{"id":13944,"date":"2026-10-01T07:54:49","date_gmt":"2026-10-01T07:54:49","guid":{"rendered":"https:\/\/cryptonews.uk.com\/?p=13944"},"modified":"2026-10-01T07:54:49","modified_gmt":"2026-10-01T07:54:49","slug":"bases-cobalt-upgrade-adds-another-rule-to-affect-token-balances","status":"publish","type":"post","link":"https:\/\/cryptonews.uk.com\/?p=13944","title":{"rendered":"Base\u2019s Cobalt upgrade adds another rule to affect token balances"},"content":{"rendered":"<p><\/p>\n<div data-cs-editorial-figure-scope=\"\" data-cs-editorial-quote-scope=\"\" data-cs-image-viewer-scope=\"\" data-single-article-content=\"\">\n<p>Base\u2019s Cobalt upgrade, scheduled for mainnet Sept. 30 at 18:00 UTC, will let issuers of B20 tokens configure balance seizures separately from ordinary transfer restrictions. For a token that enables the feature, a holder could remain free to transfer while still being eligible for administrative reassignment.<\/p>\n<p>B20 is Base\u2019s native ERC-20-compatible token standard, offered in Asset and Stablecoin variants. It already gives administrators control over roles and policies governing balance movements, and now it will also govern the administrative powers over those balances.<\/p>\n<p>Role assignments identify who can exercise a particular power, while policy settings determine which accounts an operation can affect. Changing a token\u2019s rules and executing a balance operation involve distinct permission checks.<\/p>\n<h2>Separate seizure permissions<\/h2>\n<p>The new administrative operation, called <code>seizeWithMemo<\/code>, moves a specified amount from a holder to another address. It preserves total supply and skips ordinary transfer policies and holder allowances.<\/p>\n<p>An issuer must configure which accounts lose their exemption before the function can take their tokens. The setting, <code>SEIZE_EXEMPT_POLICY<\/code>, exempts everyone when left unset. Configuring eligibility alone is insufficient: execution requires <code>SEIZE_ROLE<\/code>, an unpaused seizure function, a permitted recipient, and sufficient balance.<\/p>\n<figure id=\"attachment_567737\" aria-describedby=\"caption-attachment-567737\" style=\"width: 720px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"shoggoth-infographic shoggoth-infographic-portrait wp-image-567737\" src=\"https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2.png\" alt=\"Comparison of Base's B20 ordinary transfers, optional administrative seizure and blocked-account burning: separate permissions, default seizure exemption, and different effects on token supply.\" width=\"720\" height=\"900\" srcset=\"https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2.png 1122w, https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2-240x300.png 240w, https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2-819x1024.png 819w, https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2-768x960.png 768w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\"\/><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"lazyload shoggoth-infographic shoggoth-infographic-portrait wp-image-567737\" src=\"https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2.png\" alt=\"Comparison of Base's B20 ordinary transfers, optional administrative seizure and blocked-account burning: separate permissions, default seizure exemption, and different effects on token supply.\" width=\"720\" height=\"900\" srcset=\"https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2.png 1122w, https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2-240x300.png 240w, https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2-819x1024.png 819w, https:\/\/cryptoslate.com\/wp-content\/uploads\/2026\/09\/exec-818c6136-e9b6-413c-86e6-9a43085c41e2-768x960.png 768w\" data-sizes=\"(max-width: 720px) 100vw, 720px\"\/><figcaption id=\"caption-attachment-567737\" class=\"wp-caption-text\">B20 issuers can separately allow transfers, enable administrative seizure or burn blocked balances, with seizure disabled by default.<\/figcaption><\/figure>\n<p>A separate recipient policy determines where the seized tokens can go, and leaving that policy unset allows any otherwise valid destination. The holder\u2019s ability to make an ordinary transfer does not answer either seizure-policy question.<\/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 Catalyst\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 Catalyst <\/span><\/p>\n<h2 id=\"cs-inline-newsletter-1-title\" class=\"cs-inline-newsletter__title\">What\u2019s moving crypto. Why it matters.<\/h2>\n<p id=\"cs-inline-newsletter-1-copy\" class=\"cs-inline-newsletter__copy\">Get CryptoSlate\u2019s essential stories and what to watch next.<\/p>\n<p>  <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" fill=\"currentColor\" viewbox=\"0 0 16 16\" aria-hidden=\"true\" focusable=\"false\"> <path d=\"M15 3.604H1v1.891h14v-1.89ZM1 7.208V16l7-3.926L15 16V7.208zM15 0H1v1.89h14z\"\/> <\/svg> <span>Published on Substack<\/span> <\/div>\n<div class=\"cs-inline-newsletter__form-shell\">\n<p id=\"cs-inline-newsletter-1-privacy\" class=\"cs-inline-newsletter__privacy\">Seven days a week. Unsubscribe anytime.<\/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<div class=\"cs-inline-newsletter__success\" role=\"status\" aria-live=\"polite\" aria-atomic=\"true\" tabindex=\"-1\"> <span class=\"cs-inline-newsletter__success-icon\" aria-hidden=\"true\"\/><\/p>\n<div>\n<h3 class=\"cs-inline-newsletter__success-title\">Check your inbox.<\/h3>\n<p class=\"cs-inline-newsletter__success-copy\">Your signup request was sent. If confirmation is required, follow the email from Substack.<\/p>\n<p class=\"cs-inline-newsletter__success-hint\">Look in spam or promotions if you don\u2019t see it.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/aside>\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\">Trump-backed $4 billion USD1 stablecoin has wallet powers its own GitHub does not show<\/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>B20\u2019s existing transfer policies check the sender and receiver, plus the executor for certain transfers on another account\u2019s behalf. Administrators can update those policies. Approving a spender does not remove the checks on the eventual transfer, but those ordinary transfer permissions are distinct from Cobalt\u2019s seizure rules.<\/p>\n<p>B20 also already has <code>burnBlocked<\/code>, which lets an authorized caller destroy tokens held by an account denied by the transfer sender policy. Cobalt marks that function deprecated but keeps it callable with its existing behavior.<\/p>\n<p>That leaves issuers with different ways to remove a holder\u2019s balance. Reassignment keeps the tokens in circulation at another address, while destroying the seized supply requires a subsequent burn. Seizure and burning have separate administrative roles and pause controls.<\/p>\n<p>Base\u2019s status page lists the mainnet upgrade as scheduled, with maintenance from 18:00 to 20:00 UTC. The upgrade overview lists Sepolia as live since Sept. 23 and mainnet as shipping on Sept. 30.<\/p>\n<p>The v1.4.2 release adds Cobalt mainnet support and instructs node operators to upgrade by Sept. 30 at 18:00 UTC.<\/p>\n<\/div>\n<p>Featured,Governance,Layer-2,Technology,stablecoinsstablecoins#Bases #Cobalt #upgrade #adds #rule #affect #token #balances1790841289<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Base\u2019s Cobalt upgrade, scheduled for mainnet Sept. 30 at 18:00 UTC, will let issuers of B20 tokens configure balance seizures separately from ordinary transfer restrictions. For a token that enables the feature, a holder could remain free to transfer while still being eligible for administrative reassignment. B20 is Base\u2019s native ERC-20-compatible token standard, offered in<\/p>\n","protected":false},"author":1,"featured_media":13945,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[494,7213,5551,5531,7212,452,282,665,1300],"class_list":["post-13944","post","type-post","status-publish","format-standard","has-post-thumbnail","category-ethereum","tag-adds","tag-affect","tag-balances","tag-bases","tag-cobalt","tag-rule","tag-stablecoins","tag-token","tag-upgrade"],"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>Base\u2019s Cobalt upgrade adds another rule to affect token balances - Crypto News: Latest Cryptocurrency News and Analysis<\/title>\n<meta name=\"description\" content=\"Base\u2019s Cobalt upgrade adds optional seizure controls that let B20 issuers reassign holder balances under separate permissions.\" \/>\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=13944\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Base\u2019s Cobalt upgrade adds another rule to affect token balances\" \/>\n<meta property=\"og:description\" content=\"Base\u2019s Cobalt upgrade adds optional seizure controls that let B20 issuers reassign holder balances under separate permissions.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cryptonews.uk.com\/?p=13944\" \/>\n<meta property=\"og:site_name\" content=\"Crypto News: Latest Cryptocurrency News and Analysis\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-01T07:54:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/10\/base-cobalt-b20-balance-controls-standard.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1672\" \/>\n\t<meta property=\"og:image:height\" content=\"941\" \/>\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=13944\",\"url\":\"https:\/\/cryptonews.uk.com\/?p=13944\",\"name\":\"Base\u2019s Cobalt upgrade adds another rule to affect token balances - Crypto News: Latest Cryptocurrency News and Analysis\",\"isPartOf\":{\"@id\":\"https:\/\/cryptonews.uk.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/cryptonews.uk.com\/?p=13944#primaryimage\"},\"image\":{\"@id\":\"https:\/\/cryptonews.uk.com\/?p=13944#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/10\/base-cobalt-b20-balance-controls-standard.jpg\",\"datePublished\":\"2026-10-01T07:54:49+00:00\",\"author\":{\"@id\":\"https:\/\/cryptonews.uk.com\/#\/schema\/person\/822778c5844e0d16d43dce6630f4f1bf\"},\"description\":\"Base\u2019s Cobalt upgrade adds optional seizure controls that let B20 issuers reassign holder balances under separate permissions.\",\"breadcrumb\":{\"@id\":\"https:\/\/cryptonews.uk.com\/?p=13944#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cryptonews.uk.com\/?p=13944\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/cryptonews.uk.com\/?p=13944#primaryimage\",\"url\":\"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/10\/base-cobalt-b20-balance-controls-standard.jpg\",\"contentUrl\":\"https:\/\/cryptonews.uk.com\/wp-content\/uploads\/2026\/10\/base-cobalt-b20-balance-controls-standard.jpg\",\"width\":1672,\"height\":941},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cryptonews.uk.com\/?p=13944#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/cryptonews.uk.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Base\u2019s Cobalt upgrade adds another rule to affect token balances\"}]},{\"@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; 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