Correct stale MIP-12 status and facts

content/mips/_overview.md

@@ -16,9 +16,12 @@ notes, and a path to activation.
 - **MIP-8 — Page-ified Storage.** Aligns EVM storage layout with the underlying
   hardware page boundary, reducing I/O amplification on commits. Final and
   active on Monad mainnet since the MONAD_TEN upgrade on September 2, 2026.
-- **MIP-12 — Decrease Vote Pace.** Shortens the consensus vote pace from 400ms
-  to 300ms, with the per-block limits and the block reward scaled down
-  proportionally. A draft consensus-layer change, not yet live on mainnet.
+- **MIP-12 — Decrease Block Time.** Final; its 400ms to 300ms target vote pace
+  activated on Monad mainnet at round 89,758,000 (July 23, 2026). Per-block
+  transaction, gas, and byte limits fell 25%; the block reward fell from 25 to
+  18 MON (28%). At the nominal cadence, capacity limits per second stay the
+  same while rewards change from 62.5 to 60 MON per second. Target cadence does
+  not guarantee observed latency or finality; see `mip-12.md` for dated sources.
 
 > TODO(author): paste the canonical one-paragraph summary for each MIP here.
 > Anything below this line in this file is treated as authoritative context by

content/mips/mip-12.md

@@ -1,40 +1,37 @@
-# MIP-12: Decrease Vote Pace
+# MIP-12: Decrease Block Time
 
-**Status:** Draft (not live on mainnet)
-**Summary:** Shortens the consensus vote pace from 400ms to 300ms, a 25%
-reduction, with the related per-block parameters scaled down proportionally so
-blocks arrive sooner while each one carries a little less.
+**Proposal status:** Final
 
-## Motivation
+**Network status:** Activated on Monad mainnet at round 89,758,000 (July 23, 2026, approximately 14:30 UTC).
 
-A block every 300ms instead of every 400ms means about 33% more blocks each
-second. Because each block now holds 25% fewer transactions, less gas, and
-fewer bytes, the network's per-second capacity stays roughly the same: it is a
-faster pipe, not a bigger one. Faster votes also mean faster confirmations and
-finality.
+**Verified:** October 4, 2026, against the [canonical MIP-12 specification](https://github.com/monad-crypto/MIPs/blob/2a7e18894f1e55fb043080cb8cef15c7f5647768/MIPs/MIP-12.md) and the [official release notes](https://docs.monad.xyz/developer-essentials/changelog/releases#v0-15-1).
 
-## Specification
+## Summary
 
-Vote pace leads the change, dropping from 400ms to 300ms. Four more per-block
-parameters scale down with it:
+MIP-12 is a Final consensus-layer change that reduced the target vote pace from 400ms to 300ms. The mainnet activation was recorded at round 89,758,000. The 300ms figure describes the protocol's target cadence; it does not guarantee a particular observed block latency or time to finality.
 
-- **Vote pace:** how often validators vote on a block. Lower means faster
-  confirmations and finality. Drops from 400ms to 300ms.
-- **Transactions per block:** the most transactions that can be packed into a
-  single block. Scales down proportionally.
-- **Compute per block (gas):** the total computation a block is allowed to do,
-  where gas is the EVM's unit for compute. Scales down proportionally.
-- **Data per block (bytes):** the largest a single block can get, measured in
-  bytes. Scales down proportionally.
-- **Block reward:** the MON paid to the validator that proposes a block. Shrinks
-  for the same reason, since blocks are smaller and more frequent.
+## Parameter changes
 
-## Backwards compatibility
+| Parameter | Before | After | Change |
+| --- | ---: | ---: | --- |
+| Target vote pace | 400ms | 300ms | 25% shorter |
+| Transactions per block | 5,000 | 3,750 | 25% lower |
+| Proposal gas limit | 200,000,000 | 150,000,000 | 25% lower |
+| Proposal byte limit | 2,000,000 bytes | 1,500,000 bytes | 25% lower |
+| Block reward | 25 MON | 18 MON | 28% lower |
 
-This is a consensus-layer change only. The execution layer is unaffected and
-existing contracts behave exactly as before. Activating it requires a hard fork
-on the consensus client.
+At the nominal target cadence, the transaction, gas, and byte limits per second stay the same: 12,500 transactions, 500 million gas, and 5 million bytes per second. The reward rate changes from 62.5 to 60 MON per second at those nominal rates; it is not unchanged.
 
-## Discussion link
+## Scope and interpretation
 
-https://mipland.org/mip-12
+The MIP changes consensus parameters and does not change execution-layer behavior. A shorter target vote pace is not a measurement of observed block latency or finality, which can vary with network conditions.
+
+## Sources
+
+- [Canonical MIP-12 specification (pinned revision)](https://github.com/monad-crypto/MIPs/blob/2a7e18894f1e55fb043080cb8cef15c7f5647768/MIPs/MIP-12.md) — proposal status and parameter values.
+- [Monad v0.15.1 release notes](https://docs.monad.xyz/developer-essentials/changelog/releases#v0-15-1) — mainnet activation round and date.
+- [Monad v0.15.0 release notes](https://docs.monad.xyz/developer-essentials/changelog/releases#v0-15-0) — testnet activation at round 43,821,000 (approximately July 9, 2026, 14:30 UTC).
+
+## Discussion
+
+https://forum.monad.xyz/t/mip-12-decrease-vote-pace/488

src/app/mip-12/opengraph-image.tsx

@@ -1,7 +1,7 @@
 import { ImageResponse } from "next/og";
 
 export const runtime = "edge";
-export const alt = "MIP-12: Decrease Vote Pace";
+export const alt = "MIP-12: Decrease Block Time";
 export const size = { width: 1200, height: 630 };
 export const contentType = "image/png";
 
@@ -42,7 +42,7 @@ export default function Image() {
             marginBottom: "40px",
           }}
         >
-          Decrease Vote Pace
+          Decrease Block Time
         </div>
 
         {/* 400 → 300 */}

src/app/mip-12/page.tsx

@@ -6,14 +6,14 @@ import DiscussionCtaSection from "@/components/DiscussionCtaSection";
 import FooterSection from "@/components/FooterSection";
 
 export const metadata: Metadata = {
-  title: "MIP-12: Decrease Vote Pace",
+  title: "MIP-12: Decrease Block Time",
   description:
-    "A plain-language look at MIP-12: shortening block vote pace from 400ms to 300ms, and what each parameter change actually means.",
+    "MIP-12 is Final and its 400ms to 300ms target vote pace activated on Monad mainnet. Explore the exact parameter changes and their effects on capacity and rewards.",
   alternates: { canonical: "/mip-12" },
   openGraph: {
-    title: "MIP-12: Decrease Vote Pace",
+    title: "MIP-12: Decrease Block Time",
     description:
-      "A plain-language look at MIP-12: shortening block vote pace from 400ms to 300ms, and what each parameter change actually means.",
+      "MIP-12 is Final and its 400ms to 300ms target vote pace activated on Monad mainnet. Explore the exact parameter changes and their effects on capacity and rewards.",
     url: "/mip-12",
   },
 };

src/app/page.tsx

@@ -48,7 +48,7 @@ const structuredData = {
           ["MIP-3: Linear Memory", "/mip-3"],
           ["MIP-4: Reserve Balance Introspection", "/mip-4"],
           ["MIP-7: Extension Opcodes", "/mip-7"],
-          ["MIP-12: Decrease Vote Pace", "/mip-12"],
+          ["MIP-12: Decrease Block Time", "/mip-12"],
         ].map(([name, path], index) => ({
           "@type": "ListItem",
           position: index + 1,

src/components/FooterSection.tsx

@@ -3,7 +3,12 @@
 import { usePathname } from "next/navigation";
 import { useLanguage } from "@/i18n/LanguageContext";
 
-const FOOTER_DATA: Record<string, { specUrl: string; specLabel: string; noteKey: string }> = {
+const FOOTER_DATA: Record<string, {
+  specUrl: string;
+  specLabel: string;
+  noteKey: string;
+  activationUrl?: string;
+}> = {
   "/mip-8": {
     specUrl: "https://github.com/monad-crypto/MIPs/blob/main/MIPs/MIP-8.md",
     specLabel: "MIP-8 on GitHub",
@@ -25,9 +30,12 @@ const FOOTER_DATA: Record<string, { specUrl: string; specLabel: string; noteKey:
     noteKey: "footer.mip7Note",
   },
   "/mip-12": {
-    specUrl: "https://github.com/monad-crypto/MIPs/blob/main/MIPs/MIP-12.md",
+    specUrl:
+      "https://github.com/monad-crypto/MIPs/blob/2a7e18894f1e55fb043080cb8cef15c7f5647768/MIPs/MIP-12.md",
     specLabel: "MIP-12 on GitHub",
     noteKey: "footer.mip12Note",
+    activationUrl:
+      "https://docs.monad.xyz/developer-essentials/changelog/releases#v0-15-1",
   },
 };
 
@@ -52,6 +60,16 @@ export default function FooterSection() {
             >
               {data.specLabel} →
             </a>
+            {data.activationUrl && (
+              <a
+                href={data.activationUrl}
+                target="_blank"
+                rel="noopener noreferrer"
+                className="mt-3 block text-sm text-surface/80 hover:text-surface transition-colors underline underline-offset-4 decoration-surface/20 hover:decoration-surface/60"
+              >
+                {t("footer.mip12ActivationSource")} →
+              </a>
+            )}
           </div>
           <div>
             <p className="font-mono text-xs tracking-wider uppercase text-surface/50 mb-3">

src/components/SpecDisclaimer.tsx

@@ -21,7 +21,7 @@ const SPEC_URLS: Record<string, { url: string; mip: string }> = {
     mip: "MIP-8",
   },
   "/mip-12": {
-    url: "https://github.com/monad-crypto/MIPs/blob/main/MIPs/MIP-12.md",
+    url: "https://github.com/monad-crypto/MIPs/blob/2a7e18894f1e55fb043080cb8cef15c7f5647768/MIPs/MIP-12.md",
     mip: "MIP-12",
   },
 };

src/components/mip12/WhyProportionalSection.tsx

@@ -61,20 +61,20 @@ export default function WhyProportionalSection() {
         >
           <div className="grid grid-cols-2 gap-6 sm:gap-10">
             <BlockCadence
-              label="400 ms · 3 blocks"
+              label={t("mip12.why.beforeLabel")}
               count={3}
               color="#9b9084"
               heightPct={100}
             />
             <BlockCadence
-              label="300 ms · 4 blocks"
+              label={t("mip12.why.afterLabel")}
               count={4}
               color="#2a7d6a"
               heightPct={75}
             />
           </div>
           <p className="font-mono text-[10px] text-text-tertiary mt-5 text-center">
-            same 1.2s window · more blocks, each 25% smaller
+            {t("mip12.why.chartNote")}
           </p>
         </motion.div>
 

src/i18n/en.ts

@@ -44,10 +44,10 @@ const en = {
         "One reserved slot expands to ~220 selectors. Monad adds opcode-level features without risking collision with future Ethereum upgrades.",
     },
     mip12: {
-      title: "Decrease Vote Pace",
-      subtitle: "Faster consensus, scaled proportionally",
+      title: "Decrease Block Time",
+      subtitle: "Final · active on Monad mainnet",
       description:
-        "A draft proposal to vote on blocks 25% faster, dropping the pace from 400ms to 300ms, with per-block limits scaled down to match. See what each parameter change actually means.",
+        "MIP-12 is Final and its 400ms to 300ms target vote pace is active on mainnet. See the exact per-block changes and what they mean for capacity and rewards.",
     },
   },
   mip8: {
@@ -727,21 +727,21 @@ const en = {
   },
   mip12: {
     hero: {
-      title: "Faster consensus.",
+      title: "Shorter target cadence.",
       before: "400",
       after: "300",
       unit: "ms",
       caption: "vote pace",
       delta: "−25%",
-      desc: "MIP-12 proposes a 25% shorter vote pace, dropping from 400ms to 300ms. Related per-block parameters scale down to match, so blocks arrive sooner while each one carries a little less.",
+      desc: "MIP-12 is Final. Its target vote pace changed from 400ms to 300ms and activated on Monad mainnet at round 89,758,000 on July 23, 2026 (about 14:30 UTC). Target cadence does not guarantee observed block latency or finality.",
     },
     params: {
       title: "What actually changes",
       subtitle:
-        "Vote pace leads the change (above). Four more parameters scale down with it. Here's what each one means in plain terms.",
+        "The target vote pace and four per-block parameters changed. The cards show the exact before-and-after values.",
       votePaceName: "Vote pace",
       votePaceMeaning:
-        "How often validators vote on a block. Lower means faster confirmations and finality.",
+        "The target interval for consensus votes. It is not a measurement or guarantee of observed block latency or finality.",
       txName: "Transactions per block",
       txMeaning:
         "The most transactions that can be packed into a single block.",
@@ -756,10 +756,14 @@ const en = {
     },
     why: {
       title: "Why turn down every dial?",
-      body: "A block every 300ms instead of every 400ms means about 33% more blocks each second. Since each block now holds 25% fewer transactions, less gas, and fewer bytes, the network's per-second capacity stays roughly the same. You're not getting a bigger pipe, just a faster one. The block reward shrinks for the same reason: smaller, more frequent blocks.",
+      body: "At the nominal target cadence, the 25% lower per-block transaction, gas, and byte limits keep those capacity limits per second unchanged: 12,500 transactions, 500 million gas, and 5 million bytes. The reward falls from 25 to 18 MON per block (28%); at the target cadence, that changes issuance from 62.5 to 60 MON per second, rather than keeping it identical.",
+      beforeLabel: "400 ms · 3 blocks",
+      afterLabel: "300 ms · 4 blocks",
+      chartNote:
+        "same 1.2s target window · per-block transaction, gas, and byte limits fall 25%",
       scopeTitle: "What it touches",
       scopeBody:
-        "This is a consensus-layer change only. The execution layer is unaffected and existing contracts behave exactly as before. Activating it requires a hard fork on the consensus client.",
+        "This consensus-layer change does not alter execution-layer behavior. The 300ms target cadence does not guarantee any specific observed latency or finality.",
     },
   },
   clearSigning: {
@@ -884,7 +888,8 @@ const en = {
     mip7Note:
       "MIP-7 aligns with EIP-8163, which reserves 0xAE on Ethereum L1 for non-L1 extension use. All ~220 selectors are currently unassigned; future MIPs will claim specific slots.",
     mip12Note:
-      "MIP-12 is a draft proposal to reduce the consensus vote pace from 400ms to 300ms, with proportional cuts to per-block limits and reward. It is a consensus-layer change and is not live on mainnet.",
+      "MIP-12 is Final. Its target vote pace changed from 400ms to 300ms and activated on Monad mainnet at round 89,758,000 (July 23, 2026, about 14:30 UTC). Verified against the pinned specification and official release notes on October 4, 2026. Target cadence does not guarantee observed latency or finality.",
+    mip12ActivationSource: "Official activation evidence (release notes)",
   },
   specDisclaimer: {
     prefix: "The information on this page should not be quoted. Please refer to ",

src/i18n/mip12.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it } from "vitest";
+import en from "./en";
+import zh from "./zh";
+
+describe("MIP-12 localized status", () => {
+  it("states Final status and mainnet activation in English and Chinese", () => {
+    expect(en.home.mip12.description).toContain("Final");
+    expect(en.mip12.hero.desc).toContain("round 89,758,000");
+    expect(en.mip12.why.chartNote).toContain("limits fall 25%");
+    expect(en.footer.mip12Note).toContain("activated on Monad mainnet");
+    expect(en.footer.mip12Note).toContain("October 4, 2026");
+    expect(en.footer.mip12ActivationSource).toContain("activation evidence");
+
+    expect(zh.home.mip12.description).toContain("已定稿");
+    expect(zh.mip12.hero.desc).toContain("89,758,000");
+    expect(zh.mip12.why.chartNote).toContain("上限降低 25%");
+    expect(zh.footer.mip12Note).toContain("主网");
+    expect(zh.footer.mip12Note).toContain("2026 年 10 月 4 日");
+    expect(zh.footer.mip12ActivationSource).toContain("官方激活证据");
+  });
+
+  it("removes the stale draft and not-live claims", () => {
+    const copy = [
+      en.home.mip12.description,
+      en.mip12.hero.desc,
+      en.footer.mip12Note,
+      zh.home.mip12.description,
+      zh.mip12.hero.desc,
+      zh.footer.mip12Note,
+    ].join(" ");
+
+    expect(copy).not.toMatch(/draft|not live on mainnet|草案|未在主网上线/i);
+  });
+});