SOL showed no price reaction to the upgrade, trading modestly lower on the day in line with a broader soft session across crypto, consistent with the fact that this is an infrastructure change aimed at developers rather than a catalyst that changes network economics or user costs. The upgrade doesn’t touch Solana’s transactions-per-second capacity or fees, so it isn’t a throughput or scalability story in the way past network upgrades have sometimes been framed. The more relevant medium-term angle is competitive positioning: by narrowing a structural gap with Ethereum on transaction capacity, Solana becomes more viable for certain complex application types, including zero-knowledge proofs and multisignature corporate wallets, that previously required workarounds. Whether that attracts meaningful new developer activity, and in turn transaction volume, is the thing to watch over coming months rather than this upgrade itself.
Solana just gave developers three times more room per transaction, a real capability upgrade, but not a speed or price story.
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Just like the earlier post:
I’ve added in explnatory items below the main piece, if you need.
As for price impact, the crypto complex has been somewhat weighed on more broadly by the (not unexpected) news earlier, not just a ‘sell the fact’ as I suggest above:
- Clarity failure: What the BTC/USD chart is showing, and what to watch next
- Crypto bill fails key Senate vote as bitcoin slides on regulatory setback
Summary:
- Solana activated its “Transaction V1” format on mainnet on September 15, raising the maximum transaction size from 1,232 bytes to 4,096 bytes
- The upgrade allows developers to fit more instructions, signatures and data into a single atomic transaction rather than splitting complex operations across multiple transactions
- Supported use cases include zero-knowledge proofs, multisignature corporate wallets and other data-heavy operations
- The change affects transaction capacity only, not transaction throughput or network speed, and SOL’s price showed no reaction to the news
- Existing transaction formats remain usable, though protocols must upgrade to the new v1 format to benefit from the larger size limit
- The upgrade narrows a long standing structural gap between Solana and Ethereum on transaction data capacity
Solana has activated a major mainnet upgrade that more than triples the amount of data a single transaction can carry, raising the maximum transaction size from 1,232 bytes to 4,096 bytes.
The change, known as the Transaction V1 format, went live at the start of mainnet epoch 1,035 at approximately 01:00 UTC on September 15. The previous 1,232 byte limit had been in place for years and was tied to the size of a single network data packet, meaning any operation requiring more space had to be split across multiple transactions or handled through developer workarounds. The new format also introduces inline account handling in place of the older Address Lookup Tables, though the existing 64-account limit per transaction remains unchanged.
The practical effect is that developers can now bundle more complex operations into a single atomic transaction, meaning all the steps either succeed or fail together, rather than breaking them up. Cited use cases include zero-knowledge proofs, multisignature wallets used by companies and institutions, and other applications that involve carrying more data or more signatures than the previous format comfortably allowed.
Importantly, the upgrade changes transaction capacity, not transaction throughput. It does not alter how many transactions Solana can process per second, nor does it change network fees or speed. Several outlets tracking the rollout noted that SOL’s price did not react to the announcement, trading slightly lower on the day in line with a broader soft session across major cryptocurrencies, consistent with an upgrade whose relevance sits primarily with developers and infrastructure providers rather than traders. Wallet providers, indexers and RPC operators need to update their software to correctly read and support the new format, while existing transactions in the older format remain fully functional.
The upgrade is widely described as narrowing a structural gap between Solana and Ethereum, which has historically supported larger transaction sizes. Whether it translates into a meaningful pickup in developer activity or new application types being built on Solana is likely to become clearer only over the coming months.
Sidebar: Understanding the jargon
What is Solana? Solana is a blockchain network, similar in concept to Ethereum, designed for fast, low-cost transactions. It’s used to run decentralized applications (apps that operate on the blockchain rather than through a central company), including trading platforms, wallets and tokenized assets. SOL is its native cryptocurrency, used to pay transaction fees and secure the network.
Transaction: A single instruction sent to a blockchain, telling it to do something, transfer coins, swap tokens, sign a multi-party agreement, and so on. Every transaction has a maximum allowed size, measured in bytes, which limits how much information it can carry.
Byte: A basic unit of digital data. Transaction size limits are measured in bytes because that’s how the underlying network packets that carry the data are structured, it’s a technical constraint rather than an arbitrary rule.
Atomic transaction: A transaction where every step inside it either all succeed together or all fail together, with nothing partially completed. This matters for complex operations like multi-step trades, where you don’t want step one to succeed and step two to fail, leaving things in a broken state.
Zero-knowledge proof (ZK proof): A cryptographic method that lets one party prove something is true (for example, that they have enough funds, or meet some condition) without revealing the underlying private data itself. These proofs tend to require more data than simple transactions, which is why a bigger transaction size limit helps support them.
Multisignature (multisig) wallet: A wallet that requires approval from more than one party before a transaction can go through, similar to a bank account requiring two signatures to release funds. Common for companies and institutions managing shared funds, since it adds a layer of security against a single point of failure.
Throughput vs capacity: Throughput refers to how many transactions a network can process per second, essentially its overall speed. Capacity, in this context, refers to how much data fits inside a single transaction. This upgrade increases capacity, not throughput, meaning Solana isn’t faster as a result, but each individual transaction can now do more.
This article was written by Eamonn Sheridan at investinglive.com.