{"id":12839,"date":"2026-09-04T22:25:15","date_gmt":"2026-09-04T22:25:15","guid":{"rendered":"https:\/\/cryptonews.uk.com\/?p=12839"},"modified":"2026-09-04T22:25:15","modified_gmt":"2026-09-04T22:25:15","slug":"solana-v1-can-halt-rpc-readers-and-break-fee-caps","status":"publish","type":"post","link":"https:\/\/cryptonews.uk.com\/?p=12839","title":{"rendered":"Solana v1 can halt RPC readers and break fee caps"},"content":{"rendered":"<p><\/p>\n<div data-single-article-content=\"\">\n<p>Solana\u2019s v1 transaction format promises more than three times as much room per transaction, but RPC clients, indexers, relayers and fee sponsors that are not ready for it can fail in two very different ways: some systems stop, while others keep running with the wrong resource limits.<\/p>\n<p>Solana\u2019s live upgrade page still lists v1 as not activated on mainnet as of Sept. 4. Testnet is active and devnet is live in epoch 1140. A Solana changelog published Aug. 28 said v1 transactions were \u201ccoming soon,\u201d leaving infrastructure operators a pre-activation window to update.<\/p>\n<p>V1 raises the maximum payload from 1,232 bytes to 4,096 bytes, about a 3.3-fold increase. Legacy and v0 transactions keep their existing limits and behavior, so users and applications that continue using those formats do not need to migrate.<\/p>\n<div class=\"cs-article-embed\">\n<p> <span class=\"cs-article-embed__related-reading\">Related Reading<\/span><\/p>\n<h3 class=\"cs-article-embed__title\">Solana\u2019s Agave 4.2 activation target arrives with mainnet feature gates still pending<\/h3>\n<\/p>\n<p> <span class=\"cs-article-embed__arrow\" aria-hidden=\"true\"> <i class=\"fa-light fa-arrow-up-right\"\/> <\/span> <\/div>\n<p>RPC consumers must pass the integer <code>maxSupportedTransactionVersion: 1<\/code> when using <code>getTransaction<\/code>, <code>getBlock<\/code> or <code>blockSubscribe<\/code>. Without that opt-in, a v1 <code>getTransaction<\/code> request returns error <code>-32015<\/code>, one v1 transaction makes <code>getBlock<\/code> fail for the entire block, and <code>blockSubscribe<\/code> emits <code>block: null<\/code> and stops advancing at the first affected slot.<\/p>\n<p>The parameter only tells the RPC service the highest format the client can decode. It does not request v1 data or change how legacy and v0 transactions are returned.<\/p>\n<div class=\"cs-article-embed\">\n<p> <span class=\"cs-article-embed__related-reading\">Related Reading<\/span><\/p>\n<h3 class=\"cs-article-embed__title\">Solana takes its first step toward sub-second speed by cutting block confirmation times across the network<\/h3>\n<\/p>\n<p> <span class=\"cs-article-embed__arrow\" aria-hidden=\"true\"> <i class=\"fa-light fa-arrow-up-right\"\/> <\/span> <\/div>\n<p>Other failures are quieter. V1 moves compute-unit limits, loaded-account data limits and priority fees into a <code>transactionConfig<\/code> object instead of <code>ComputeBudget<\/code> instructions. An indexer that keeps scanning those instructions will report a zero compute budget for every v1 transaction without raising an error.<\/p>\n<aside id=\"cs-inline-newsletter-1\" class=\"cs-inline-newsletter\" data-inline-newsletter=\"\" data-newsletter-placement=\"article-midpoint\" data-newsletter-pending-label=\"Joining\u2026\" data-newsletter-pending-status=\"Joining the Daily Brief\u2026\" data-newsletter-email-required-message=\"Before sending, please provide your email address.\" aria-labelledby=\"cs-inline-newsletter-1-title\" aria-describedby=\"cs-inline-newsletter-1-copy\">\n<div class=\"cs-inline-newsletter__inner\">\n<div class=\"cs-inline-newsletter__content\"> <span class=\"cs-inline-newsletter__eyebrow\"> <i class=\"fa-regular fa-envelope\" aria-hidden=\"true\"\/> The Daily Brief <\/span><\/p>\n<h2 id=\"cs-inline-newsletter-1-title\" class=\"cs-inline-newsletter__title\">The signal, before the noise.<\/h2>\n<p id=\"cs-inline-newsletter-1-copy\" class=\"cs-inline-newsletter__copy\">Start your day with the crypto stories moving markets, decoded by CryptoSlate\u2019s editors.<\/p>\n<\/div>\n<div class=\"cs-inline-newsletter__form-shell\">\n<p class=\"cs-inline-newsletter__form-heading\">One email. Everything that matters.<\/p>\n<p id=\"cs-inline-newsletter-1-privacy\" class=\"cs-inline-newsletter__privacy\">Free to join. Unsubscribe any time.<\/p>\n<p> <i class=\"fa-regular fa-circle-xmark\" aria-hidden=\"true\"\/> <span>Whoops, looks like there was a problem. Please try again.<\/span><\/p>\n<p> <i class=\"fa-regular fa-circle-check\" aria-hidden=\"true\"\/> <span><strong>You\u2019re on the list.<\/strong> Your next Daily Brief is on its way.<\/span><\/p>\n<\/div>\n<\/div>\n<\/aside>\n<p>Geyser and gRPC consumers face a related trap. The protobuf\u2019s <code>versioned<\/code> flag is true for both v0 and v1. A stale consumer can therefore label v1 as v0 and preserve an empty budget. The fix is to regenerate the protobuf stubs and check for <code>Message.config<\/code>, field 7, before reading the flag.<\/p>\n<p>Relayers, paymasters and other server signers must change their policy checks too. A sponsor that enforces a fee cap by scanning <code>ComputeBudget<\/code> instructions no longer has a binding cap because those instructions may appear in v1 but execute as no-ops. Servers must identify the <code>0x81<\/code> v1 prefix and enforce the fee and resource limits in <code>transactionConfig<\/code>. This is an application-control failure, not a consensus flaw or evidence that funds are automatically at risk.<\/p>\n<div class=\"cs-article-embed\">\n<p> <span class=\"cs-article-embed__related-reading\">Related Reading<\/span><\/p>\n<h3 class=\"cs-article-embed__title\">Ethereum and Solana are hosting trillions in dollar volume, yet their native tokens risk losing direct consumer demand<\/h3>\n<\/p>\n<p> <span class=\"cs-article-embed__arrow\" aria-hidden=\"true\"> <i class=\"fa-light fa-arrow-up-right\"\/> <\/span> <\/div>\n<p>Onchain programs face a harder constraint: Solana says no current sysvar or syscall exposes the v1 message configuration. Programs that gate behavior on introspected <code>ComputeBudget<\/code> instructions must stop relying on that check when v1 goes live.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-560153\" src=\"https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-63b8a4ef-d645-4414-8e3c-a6b29cae03d3.png\" alt=\"Solana v1 fault map showing the 4,096-byte limit and required updates for RPC readers, indexers, fee sponsors and onchain programs\" width=\"720\" height=\"900\"\/><img decoding=\"async\" class=\"lazyload aligncenter wp-image-560153\" src=\"https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-63b8a4ef-d645-4414-8e3c-a6b29cae03d3.png\" alt=\"Solana v1 fault map showing the 4,096-byte limit and required updates for RPC readers, indexers, fee sponsors and onchain programs\" width=\"720\" height=\"900\"\/><\/p>\n<h2>Who needs to upgrade for Solana v1<\/h2>\n<p>The minimum reader-capable releases include <code>@solana\/kit<\/code> 8.0.0, <code>@solana\/web3.js<\/code> 3.0.0-rc.3, Rust <code>solana-*<\/code> 4.2.x, Python <code>solders<\/code> 0.29.0 and <code>solana-go<\/code> 1.23.0. The 1.x web3.js line can read v1 from 1.99.0-beta.0 but cannot build, sign or send it.<\/p>\n<p>Yellowstone users need at least <code>yellowstone-grpc-proto<\/code> 12.6.0, geyser plugin 15.1.1, gRPC client 12.0.0 or <code>@triton-one\/yellowstone-grpc<\/code> 6.0.0, depending on their stack.<\/p>\n<p>Creating v1 transactions is optional. Teams that opt in must set compute-unit and loaded-account data limits explicitly because both default to zero, remove no-op <code>ComputeBudget<\/code> instructions, stop using address lookup tables and use base64 for payloads larger than 1,232 bytes. The immediate deadline is not a universal wallet migration. It is a compatibility test for every service that may read, index or sponsor somebody else\u2019s v1 transaction.<\/p>\n<\/div>\n<p>Featured,Technology,Solana,Solana foundationSolana,Solana foundation#Solana #halt #RPC #readers #break #fee #caps1788560715<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Solana\u2019s v1 transaction format promises more than three times as much room per transaction, but RPC clients, indexers, relayers and fee sponsors that are not ready for it can fail in two very different ways: some systems stop, while others keep running with the wrong resource limits. Solana\u2019s live upgrade page still lists v1 as<\/p>\n","protected":false},"author":1,"featured_media":12840,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[2046,3328,2480,4516,6746,6745,152,5122],"class_list":["post-12839","post","type-post","status-publish","format-standard","has-post-thumbnail","category-ethereum","tag-break","tag-caps","tag-fee","tag-halt","tag-readers","tag-rpc","tag-solana","tag-solana-foundation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.6 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Solana v1 can halt RPC readers and break fee caps - Crypto News: Latest Cryptocurrency News and Analysis<\/title>\n<meta name=\"description\" content=\"Solana v1 can halt incompatible RPC readers and let outdated fee sponsors enforce the wrong limits before mainnet activation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cryptonews.uk.com\/?p=12839\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Solana v1 can halt RPC readers and break fee caps\" \/>\n<meta property=\"og:description\" content=\"Solana v1 can halt incompatible RPC readers and let outdated fee sponsors enforce the wrong limits before mainnet activation.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cryptonews.uk.com\/?p=12839\" \/>\n<meta property=\"og:site_name\" content=\"Crypto News: Latest Cryptocurrency News and Analysis\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-04T22:25:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/09\/solana-rpc-transaction-jam.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"725\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u884c\u653f\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u884c\u653f\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cryptonews.uk.com\/?p=12839\",\"url\":\"https:\/\/cryptonews.uk.com\/?p=12839\",\"name\":\"Solana v1 can halt RPC readers and break fee caps - Crypto News: Latest Cryptocurrency News and Analysis\",\"isPartOf\":{\"@id\":\"https:\/\/cryptonews.uk.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/cryptonews.uk.com\/?p=12839#primaryimage\"},\"image\":{\"@id\":\"https:\/\/cryptonews.uk.com\/?p=12839#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/09\/solana-rpc-transaction-jam.jpg\",\"datePublished\":\"2026-09-04T22:25:15+00:00\",\"author\":{\"@id\":\"https:\/\/cryptonews.uk.com\/#\/schema\/person\/822778c5844e0d16d43dce6630f4f1bf\"},\"description\":\"Solana v1 can halt incompatible RPC readers and let outdated fee sponsors enforce the wrong limits before mainnet activation.\",\"breadcrumb\":{\"@id\":\"https:\/\/cryptonews.uk.com\/?p=12839#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cryptonews.uk.com\/?p=12839\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/cryptonews.uk.com\/?p=12839#primaryimage\",\"url\":\"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/09\/solana-rpc-transaction-jam.jpg\",\"contentUrl\":\"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/09\/solana-rpc-transaction-jam.jpg\",\"width\":1280,\"height\":725},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cryptonews.uk.com\/?p=12839#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/cryptonews.uk.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Solana v1 can halt RPC readers and break fee caps\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cryptonews.uk.com\/#website\",\"url\":\"https:\/\/cryptonews.uk.com\/\",\"name\":\"Crypto News: Latest Cryptocurrency News and Analysis\",\"description\":\"Latest Crypto &amp; Bitcoin News\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/cryptonews.uk.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/cryptonews.uk.com\/#\/schema\/person\/822778c5844e0d16d43dce6630f4f1bf\",\"name\":\"\u884c\u653f\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/cryptonews.uk.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/e4c2d23409b09e004cef3facbe677e95c5401f9e29680f3a311e0130c5748089?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/e4c2d23409b09e004cef3facbe677e95c5401f9e29680f3a311e0130c5748089?s=96&d=mm&r=g\",\"caption\":\"\u884c\u653f\"},\"sameAs\":[\"http:\/\/demo3.aiwalls.com\/coinbase\"],\"url\":\"https:\/\/cryptonews.uk.com\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Solana v1 can halt RPC readers and break fee caps - Crypto News: Latest Cryptocurrency News and Analysis","description":"Solana v1 can halt incompatible RPC readers and let outdated fee sponsors enforce the wrong limits before mainnet activation.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/cryptonews.uk.com\/?p=12839","og_locale":"en_US","og_type":"article","og_title":"Solana v1 can halt RPC readers and break fee caps","og_description":"Solana v1 can halt incompatible RPC readers and let outdated fee sponsors enforce the wrong limits before mainnet activation.","og_url":"https:\/\/cryptonews.uk.com\/?p=12839","og_site_name":"Crypto News: Latest Cryptocurrency News and Analysis","article_published_time":"2026-09-04T22:25:15+00:00","og_image":[{"width":1280,"height":725,"url":"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/09\/solana-rpc-transaction-jam.jpg","type":"image\/jpeg"}],"author":"\u884c\u653f","twitter_card":"summary_large_image","twitter_misc":{"Written by":"\u884c\u653f","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/cryptonews.uk.com\/?p=12839","url":"https:\/\/cryptonews.uk.com\/?p=12839","name":"Solana v1 can halt RPC readers and break fee caps - Crypto News: Latest Cryptocurrency News and Analysis","isPartOf":{"@id":"https:\/\/cryptonews.uk.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/cryptonews.uk.com\/?p=12839#primaryimage"},"image":{"@id":"https:\/\/cryptonews.uk.com\/?p=12839#primaryimage"},"thumbnailUrl":"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/09\/solana-rpc-transaction-jam.jpg","datePublished":"2026-09-04T22:25:15+00:00","author":{"@id":"https:\/\/cryptonews.uk.com\/#\/schema\/person\/822778c5844e0d16d43dce6630f4f1bf"},"description":"Solana v1 can halt incompatible RPC readers and let outdated fee sponsors enforce the wrong limits before mainnet activation.","breadcrumb":{"@id":"https:\/\/cryptonews.uk.com\/?p=12839#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/cryptonews.uk.com\/?p=12839"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/cryptonews.uk.com\/?p=12839#primaryimage","url":"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/09\/solana-rpc-transaction-jam.jpg","contentUrl":"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/09\/solana-rpc-transaction-jam.jpg","width":1280,"height":725},{"@type":"BreadcrumbList","@id":"https:\/\/cryptonews.uk.com\/?p=12839#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/cryptonews.uk.com\/"},{"@type":"ListItem","position":2,"name":"Solana v1 can halt RPC readers and break fee caps"}]},{"@type":"WebSite","@id":"https:\/\/cryptonews.uk.com\/#website","url":"https:\/\/cryptonews.uk.com\/","name":"Crypto News: Latest Cryptocurrency News and Analysis","description":"Latest Crypto &amp; Bitcoin News","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/cryptonews.uk.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/cryptonews.uk.com\/#\/schema\/person\/822778c5844e0d16d43dce6630f4f1bf","name":"\u884c\u653f","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/cryptonews.uk.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/e4c2d23409b09e004cef3facbe677e95c5401f9e29680f3a311e0130c5748089?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/e4c2d23409b09e004cef3facbe677e95c5401f9e29680f3a311e0130c5748089?s=96&d=mm&r=g","caption":"\u884c\u653f"},"sameAs":["http:\/\/demo3.aiwalls.com\/coinbase"],"url":"https:\/\/cryptonews.uk.com\/?author=1"}]}},"_links":{"self":[{"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=\/wp\/v2\/posts\/12839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12839"}],"version-history":[{"count":0,"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=\/wp\/v2\/posts\/12839\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=\/wp\/v2\/media\/12840"}],"wp:attachment":[{"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12839"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12839"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cryptonews.uk.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}