosystem focused on RWA infrastructure. With a commitment to innovation, security, and community engagement, IOST continues to develop solutions that bridge the gap between traditional finance and decentralized technologies.

For more information about IOST and its initiatives, visit iost.io or join our community channels!

IOST | Link3

Inside IOST and BitTrade’s Community Gathering in Tokyo was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.

On January 28, 2026, IOST hosted a New Year gathering in Tokyo for its Japanese community, co-hosted with the Japanese crypto exchange OKJ and Layer 1 blockchain project SEI. Community members, media representatives, industry professionals, and ecosystem partners came together to reflect on the year ahead, share goals for 2026, and enjoy an interactive quiz session — creating a lively and engaging atmosphere throughout the event.

CEO Blake Took the Stage

IOST CEO Blake opened the event by thanking everyone for attending and reflecting on the progress made in 2025. He highlighted IOST’s rebranding last year and expressed appreciation for the strong support received from participants across the ecosystem.

Blake then outlined three key priorities for 2026:

1. Continued feature expansion for the DID Ring Signet, released last year
2. The launch of new RWA-focused products
3. Community expansion into new regions

These initiatives were presented as IOST’s core strategic focus for the year ahead.

Insights from OKJ and SEI

OKJ shared its perspective as a crypto exchange, discussing the impact of cryptocurrencies transitioning under Japan’s Financial Instruments and Exchange Act this year, and how regulatory developments are shaping the local market.

SEI reflected on 2025 as a year of strong growth and addressed questions from the community, explaining its key strengths and how it differentiates itself from other Layer 1 projects.

Quiz Session and Networking

During the quiz session, participants answered questions related to projects sponsored by IOST and SEI using their smartphones. Winners were rewarded with project tokens, adding excitement and friendly competition to the event.

Attendees also enjoyed drawing Omikuji, a traditional Japanese New Year fortune, where participants randomly selected a fortune slip predicting their luck for the year — ranging from great fortune to less favorable outcomes — adding a uniquely cultural touch to the gathering.

The networking session that followed allowed project teams and community members to connect over food and drinks. Beyond casual conversations, the event also served as a valuable business networking opportunity, with participants discussing new challenges for 2026 and exploring potential partnerships for future initiatives.

Event Souvenirs and Closing

As a souvenir, each attendee received a traditional Japanese dorayaki featuring a friendship character representing IOST and OKJ, along with drip coffee printed with the same character — a thoughtful and memorable takeaway.

This New Year gathering marked a strong kickoff for IOST in 2026, reinforcing ties within the Japanese community and setting the tone for continued growth and collaboration throughout the year.

About IOST

IOST is a multi-chain ecosystem focused on RWA infrastructure. With a commitment to innovation, security, and community engagement, IOST continues to develop solutions that bridge the gap between traditional finance and decentralized technologies.

For more information about IOST and its initiatives, visit iost.io or join our community channels!

IOST | Link3

IOST Kicks Off 2026 with a Community New Year Gathering in Tokyo was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.

Welcome to the Signet app!

Follow the steps below to set up your account, verify your ring NFT, and order your physical signet ring.

Create your account

1. Enter a valid email address.
2. Verify your email through the code sent to your inbox.
3. Create a password that meets the requirements:

• At least 8 characters
• Includes uppercase and lowercase letters
• Includes numbers
• Includes special characters (e.g., !, ?, #)

3. (Optional) Enter a nickname for your account.

Tap Next to continue.

Connect your wallet and verify your NFT

Next, connect the wallet that holds your ring NFT. You can connect via MetaMask or WalletConnect

The app will automatically scan your wallet for NFTs.

If you have more than one eligible NFT, select the ring NFT you want to attach to this wallet account.

Once selected, you’re ready for the next step: choosing your ring size.

Measure your finger and choose your ring size

You can choose between two methods to find the right size:

1. Direct measurement (on-screen): Place your finger on your phone screen and follow the on-screen instructions to measure it in real time.
2. Paper strip method

• Download and print the paper strip.
• Wrap it around your finger.
• Mark where the strip overlaps.
• Measure the length and enter the measurement into the app.

The app will then suggest the corresponding ring size. Confirm your size to continue.

Enter your shipping details

Fill in your shipping address carefully.

• Make sure to select the correct country code for your phone number.
• Provide as much detail as possible so the courier can deliver your package without issues.

Once done, the final step is to pay the shipping fee. You can pay using the supported wallets and payment options

Once your payment is confirmed, your order is complete. You will receive tracking information by email when your ring is ready to ship.

When your ring arrives, don’t forget to share it on social media and tag IOST on X!

About IOST

IOST is a multi-chain ecosystem focused on RWA infrastructure. With a commitment to innovation, security, and community engagement, IOST continues to develop solutions that bridge the gap between traditional finance and decentralized technologies.

For more information about IOST and its initiatives, visit iost.io or join our community channels!

https://link3.to/iost

Signet Ring Setup Guide: How to Claim and Receive Your Ring was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.

We wholeheartedly appreciate your positivity and long-term support. Your valuable insights and suggestions are crucial in shaping our journey as we continue to evolve. Thank you for being an integral part of the IOST experience!

Technical Development

[Development Progress]

• Continued design and development of the new blockchain explorer UI, including frontend component implementation and testing
• Deployment of hotfixes and incremental updates for iWallet Pro
• Compatibility and integration updates between the blockchain explorer and the latest iWallet Pro version
• Further refinement of the IOST 3.0 Layer 2 architecture, including detailed solution design
• Ongoing advancement of the IOST 3.0 L2 solution, with a focus on modularization of core Rollup components
• Performance optimization and bug fixes for iWallet Pro new features, such as one-click account creation
• Smart contract development for RWA asset tokenization modules
• Requirements review and planning for the next phase of iWallet Pro features, including DApp ecosystem aggregation
• Official release of the IOST Signet App
• Compatibility testing between iWallet Pro and DApps
• Compatibility upgrades for IOST Layer 2 nodes
• Development of new mainnet features

[Operations & Maintenance]

• Ongoing maintenance and security verification of L1 and L2 nodes
• Continuous monitoring of block-producing node stability
• Execution of mainnet snapshots
• Deployment and stress testing of L2 testnet validator nodes
• Monitoring of mainnet block production stability and network latency
• Multi-signature validation checks for cross-chain bridge services
• Optimization of mainnet node network configurations
• Monitoring of cross-chain bridge asset liquidity
• Improvements to internal efficiency and operational tooling

Disclaimer: Third-party developers develop all IOST DApps. The information provided here does not constitute investment advice. All content provided here is intended for education only. IOST bears no responsibility or liability for any loss that users may experience. Please contact the DApp team directly for any questions.

Ecosystem Development

IOST at KBW 2025: Showcasing RWA Innovation in Seoul

At KBW 2025, IOST highlighted its vision for Real-World Assets and deepened its connections in one of the world’s most vibrant crypto markets.

IOST at KBW 2025: Showcasing RWA Innovation in Seoul

Signet rings, IRL!

Official Launch of the IOST Signet Application

Enabling Hardware Deployment for Decentralized Identity Verification

Official Launch of the IOST Signet Application

Partnership with LinkLayerAI

Featured in Top 10 coins by Lunarcrush Galaxy Score

As we look ahead, we do so with genuine gratitude for everyone walking this path with us.

Trading volume

About IOST

IOST is a multi-chain ecosystem focused on RWA infrastructure. With a commitment to innovation, security, and community engagement, IOST continues to develop solutions that bridge the gap between traditional finance and decentralized technologies.

For more information about IOST and its initiatives, visit iost.io or join our community channels!

IOST | Link3

…………………………………………………….

IOST Monthly Report | October & November 2025 was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.

A new partnership to connect real-world interaction with on-chain experiences and support the growth of Japan’s crypto ecosystem.

We are pleased to announce that we have become an official sponsor of Crypto Lounge GOX, one of Japan’s largest and most active crypto communities. Through this partnership, we aim to help cultivate a space where real-world interaction and on-chain experiences come together seamlessly, further advancing the IOST ecosystem and supporting the development of Japan’s crypto industry.

As digital assets continue to integrate into everyday life — both as financial services and as investment options — we believe that physical spaces where communities can gather, learn, and exchange ideas play a critical role. As a key platform within Japan’s Web3 landscape, we are committed to contributing to the healthy and sustainable growth of the industry.

Since beginning our activities in Japan, we have prioritized offline engagement and direct community connection. Over the years, we have hosted developer meetups, university workshops, and a variety of in-person initiatives that bring users, builders, and partners together. For this reason, choosing GOX as the foundation of our offline activities is both a natural and strategic decision for us.

A Message from the Community

Arai, Co-operator of GOX and Founder of CRYPTO TIMES, shared the following:

“CRYPTO TIMES’ relationship with IOST dates back to 2018. We have grown together within Japan’s crypto space, and I am delighted that we can now collaborate once again here at GOX, a gathering place for Japan’s crypto community.”

Strengthening Japan’s Web3 Foundation

Through the real-world space that GOX provides, we will deliver hands-on, accessible, and enjoyable crypto experiences. Our goal is to enhance financial literacy around digital assets, while offering opportunities for people to interact directly with IOST’s technology and vision.

By supporting initiatives like GOX, we aim to contribute meaningfully to the growth, revitalization, and long-term sustainability of Japan’s Web3 ecosystem.

We look forward to deepening our engagement with the community and continuing to build a strong, interconnected future together.

About IOST

IOST is a multi-chain ecosystem focused on RWA infrastructure. With a commitment to innovation, security, and community engagement, IOST continues to develop solutions that bridge the gap between traditional finance and decentralized technologies.

For more information about IOST and its initiatives, visit iost.io or join our community channels!

IOST | Link3

IOST Becomes Official Sponsor of Crypto Lounge GOX, Strengthening Offline Community Engagement in… was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.

We’re proud to announce the official release of the IOST Signet App, now available for download on Android and iOS. This launch marks the activation of IOST’s hardware-based identity verification infrastructure — the next evolution of decentralized identity technology.

The Genesis Sale has sold out, and hardware units are fully manufactured and ready. The app coordinates global shipping for our founding members, whose Signet devices will begin deployment soon.

Stay tuned for a dedicated update covering shipping, ring sizing, and activation instructions once logistics are finalized.

Features & Functionalities

• Signet Rewards: Track your IOST earnings in real time. View accumulated rewards and claim them directly in the app.
• Proof of Heartbeat: Medical-grade sensors capture your unique cardiac rhythm, enabling continuous authentication that proves you’re human.
• Biometric Dashboard: Monitor your heart rate, activity, and sleep data. Your biological signals form an unforgeable identity profile anchored to your device.
• Ring Management: Handle ring sizing, shipping details, and device settings. Check battery level and connection status directly in the app.

Key Features:

• Real-time reward tracking and claiming
• Continuous biometric authentication
• Comprehensive health and activity monitoring
• Intuitive device setup and management
• IP68 water resistance
• 5–7 day battery life
• Military-grade encryption

Genesis Priority Access

Exclusive earning mechanisms will be integrated directly into the Signet app. Genesis batch holders receive priority access to future earning programs and network participation opportunities.

Early activation places you at the forefront of the decentralized identity verification network as these new mechanisms go live.

Infrastructure for RWA Tokenization

The Signet Ring addresses one of the biggest barriers to real-world asset (RWA) tokenization — secure, privacy-preserving identity verification at scale.

Using medical-grade PPG sensors, Signet captures heart rate variability patterns unique to each individual — biometric authentication that cannot be replicated through traditional attack vectors.

• No centralized databases
• No compromised credentials
• Hardware-anchored identity for digital assets

Building the Identity Layer

After seven years of processing billions in transactions, IOST is now deploying the identity infrastructure that will enable trillions in RWA tokenization.

The Signet system bridges physical presence with digital authentication, securing the verification layer that institutional-grade tokenization requires.

About IOST

IOST is a multi-chain ecosystem focused on RWA infrastructure. With a commitment to innovation, security, and community engagement, IOST continues to develop solutions that bridge the gap between traditional finance and decentralized technologies.

For more information about IOST and its initiatives, visit iost.io or join our community channels!

IOST | Link3

Official Launch of the IOST Signet Application was originally published in IOST on Medium, where people are continuing the conversation by highlighting and responding to this story.