igneum/site/live.html
igneum-labs 344893ee11 Observer: decoupled ingest, lag metric, per-minute by header time, feed self-check, restart loop
After the 4 Oct 2026 stall (no block stored from 11:57 to 13:15 UTC, then 7,022
blocks in two minutes). Notifications only enqueue; a drain loop handles them
in bounded batches. Block flush, colour marking and certificate work each run
on their own timer and never wait on one another. Mergesets come from the
notification's verbose data (bounded cache); getBlock only on a miss, four at
a time. live_state gains observer_lag_s and queue_depth; the API serves them;
the page shows "observer N s behind" past 30 s instead of waiting for the
first block. blocks_per_minute and blocks_60s are bucketed by the block's own
timestamp and reseeded from the table on start, so a catch-up fills past
minutes instead of painting a spike. If no blockAdded arrives for 60 s while
the node's block_count advances, the observer resubscribes; after two failed
attempts it exits 2 and tools/observer/run.sh restarts it.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-10-04 13:26:46 +00:00

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<div class="eyebrow">devnet v0</div>
<h1>Live devnet</h1>
<p>A node is read every two seconds. Every block below is real: its parents, its miner, whether it sits on the selected chain, and whether it is a locked checkpoint. A checkpoint locks when the finality rule's quorum signs it. Proving is not in the devnet yet.</p>
</div>
<div class="strip" aria-live="polite">
<div class="cell status"><div class="k">Status</div><div class="v"><span class="dot"></span><span id="st-status">OFFLINE</span></div><div class="s" id="st-age">no observer update yet</div></div>
<div class="cell"><div class="k">Network</div><div class="v name" id="st-network">igneum-devnet</div><div class="s" id="st-node">node</div></div>
<div class="cell"><div class="k">Blocks / s</div><div class="v" id="st-bps">0.00</div><div class="s">over 60 s</div></div>
<div class="cell"><div class="k">Blue score</div><div class="v" id="st-blue">0</div><div class="s" id="st-count">0 blocks</div></div>
<div class="cell"><div class="k">Difficulty</div><div class="v" id="st-diff">0</div><div class="s">target per block</div></div>
<div class="cell"><div class="k">Hash rate</div><div class="v" id="st-hps">0</div><div class="s">network estimate</div></div>
<div class="cell"><div class="k">Identities</div><div class="v" id="st-miners">0</div><div class="s">vote keys active in 10 min, a card runs several</div></div>
<div class="cell"><div class="k">Peers</div><div class="v" id="st-peers">0</div><div class="s" id="st-mempool">mempool 0</div></div>
</div>
<div class="card" aria-label="Block DAG, live">
<div class="viz-head">
<div class="eyebrow"><span class="dot" style="margin-right:8px"></span>block dag</div>
<div class="viz-stats mono"><span>on screen <b id="c-screen">0</b></span><span>chain <b id="c-chain">0</b></span><span>side <b id="c-side">0</b></span><span>newest blue <b id="c-newest">0</b></span><span>locked <b id="c-locked">none</b></span></div>
</div>
<canvas id="dag" aria-hidden="true"></canvas>
<div class="legend">
<span><i class="sw" style="background:var(--ember);border:1.5px solid #5CB8FF"></i>chain block</span>
<span><i class="sw" style="background:rgba(92,184,255,.7);border:1.5px solid #5CB8FF"></i>included (blue): paid</span>
<span><i class="sw" style="border:1.5px solid var(--ash)"></i>pending</span>
<span><i class="sw" style="border:1.5px solid rgba(154,154,158,.6);background:linear-gradient(45deg,transparent 44%,var(--ash) 44%,var(--ash) 56%,transparent 56%) center/8px 8px no-repeat"></i>excluded (red)</span>
<span><i class="sw" style="border:2px solid var(--molten);border-radius:50%;background:transparent"></i>locked checkpoint, final</span>
<span><i class="sw" style="border:2px solid var(--molten);box-shadow:0 0 8px rgba(255,179,92,.7)"></i>just arrived</span>
<span><i class="sw" style="width:22px;height:0;border-top:2px solid var(--ember)"></i>selected chain</span>
<span><i class="sw" style="width:22px;height:0;border-top:1px solid var(--ash)"></i>first parent</span>
<span><span class="mono" style="color:#5CB8FF">5d3fd79c</span>one lane per miner, colour from its id</span>
<span style="color:var(--ash)">hover or tap a block for its id, scores and parents</span>
</div>
</div>
<div class="two">
<div class="card">
<div class="viz-head"><h2>Miners</h2><div class="eyebrow">last 10 min</div></div>
<div class="tbl">
<table>
<thead><tr><th>Miner</th><th class="n">Blocks</th><th>Share</th><th>Last seen</th><th>Engine</th></tr></thead>
<tbody id="miners"><tr><td colspan="5" class="empty">No blocks in the last 10 minutes.</td></tr></tbody>
</table>
</div>
<p class="note">The short id is the first 8 hex characters of the vote key hash in each header. The engine is what the miner writes into the coinbase; the devnet miner writes nothing yet.</p>
</div>
<div class="card">
<div class="viz-head"><h2>Events</h2><div class="eyebrow">newest first</div></div>
<div class="feed" id="events"><div class="empty">No events yet.</div></div>
</div>
</div>
<div class="card" style="margin-top:var(--gap)">
<div class="viz-head"><h2>Blocks per minute</h2><div class="eyebrow" id="spark-range">last hour</div></div>
<canvas id="spark" aria-hidden="true"></canvas>
<p class="note" id="spark-note">Counted by the observer as blocks arrive.</p>
</div>
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<p>Mined by GPUs. Proven by fire.</p>
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<span>© 2026 Igneum. Nothing on this page is an offer to sell anything.</span>
<span class="mono">igneum.network</span>
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<script>
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// ---------- DAG scene ----------
// One canvas, one requestAnimationFrame loop. Lanes: one per miner in the visible window, most blocks on top,
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var c=$('dag'),x=c.getContext('2d'),W=0,H=0,S=22,G=78,narrow=false,level=0,maxLanes=8;
var blocks=[],byHash={},miners={},lanes=[],laneN=1,othersN=0;
var LV=[{S:22,s:14,pps:40,npps:14},{S:16,s:12,pps:26,npps:10},{S:12,s:10,pps:18,npps:8}];
var pxPerSec=40,targetPx=40,bps=0,live=false,serverNow=0,serverAt=0,frozenAt=null,note='';
var running=false,needSize=true,inView=true,ptrX=-1,ptrY=-1,ptrTouch=false,pin=null,laneLast=[],laneRun=[],lagNote='';
var TOP=20,BOT=12;
// 12 hues that sit beside ember on obsidian; the index comes from the short id, so a miner keeps its colour across reloads
var PAL=['#5CB8FF','#3FD39A','#F5C542','#C49BFF','#FF7AA8','#8FD15F','#FFB08A','#6F8CFF','#D9E25A','#FF8FD6','#4FD8D8','#E0A96D'];
function colour(id){var v=0;for(var i=0;i<id.length;i++)v=(v*33+id.charCodeAt(i))>>>0;return PAL[v%PAL.length];}
function jitter(h){var v=0;for(var i=0;i<8;i++)v=(v*31+h.charCodeAt(i))%1000;return v/1000-0.5;}
function vnow(){if(frozenAt!==null)return frozenAt;return serverNow+(performance.now()-serverAt);}
function laneY(l){var u=H-TOP-BOT,p=u/Math.max(1,laneN);return TOP+(l+0.5)*p;}
function size(){
needSize=false;W=c.clientWidth;H=c.clientHeight;if(!W||!H)return;
c.width=Math.round(W*dpr);c.height=Math.round(H*dpr);x.setTransform(dpr,0,0,dpr,0,0);
narrow=W<560;G=narrow?36:80;applyLevel();
}
function applyLevel(){
var L=LV[level];S=narrow?L.s:L.S;targetPx=narrow?L.npps:L.pps;
maxLanes=Math.max(2,Math.min(14,Math.floor((H-TOP-BOT)/(S*1.7))));
layoutLanes();
}
function pickLevel(){
// projected blocks on screen at the base scale drives the step, with hysteresis so it never flickers
var proj=bps*(W-G)/(narrow?LV[0].npps:LV[0].pps),up=[48,110],down=[36,85],next=level;
if(level<2&&proj>up[level])next=level+1;else if(level>0&&proj<down[level-1])next=level-1;
if(next!==level){level=next;applyLevel();}
}
function layoutLanes(){
// rank miners by blocks in the window; one lane each, the overflow shares the last lane with a count
var ids=Object.keys(miners);
ids.sort(function(a,b){return miners[b].n-miners[a].n||(a<b?-1:1);});
laneN=Math.max(1,Math.min(maxLanes,ids.length));
othersN=ids.length>laneN?ids.length-(laneN-1):0;
lanes=[];
ids.forEach(function(id,i){var m=miners[id],l=othersN&&i>=laneN-1?laneN-1:i;m.lane=l;if(m.y===undefined)m.y=laneY(l);if(!othersN||l<laneN-1)lanes[l]=m;});
while(laneLast.length<laneN){laneLast.push(0);laneRun.push(0);}
}
function ingest(d){
var now=performance.now();serverNow=new Date(d.now).getTime();serverAt=now;
d.blocks.forEach(function(b){var e=byHash[b.hash];
if(e){e.chain=b.chain;e.locked=!!b.locked;e.final=!!b.final;e.color=b.color||'pending';return;}
e={hash:b.hash,ts:b.ts,blue_score:b.blue_score,daa:b.daa,parents:b.parents||[],chain:b.chain,color:b.color||'pending',miner:b.miner||'?',born:now,j:jitter(b.hash),locked:!!b.locked,final:!!b.final,px:0,py:0,on:false};
byHash[b.hash]=e;blocks.push(e);});
var cut=vnow()-((W-G)/Math.max(8,pxPerSec))*1000-20000;
blocks=blocks.filter(function(b){var keep=b.ts>cut;if(!keep)delete byHash[b.hash];return keep;});
blocks.sort(function(a,b){return a.ts-b.ts;});
for(var id in miners)miners[id].n=0;
blocks.forEach(function(b){var m=miners[b.miner];if(!m){m=miners[b.miner]={id:b.miner,n:0,col:colour(b.miner),tag:b.miner.slice(0,3),lane:0};}m.n++;});
for(id in miners)if(!miners[id].n)delete miners[id];
bps=d.state.blocks_per_second_60s||0;
pickLevel();layoutLanes();
var vis=vnow()-((W-G)/Math.max(8,targetPx))*1000,on=0,chain=0;
blocks.forEach(function(b){if(b.ts>vis){on++;if(b.chain)chain++;}});
$('c-screen').textContent=on;$('c-chain').textContent=chain;$('c-side').textContent=on-chain;
$('c-newest').textContent=blocks.length?compact(blocks[blocks.length-1].blue_score):'0';
var f=d.finality;$('c-locked').textContent=f&&f.latest_locked_index?('#'+f.latest_locked_index+' at blue '+compact(f.latest_locked_blue_score)):(f&&f.supported?'none yet':'n/a');
if(!running&&!document.hidden)kick();
}
function rrect(px,py,w,h,r){x.beginPath();x.moveTo(px+r,py);x.lineTo(px+w-r,py);x.quadraticCurveTo(px+w,py,px+w,py+r);x.lineTo(px+w,py+h-r);x.quadraticCurveTo(px+w,py+h,px+w-r,py+h);x.lineTo(px+r,py+h);x.quadraticCurveTo(px,py+h,px,py+h-r);x.lineTo(px,py+r);x.quadraticCurveTo(px,py,px+r,py);x.closePath();}
// a cubic with horizontal tangents; the control offset is clamped so a link across many lanes reads as a gentle S, never a loop
function link(a,b){var d=Math.max(S*0.6,Math.min(48,Math.abs(b.px-a.px)*0.5));x.moveTo(a.px,a.py);x.bezierCurveTo(a.px+d,a.py,b.px-d,b.py,b.px,b.py);}
function hit(){
var best=null,bd=S*0.9,qx=ptrX,qy=ptrY;
if(pin){var p=byHash[pin];return p&&p.on?p:null;}
if(qx<0)return null;
for(var i=0;i<blocks.length;i++){var b=blocks[i];if(!b.on)continue;var dx=Math.abs(b.px-qx),dy=Math.abs(b.py-qy);if(dx<bd&&dy<bd&&dx+dy<bd*1.5){best=b;bd=Math.max(dx,dy);}}
return best;
}
function draw(now){
if(needSize)size();if(!W||!H)return;
pxPerSec+=(targetPx-pxPerSec)*0.06;
var t=vnow(),xr=W-S,i,b,m,n=blocks.length,id;
for(id in miners){m=miners[id];var ty=laneY(m.lane);m.y+=(ty-m.y)*0.12;if(Math.abs(ty-m.y)<0.05)m.y=ty;}
for(i=0;i<laneN;i++){laneLast[i]=-1e9;laneRun[i]=0;}
// positions: time on x, lane on y; same-lane neighbours closer than a block are nudged up and down in a fixed sequence
for(i=0;i<n;i++){b=blocks[i];m=miners[b.miner];if(!m)continue;var l=m.lane;b.px=Math.min(xr,xr-(t-b.ts)*pxPerSec/1000);
if(b.px-laneLast[l]<S*1.25)laneRun[l]++;else laneRun[l]=0;laneLast[l]=b.px;
var k=laneRun[l]%3,dy=k===0?0:(k===1?1:-1)*S*0.62;b.py=m.y+dy;b.on=b.px>G-S;}
x.clearRect(0,0,W,H);
// final region: everything left of the newest locked checkpoint
var lk=null,fx=-1;
for(i=0;i<n;i++){b=blocks[i];if(b.locked&&(!lk||b.ts>lk.ts))lk=b;if(b.final&&b.px>fx)fx=b.px;}
if(lk)fx=lk.px;
if(fx>G){x.fillStyle='rgba(242,84,27,0.06)';x.fillRect(G,0,fx-G,H);x.strokeStyle='rgba(255,179,92,0.55)';x.lineWidth=1;x.setLineDash([4,5]);x.beginPath();x.moveTo(fx,4);x.lineTo(fx,H-4);x.stroke();x.setLineDash([]);}
// lane rails
x.strokeStyle='rgba(42,42,48,0.75)';x.lineWidth=1;x.beginPath();for(i=0;i<laneN;i++){var y=Math.round(laneY(i))+0.5;x.moveTo(G,y);x.lineTo(W,y);}x.stroke();
x.save();x.beginPath();x.rect(G,0,W-G,H);x.clip();
// side links: each side block to its first parent on screen, faint and short
x.strokeStyle='rgba(154,154,158,0.3)';x.lineWidth=1;x.beginPath();
for(i=0;i<n;i++){b=blocks[i];if(b.chain||!b.on)continue;var q=byHash[b.parents[0]];if(q&&q.px>G-S*2)link(q,b);}
x.stroke();
// the selected chain as one path through the chain blocks
x.strokeStyle=level?'rgba(242,84,27,0.6)':'rgba(242,84,27,0.85)';x.lineWidth=narrow||level?1.5:2;x.beginPath();var prev=null;
for(i=0;i<n;i++){b=blocks[i];if(!b.chain)continue;if(prev&&b.px>G-S*2)link(prev,b);prev=b;}
x.stroke();
// hovered block: all of its parent edges, bright
var hv=hit();
if(hv){x.strokeStyle='rgba(255,179,92,0.9)';x.lineWidth=1.5;x.beginPath();for(i=0;i<hv.parents.length;i++){var pq=byHash[hv.parents[i]];if(pq)link(pq,hv);}x.stroke();}
// blocks
var h=S/2,r=S*0.24,tip=null;
for(i=0;i<n;i++){b=blocks[i];if(!b.on)continue;m=miners[b.miner];var age=now-b.born,fl=age<900?1-age/900:0;
if(fl>0){var g=x.createRadialGradient(b.px,b.py,0,b.px,b.py,S*1.6);g.addColorStop(0,'rgba(255,179,92,'+(0.5*fl)+')');g.addColorStop(1,'rgba(255,179,92,0)');x.fillStyle=g;x.beginPath();x.arc(b.px,b.py,S*1.6,0,Math.PI*2);x.fill();}
if(b.chain){x.fillStyle='#F2541B';rrect(b.px-h,b.py-h,S,S,r);x.fill();x.strokeStyle=m?m.col:'#9A9A9E';x.lineWidth=1.5;rrect(b.px-h-1,b.py-h-1,S+2,S+2,r+1);x.stroke();tip=b;}
else if(b.color==='blue'){var mc=m?m.col:'#9A9A9E';x.fillStyle=mc+'B3';rrect(b.px-h,b.py-h,S,S,r);x.fill();x.strokeStyle=fl>0?'rgba(255,179,92,0.95)':mc;x.lineWidth=1.5;rrect(b.px-h,b.py-h,S,S,r);x.stroke();}
else{x.fillStyle='#0C0C0E';rrect(b.px-h,b.py-h,S,S,r);x.fill();x.strokeStyle=fl>0?'rgba(255,179,92,0.95)':(b.color==='red'?'rgba(154,154,158,0.6)':'rgba(154,154,158,0.85)');x.lineWidth=1.5;rrect(b.px-h,b.py-h,S,S,r);x.stroke();
if(b.color==='red'){x.strokeStyle='rgba(154,154,158,0.9)';x.lineWidth=1.5;x.beginPath();x.moveTo(b.px-h*0.5,b.py+h*0.5);x.lineTo(b.px+h*0.5,b.py-h*0.5);x.stroke();}}
if(fl>0&&b.chain){x.strokeStyle='rgba(255,179,92,'+fl+')';x.lineWidth=2;rrect(b.px-h-3,b.py-h-3,S+6,S+6,r+2);x.stroke();}
if(b.locked){x.strokeStyle='#FFB35C';x.lineWidth=2.5;x.beginPath();x.arc(b.px,b.py,S*0.95,0,Math.PI*2);x.stroke();}
if(hv===b){x.strokeStyle='#F4F1EC';x.lineWidth=1.5;rrect(b.px-h-3,b.py-h-3,S+6,S+6,r+2);x.stroke();}}
x.font='500 10px IBM Plex Mono, monospace';
// the chain tip carries its short id; nothing else is labelled unless hovered, pinned or locked
if(tip){var lt=tip.hash.slice(0,8),lw=x.measureText(lt).width,lh=11,pad=3;
// candidate label boxes around the tip: above-right, above-left, below-right, below-left, left, right; the first that
// stays inside the canvas and overlaps no other on-screen block wins, so the id is never drawn over a neighbour
var cands=[[tip.px+h+2-lw,tip.py-h-6-lh],[tip.px-h-2-lw,tip.py-h-6-lh],[tip.px+h+2-lw,tip.py+h+4],[tip.px-h-2-lw,tip.py+h+4],[tip.px-h-6-lw,tip.py-lh/2],[tip.px+h+6,tip.py-lh/2]];
var pick=null,ci;for(ci=0;ci<cands.length&&!pick;ci++){var cx=cands[ci][0],cy=cands[ci][1];if(cx<G+2||cx+lw>W-2||cy<2||cy+lh>H-2)continue;var clash=false;
for(var bi=0;bi<n&&!clash;bi++){var ob=blocks[bi];if(ob===tip||!ob.on)continue;if(cx-pad<ob.px+h&&cx+lw+pad>ob.px-h&&cy-pad<ob.py+h&&cy+lh+pad>ob.py-h)clash=true;}
if(!clash)pick=cands[ci];}
if(!pick)pick=cands[0];x.fillStyle='rgba(244,241,236,0.92)';x.textAlign='left';x.textBaseline='top';x.fillText(lt,Math.max(G+2,Math.min(W-2-lw,pick[0])),Math.max(2,pick[1]));x.textBaseline='alphabetic';}
if(fx>G){var ft=lk?'final #'+lk.hash.slice(0,8):'final',fw=x.measureText(ft).width;x.fillStyle='#FFB35C';
if(fx-G>fw+14){x.textAlign='right';x.fillText(ft,fx-6,12);}else{x.textAlign='left';x.fillText(ft,fx+6,12);}}
// tooltip on the canvas, no DOM
if(hv){var l1=hv.hash.slice(0,8)+' '+(hv.locked?'locked':hv.chain?'chain':hv.color==='blue'?'included, paid':hv.color==='red'?'excluded':'pending'),l2='blue '+compact(hv.blue_score)+' daa '+compact(hv.daa),l3=hv.parents.length+(hv.parents.length===1?' parent':' parents')+' '+hv.miner;
var tw=Math.max(x.measureText(l1).width,x.measureText(l2).width,x.measureText(l3).width)+20,th=52,tx=hv.px+h+10,tty=hv.py-th/2;
if(tx+tw>W-4)tx=hv.px-h-10-tw;if(tx<G+4)tx=G+4;tty=Math.max(4,Math.min(H-th-4,tty));
x.fillStyle='rgba(22,22,26,0.96)';rrect(tx,tty,tw,th,6);x.fill();x.strokeStyle=miners[hv.miner]?miners[hv.miner].col:'#3A3A42';x.lineWidth=1;rrect(tx+0.5,tty+0.5,tw-1,th-1,6);x.stroke();
x.textAlign='left';x.fillStyle='#F4F1EC';x.fillText(l1,tx+10,tty+16);x.fillStyle='#C9C7C2';x.fillText(l2,tx+10,tty+31);x.fillStyle='#9A9A9E';x.fillText(l3,tx+10,tty+46);}
x.restore();
// gutter: lane labels in the miner's colour, over anything that scrolled under it
x.fillStyle='#0C0C0E';x.fillRect(0,0,G,H);x.strokeStyle='rgba(42,42,48,0.9)';x.lineWidth=1;x.beginPath();x.moveTo(G-0.5,0);x.lineTo(G-0.5,H);x.stroke();
x.textAlign='left';x.font='500 '+(narrow?10:11)+'px IBM Plex Mono, monospace';
for(i=0;i<laneN;i++){var ly2=laneY(i)+4,lm=lanes[i];
if(lm){x.fillStyle=lm.col;x.fillText(narrow?lm.tag:lm.id,8,ly2);}
else{x.fillStyle='rgba(154,154,158,0.9)';x.fillText(narrow?'+'+othersN:'+'+othersN+' more',8,ly2);}}
if(lagNote){x.font='500 10px IBM Plex Mono, monospace';x.textAlign='right';x.fillStyle='#FFB35C';x.fillText(lagNote,W-6,12);}
if(!n){x.fillStyle='rgba(154,154,158,0.9)';x.font='500 13px IBM Plex Mono, monospace';x.textAlign='center';x.fillText(lagNote?'no block has reached the observer for '+lagNote.replace('observer ','').replace(' behind',''):(live?'waiting for the first block':'no observer data'),G+(W-G)/2,H/2);}
if(note){x.fillStyle='rgba(12,12,14,0.72)';x.fillRect(0,H/2-22,W,44);x.fillStyle='#F4F1EC';x.font='500 13px IBM Plex Mono, monospace';x.textAlign='center';x.fillText(note,W/2,H/2+5);}
}
function frame(now){if(!running)return;draw(now);requestAnimationFrame(frame);}
function start(){if(running||reduce)return;if(document.hidden||!inView)return;running=true;requestAnimationFrame(frame);}
function stop(){running=false;}
function kick(){if(!running)requestAnimationFrame(function(now){draw(now);});}
document.addEventListener('visibilitychange',function(){if(document.hidden)stop();else start();});
if('IntersectionObserver' in window){new IntersectionObserver(function(es){inView=es[0].isIntersecting;if(inView)start();else stop();},{threshold:0}).observe(c);}
if('ResizeObserver' in window){new ResizeObserver(function(){needSize=true;kick();}).observe(c);}
else window.addEventListener('resize',function(){needSize=true;kick();});
c.addEventListener('pointermove',function(e){if(e.pointerType==='touch')return;ptrX=e.offsetX;ptrY=e.offsetY;pin=null;if(reduce)kick();});
c.addEventListener('pointerleave',function(){ptrX=-1;ptrY=-1;if(reduce)kick();});
c.addEventListener('pointerdown',function(e){if(e.pointerType!=='touch')return;ptrX=e.offsetX;ptrY=e.offsetY;var old=pin;pin=null;var b=hit();pin=b&&b.hash!==old?b.hash:null;ptrX=-1;ptrY=-1;if(reduce)kick();});
start();
// ---------- sparkline ----------
var sc=$('spark'),sx=sc.getContext('2d');
function spark(pairs){var w=sc.clientWidth,h=sc.clientHeight;sc.width=w*dpr;sc.height=h*dpr;sx.setTransform(dpr,0,0,dpr,0,0);sx.clearRect(0,0,w,h);
if(!pairs||!pairs.length){sx.fillStyle='rgba(154,154,158,0.9)';sx.font='500 12px IBM Plex Mono, monospace';sx.textAlign='center';sx.fillText('no data yet',w/2,h/2);return;}
var vals=pairs.map(function(p){return p[1];}),max=Math.max(1,Math.max.apply(null,vals)),pad=10,n=vals.length;
function px(i){return pad+i*(w-2*pad)/Math.max(1,n-1);}function py(v){return h-pad-(v/max)*(h-2*pad-12);}
sx.strokeStyle='rgba(42,42,48,0.9)';sx.lineWidth=1;sx.beginPath();sx.moveTo(pad,py(0));sx.lineTo(w-pad,py(0));sx.stroke();
sx.beginPath();sx.moveTo(px(0),py(0));vals.forEach(function(v,i){sx.lineTo(px(i),py(v));});sx.lineTo(px(n-1),py(0));sx.closePath();sx.fillStyle='rgba(242,84,27,0.14)';sx.fill();
sx.beginPath();vals.forEach(function(v,i){i?sx.lineTo(px(i),py(v)):sx.moveTo(px(i),py(v));});sx.strokeStyle='#F2541B';sx.lineWidth=2;sx.lineJoin='round';sx.stroke();
var li=n-1;sx.fillStyle='#FFB35C';sx.beginPath();sx.arc(px(li),py(vals[li]),3,0,Math.PI*2);sx.fill();
sx.fillStyle='rgba(154,154,158,0.9)';sx.font='500 10px IBM Plex Mono, monospace';sx.textAlign='left';sx.fillText('max '+max+' / min',pad,12);sx.textAlign='right';sx.fillText('now',w-pad,12);
var total=vals.reduce(function(a,b){return a+b;},0);$('spark-note').textContent=total+' blocks in the last hour, '+(total/60).toFixed(1)+' per minute on average.';}
// ---------- polling ----------
var minersEl=$('miners'),eventsEl=$('events'),failures=0;
function setStatus(on,ageText){document.body.className=on?'on':'off';$('st-status').textContent=on?'LIVE':'OFFLINE';$('st-age').textContent=ageText;}
function render(d){
var s=d.state,on=!s.stale;
var lag=s.observer_lag_s;lagNote=on&&lag!==null&&lag>30?'observer '+(lag<120?Math.round(lag)+' s':Math.round(lag/60)+' min')+' behind':'';
setStatus(on,s.age_s===null?'no observer update yet':(lagNote?lagNote+(s.queue_depth?', '+s.queue_depth+' queued':''):'observer updated '+rel(s.age_s*1000)));
$('st-network').textContent=s.network||'igneum-devnet';$('st-node').textContent=s.node_version?'node '+s.node_version:'node';
$('st-bps').textContent=(s.blocks_per_second_60s||0).toFixed(2);
$('st-blue').textContent=compact(s.blue_score);$('st-count').textContent=compact(s.block_count)+' blocks';
$('st-diff').textContent=compact(s.difficulty);$('st-hps').textContent=hashrate(s.hashes_per_second_estimate);
$('st-miners').textContent=s.miners_10m;$('st-peers').textContent=s.peers===null?'0':s.peers;$('st-mempool').textContent='mempool '+(s.mempool||0);
var now=new Date(d.now).getTime();
if(d.miners.length){minersEl.innerHTML=d.miners.map(function(m){return '<tr><td><span class="id">'+esc(m.id)+'</span></td><td class="n">'+m.blocks+'</td><td><div style="display:flex;align-items:center;gap:8px"><div class="bar" style="width:70px"><i style="width:'+m.share+'%"></i></div><span class="mono" style="font-size:12px">'+m.share+'%</span></div></td><td>'+rel(now-new Date(m.last_seen).getTime())+'</td><td>'+(m.engine?esc(m.engine):'<span style="color:var(--ash)">not reported</span>')+'</td></tr>';}).join('');}
else minersEl.innerHTML='<tr><td colspan="5" class="empty">No blocks in the last 10 minutes.</td></tr>';
if(d.events.length){eventsEl.innerHTML=d.events.map(function(e){return '<div><span><span class="k">'+esc(e.kind)+'</span> '+esc(e.text)+'</span><span class="t">'+rel(now-new Date(e.ts).getTime())+'</span></div>';}).join('');}
else eventsEl.innerHTML='<div class="empty">No events yet.</div>';
spark(s.blocks_per_minute);
live=on;
if(on){frozenAt=null;note='';ingest(d);}
else{if(frozenAt===null)frozenAt=vnow()||now;note='observer offline, last update '+(s.age_s===null?'unknown':rel(s.age_s*1000));}
}
function poll(){fetch('/api/live',{cache:'no-store'}).then(function(r){if(!r.ok)throw new Error(r.status);return r.json();}).then(function(d){if(!d.ok)throw new Error(d.error);failures=0;render(d);}).catch(function(){failures++;if(failures>=3){setStatus(false,'api unreachable');if(frozenAt===null)frozenAt=vnow();note='api unreachable, scene frozen';}});}
poll();setInterval(poll,2000);
})();
</script>
</body>
</html>