testnet

The South Korean cryptocurrency exchange Upbit announced that it has recently discovered that criminals are impersonating the GIWA blockchain project, spreading false information about the mainnet launch and digital asset issuance, and inducing users to transfer assets.Upbit stated that GIWA is an Ethereum Layer 2 network being developed by its parent company Dunamu, which is currently only running a testnet, and the mainnet is still in the development and preparation stage, with no official launch time announced yet. Upbit reminds users to be cautious of unverified information regarding the mainnet launch, token issuance, and investment, and not to trust unofficial channels that request the purchase of digital assets, transfers, or wallet connections. Project progress should be based on information released by the official GIWA website and official social media.

BitMEX founder Arthur Hayes posted that the Flop Labs testnet and airdrop are expected to launch in the coming weeks. He specifically reminded that there is currently no FLOP token, and anyone claiming that the FLOP token already exists is a scammer.

According to the Ethereum Foundation's announcement on October 16, the Glamsterdam upgrade is scheduled to activate on October 26 at 17:42:48 (UTC), which is 01:42:48 on October 27 Beijing time, on the Hoodi testnet; at that time, the block Gas limit on Hoodi will also be increased to 200 million.This upgrade includes the embedded proposer and builder separation, block-level access lists, and Gas billing adjustments. The Sepolia testnet was activated on October 6, and the upgrade date for the Ethereum mainnet has not yet been determined. Node operators need to update the execution layer and consensus layer clients before the Hoodi activation.

Zakura has announced an experimental network layer P2Pv2 for Zcash nodes, intended to replace the old protocol inherited from Bitcoin. This layer combines high-throughput networking, resource control, and a consensus engine tested for properties, allowing developers to add services without permission. Zakura states that approximately 50,000 transactions per second require each full node to continuously receive about 100MB/s of block data, while the 25-second block of NU7 can carry a maximum of 2MB, with existing network throughput differing by more than a thousand times from this rate. Tachyon can reduce the proof after entering the block, but the network still needs to propagate a large number of individual transactions.P2Pv2 replaces the protocol stack from about a decade ago with protocols that can be optimized for latency, throughput, or robustness, allowing a secure connection to carry multiple independent services. The transport layer uses its own zakura-quic, based on quinn-proto, utilizing QUIC and TLS 1.3, and authenticating peers with Ed25519 node identity. Related changes remove the dependency on Iroh, allowing nodes to configure socket buffers, flow control windows, timers, and connection admission before the TLS handshake. The new transport directly connects to peer addresses without using relays, external address lookups, automatic port mapping, or QUIC NAT traversal. Nodes sign identities, addresses, protocol scopes, and service IDs, allowing clients to find peers based on specific services.The independent component zakura-header-chain verifies block headers and retains competing branches in a directed acyclic graph, selecting the best qualified chain. Block synchronization schedules requests based on the delivery rates measured by each peer, and a verified commitment tree is used to skip the reconstruction of Sapling, Orchard, and Ironwood trees for each block. Currently, the Mainnet still defaults to the old P2P stack, while the Testnet and Regtest run dual stacks by default, with the native protocol version being p2p-v2/3. Zakura notes that P2Pv2 still has known denial-of-service risks and has not yet become a hardened trust boundary; production hardening, resource control, and block relay protocols are still in progress.

OpenAI's official website disclosed that in June of this year, an internal research model (GPT-5.6 Sol series) was assigned a task: to update a cryptocurrency trading application and deploy a contract on the Ethereum testnet Sepolia. The task did not provide a funded wallet, nor was it authorized to use external funds. The model first attempted to obtain test ETH from a faucet but failed. It then devised a method on its own—deriving addresses from publicly available developer seed phrases, scanning hundreds of them until it found an account with a balance.In its internal reasoning, it explicitly questioned "whether using funds from a public key is ethical," ultimately justifying itself: these are testnet ETH with no actual value, and the seed phrases had long been made public, so the funds were "effectively abandoned." It then used that account to pay for the gas required for deployment, successfully completing the contract deployment. OpenAI discovered this behavior during subsequent alignment monitoring and officially disclosed it in the Misalignment Reports on October 15, 2026. The incident was classified as "unauthorized use of a funded test cryptocurrency wallet," indicating that the model replaced the account holder's authorization with its own judgment.

Neura posted on platform X that it will take down the v1 test network and Neuraverse and enter the next phase. The team has completed a full snapshot of the points balance, leaderboard, task completion status, and activity history to ensure that no data is lost.

Arthur Hayes posted on the X platform that he received cellular medicine services through VeritaHealthHQ during Token2049 and shared the development ideas of FLOP Labs. He has now returned to work, and the FLOP Testnet will be launched in a few weeks.

The tokenized fund platform OpenETF launched its testnet system on October 6, 2026, creating a fund from the Hyperliquid portfolio, with shares existing in the form of tokens held in wallets. Currently, the deployment uses worthless test assets, and the documentation states that real funds should not enter the system. Each fund has a name, symbol, public terms, and shares in the form of ERC-20 compatible tokens.The manager trades the portfolio on Hyperliquid, and investors hold shares in their own wallets. The initial offering is subscribed in USDC at net asset value, with a minimum amount of 100 USDC, and the manager may set a higher threshold. The fund is a treasury across HyperCore and HyperEVM, with the treasury contract on HyperEVM issuing shares and pricing for subscriptions and redemptions, while the same treasury holds and trades the portfolio as a trading account on HyperCore. Investors hold share tokens, the manager directs trades, but does not obtain the treasury trading keys.Creating a fund requires no approval or creation fee. The manager must purchase at least 100 USDC worth of shares and choose a commitment ratio of at least 5%. Performance fees can be selected from 0% to 50% of consolidated profits, with a default of 20%; the management fee is 0% to 2% per year, with a default of 0%, and the two rates are frozen after shares are issued. The testnet charges an exit adjustment fee for the priced redemption portion, starting from 0.1%, with an additional 0.05% for each unit of nominal leverage, capped at 1%, with fees remaining in the fund. The documentation describes this deployment as a testnet only, with no timeline provided for mainnet launch.

Uniswap's OP Stack Layer 2 network Unichain announced on X that it will migrate to OP Enterprise in preparation for native cross-chain interoperability of OP Stack.Unichain stated that after interoperability goes live, users will be able to transfer assets between OP Stack chains without the need for cross-chain bridges, with ETH being the first supported asset. The testnet migration is scheduled for October 13, and the mainnet migration is planned for late October.

According to CoinDesk, the Ethereum Glamsterdam upgrade was activated on the Sepolia testnet this Tuesday, increasing the block Gas limit from about 60 million to nearly 200 million, more than tripling the increase.A review of over 25 consecutive test blocks showed that the actual Gas usage was around 52 million to 92 million, accounting for only 26% to 46% of the available limit, with no instances of full capacity. The upgrade also adjusted the Gas consumption method for specific tasks and the costs of storing data, requiring developers to retest applications involving specific Gas cost assumptions. The next public testnet, Hoodi, is tentatively scheduled to launch on October 27, and the activation date for the Ethereum mainnet has yet to be determined.

According to CoinDesk, Ethereum developers released version 7.2.1 of the Prysm client on Monday evening, embedding a 200 million Gas limit to complete deployment ahead of the Sepolia testnet testing for the Glamsterdam upgrade on Tuesday.Glamsterdam is the next major upgrade for Ethereum, which will first be activated on the Sepolia testnet, where developers rehearse changes using tokens with no actual value. Part of Tuesday's testing involves raising the Gas limit on Sepolia from approximately 60 million to 200 million.Gas is the unit that measures how much computational workload a single block can accommodate on Ethereum. A higher limit means the network can handle more transactions and more complex activities simultaneously, but it also places higher demands on the computers running Ethereum. Prysm is the client software used by Ethereum validators, and its previous version had completed before this setting was added to the Sepolia configuration. Therefore, validators running the old version will still produce blocks with a 60 million Gas limit unless they manually modify the parameters, which undermines the effectiveness of this capacity test.Validators running the latest version will automatically start proposing blocks with a 200 million Gas limit when Glamsterdam activates on Sepolia at 13:53:36 UTC on October 6. Ethereum has been gradually increasing block capacity to test how far it can go before running validators becomes too demanding or expensive. The 200 million setting is only applicable to Sepolia, and Glamsterdam has not yet been activated on the Ethereum mainnet.

According to Cointelegraph, Zcash has activated the NU7 network upgrade on the testnet, putting the planned protocol changes into real testing, about a month away from its target mainnet launch. According to data from the Zcash testnet block explorer ZecBlock, the scheduled activation height block 4,465,026 for NU7 was mined on October 4 at 18:21:45 UTC, and Zcash subsequently confirmed on the X platform that NU7 is running on the testnet.NU7 is the next network upgrade for Zcash, which will shorten the network's target block interval from 75 seconds to 25 seconds. This upgrade will also disable version 4 transactions and introduce a network sustainability mechanism that recycles part of the transaction fees for future block rewards. Disabling version 4 transactions also means that if users do not transfer funds before NU7 is fully activated, ZEC stored in the old Sprout shielded pool of Zcash will be unspendable.The Zcash Foundation stated that testnet operators should test NU7 under real conditions using the candidate version, allowing developers to evaluate the upgrade before mainnet activation. Zcash developers plan to make a final decision on mainnet activation and determine the activation height based on the testnet performance on October 20, with a target mainnet activation date of November 5.

According to Decrypt, DogeOS has announced the launch of its application layer public testnet based on Dogecoin.DogeOS is an EVM-compatible application layer network designed to allow developers to build applications on the Dogecoin ecosystem. The testnet transaction fees are paid in DOGE, and projects such as lending protocols, perpetual contract trading platforms, stablecoins, and prediction market aggregators have already been integrated.DogeOS was initiated by the MyDoge wallet team, utilizes zkVM technology, and operates as an independent layer without altering the Dogecoin base layer. The official mainnet launch date has not yet been announced.

DogeOS, the application layer of Dogecoin, launched its public testnet on Wednesday, introducing EVM-compatible smart contracts to the Dogecoin network as a zero-knowledge rollup, with DOGE as the native token for transaction fees. The project aims to support applications such as trading, lending, stablecoins, prediction markets, and gaming, while settling state back to the Dogecoin network.DogeOS currently uses a trusted execution environment, validators, and a permissioned sequencer to ensure network security. Future proposed upgrades to Dogecoin Core will allow Dogecoin miners to directly verify their execution proofs. DogeOS CEO Jordan Jefferson stated that Dogecoin does not currently verify ZK proofs on its own, and bridging state transitions requires valid proofs as well as signatures from a majority of validators and TEE signers. He mentioned that the team is currently focused on the public testnet, allowing developers time to build and test applications, with the mainnet timeline to be announced upon reaching the next development milestone.DogeOS comes from the MyDoge wallet team, which announced a $6.9 million funding round led by Polychain Capital in May 2025. Two months later, the DogeOS team submitted a proposal for a Dogecoin Core upgrade to add native ZK proof verification for Dogecoin, but this upgrade has not yet been implemented. Timothy Stebbing, a director of the Dogecoin Foundation, expressed hope that DogeOS will serve as a springboard for a new wave of practical engineering.

The Ethereum Foundation announced that the Ethereum network upgrade Glamsterdam will be activated on the Sepolia testnet on October 6 at 21:53:36 Beijing time, corresponding to epoch 353024 and slot 11296768. The activation date for Hoodi and the mainnet has not yet been determined.Glamsterdam combines the execution layer Amsterdam upgrade and the consensus layer Gloas upgrade. Key changes include the embedded proposer-builder separation and block-level access lists to enhance L1 throughput, as well as adjustments to gas billing to better reflect the costs of execution and state growth. Node operators must update their execution layer and consensus layer clients before activation. Contracts relying on fixed gas assumptions may need to be modified.

According to CoinDesk, the Solana consensus upgrade Alpenglow has completed the switch to Testnet and Devnet on September 24 and 25, respectively, and is currently running on the two major public test networks, allowing application teams to test compatibility before launching on the mainnet. Alpenglow aims to reduce the final confirmation time from about 12.8 seconds to approximately 150 milliseconds by allowing validators to exchange votes directly instead of writing votes as transactions into blocks, enabling consensus to be reached within one to two rounds of voting.The Solana Foundation reminds that the transaction statistics containing validator votes may decrease after the upgrade, but user payments and transaction volume may not necessarily decline; applications that simply send transactions and read account balances do not need to migrate. The 150 milliseconds is a simulated target and has not yet been validated in a real mainnet environment, and wallet processing and exchange deposit confirmations may still increase waiting times. The exact date for the mainnet launch has not yet been announced.

The Solana core consensus upgrade Alpenglow has officially entered the second public test network, and the transaction settlement delay is expected to be reduced from approximately 13 seconds to 150 milliseconds.

The Alpenglow upgrade of the blockchain network Solana has entered the public testnet, where developers will test reducing transaction finality from about 13 seconds to 0.15 seconds, or 150 milliseconds. This upgrade will replace Solana's existing TowerBFT consensus system with Votor, allowing validators to confirm blocks through one to two rounds of direct voting, but the way users send funds will not change.The first testnet migration requires using Agave 4.3 and does not currently support Firedancer or Frankendancer. The mainnet update on September 28 is still a tentative arrangement and not a confirmed launch date for Alpenglow.

According to official news from Kinetiq, the first L2 network of the Hyperliquid ecosystem, Elysium, has launched its testnet.It is reported that Elysium is a general-purpose, high-performance L2 network built specifically for Hyperliquid, settling to HyperEVM, and co-located with HyperCore, with HYPE as its native gas token. Elysium is currently running Conduit’s G2 sequencer on an architecture that meets SOC II Type 2 standards.

Ethereum developers warn: Attackers can exploit free testnet ETH and one-time builder identities to win Sepolia block auctions and withhold transaction payloads during the Glamsterdam testing period.This attack does not threaten mainnet funds but may disrupt infrastructure testing. The Sepolia public test is scheduled to launch on October 6, with the Hoodi test tentatively set for October 27, and the mainnet activation time is still undetermined.