30:[{"id":"c9dcf0391be47af680224ffb7054ed943461f27920ebb4a874b9770300c0e7839b0b555054e392ce3e2c4697c83b83afc12bb8c3cdb003c33be45b6b6e73e402","href":"https://static.observableusercontent.com/files/c9dcf0391be47af680224ffb7054ed943461f27920ebb4a874b9770300c0e7839b0b555054e392ce3e2c4697c83b83afc12bb8c3cdb003c33be45b6b6e73e402","name":"zen-chain-logs-21-12-2020","type":"application/octet-stream","lastModified":1608986038918.626,"size":8056238}] 2e:{"title":"Zen Protocol hash rate over time","cells":[{"id":0,"value":"md`# Zen Protocol hash rate over time`","pinned":false,"hidden":false,"mode":"ojs"},{"id":531,"value":"md`Please note that these logs are no longer actively maintain. They are only a snapshot between ${fullLogs[0].date} and ${fullLogs[fullLogs.length - 1].date}. See https://zp.io for updated information about the blockchain.`","pinned":true,"hidden":false,"mode":"ojs"},{"id":371,"value":"{\n if (timebetweenchange.length === 0) {\n return md`### There seems to be no data for the selected range ... oops ;(`\n }\n const dateRangeToString = equals(dateRange, oneDay) ? \"24 hours\" : equals(dateRange, oneWeek) ? \"7 days\" : equals(dateRange, oneMonth) ? \"30 days\" : \"Year\"\n return html`

The mean time between blocks (in minutes) for the past ${dateRangeToString}

\n \n \n \n \n \n \n \n \n \n \n \n

Mean	Min, Max	SD
${mean.toFixed(1)}	${d3.extent(timebetweenchange, d => d.duration).map(d => d.toFixed(1)).join(', ')}	${sd}

\n`\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":275,"value":"viewof dateRange = radio({\n title: 'Date range',\n description: 'Select date range for x-axis',\n options: [\n // { label: '6 Hours', value: 12 * oneHour },\n { label: '1 Day', value: oneDay },\n { label: '2 Days', value: oneDay * 2 },\n { label: '1 Week', value: oneWeek },\n { label: '1 Month', value: oneMonth },\n { label: '1 year', value: 12 * oneMonth },\n {label: '2 years', value: 24 * oneMonth },\n {label: '3 years', value: 36 * oneMonth },\n\n ],\n value: oneMonth * 36\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":424,"value":"html`

Hash rate in GH for the past ${dateRangeToString}

`","pinned":false,"hidden":false,"mode":"ojs"},{"id":5,"value":"hashRateChart = lineChart(difficulties, d => d.hashRate, d => d.date)","pinned":false,"hidden":false,"mode":"ojs"},{"id":433,"value":"html`

Network difficulty for the past ${dateRangeToString}

`","pinned":false,"hidden":false,"mode":"ojs"},{"id":400,"value":"difficulty = lineChart(difficulties, d => d.difficulty, d => d.date)","pinned":false,"hidden":false,"mode":"ojs"},{"id":436,"value":"md`\n## FAQs\n### How was this data generated?\nThe data was generated using a running headless zen-node and a cron job which queries the \\`\\`/blockchain/info\\`\\` endpoint every 4 minutes. The resulting file is pushed to an S3 bucket and published on AWS.\n\n### Where are the raw logs?\nSee here ~~https://s3.us-east-2.amazonaws.com/zp-blockchain-info/zen-chain-logs~~. Please note that there is no guarantee that this will always be here. The AWS infrastructure running this has now been terminated. The files generated are attached to this notebook.\n\n### What is Zen Protocol?\nZen protocol is a new type of blockchain focused on enabling people to secure their assets. See https://www.zenprotocol.com/\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":397,"value":"lineChart = (data, fy, fx) => {\n const x = xscale(data)(fx)\n const y = yscale(data)(fy)\n const xAxis = g => g\n .attr(\"transform\", `translate(0,${height - margin.top})`)\n .call(d3.axisBottom(x).ticks(10))\n const yAxis = g => g\n .attr(\"transform\", `translate(${margin.left},0)`)\n .call(d3.axisLeft(y).tickSizeOuter(10))\n \n const svg = d3.select( DOM.svg(width, height) )\n const line = d3.line()\n .x(d => x(fx(d)))\n .y(d => y(fy(d)))\n \n const g = svg.append(\"g\")\n \n g.append('path')\n .datum(data)\n .attr('fill', 'none')\n .attr('stroke', 'steelblue')\n .attr(\"stroke-linejoin\", \"round\")\n .attr(\"stroke-linecap\", \"round\")\n .attr(\"stroke-width\", 1.5)\n .attr(\"d\", line);\n svg.append(\"g\")\n .call(xAxis);\n \n svg.append(\"g\")\n .call(yAxis);\n \n return svg.node();\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":361,"value":"mean = d3.mean(timebetweenchange, d => d.duration)","pinned":false,"hidden":false,"mode":"ojs"},{"id":391,"value":"equals = (a, b) => {\n return Math.abs(a - b) < Number.EPSILON \n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":365,"value":"sd = d3.deviation(timebetweenchange, d => d.duration)","pinned":false,"hidden":false,"mode":"ojs"},{"id":368,"value":"extent = d3.extent(timebetweenchange, d => d.duration)","pinned":false,"hidden":false,"mode":"ojs"},{"id":527,"value":"logs[logs.length - 1]","pinned":true,"hidden":false,"mode":"ojs"},{"id":328,"value":"oneHour = 60 * 60 * 1000","pinned":false,"hidden":false,"mode":"ojs"},{"id":281,"value":"oneDay = 24 * oneHour","pinned":false,"hidden":false,"mode":"ojs"},{"id":285,"value":"oneMonth = 30 * oneDay","pinned":false,"hidden":false,"mode":"ojs"},{"id":283,"value":"oneWeek = 7 * oneDay\n","pinned":false,"hidden":false,"mode":"ojs"},{"id":427,"value":"dateRangeToString = equals(dateRange, oneDay) ? \"24 hours\" : equals(dateRange, oneWeek) ? \"7 days\" : equals(dateRange, oneMonth) ? \"30 days\" : \"Year\"","pinned":false,"hidden":false,"mode":"ojs"},{"id":27,"value":"height = 400\n","pinned":false,"hidden":false,"mode":"ojs"},{"id":28,"value":"width = 900","pinned":false,"hidden":false,"mode":"ojs"},{"id":14,"value":"format = d3.format(\".0f\")\n","pinned":false,"hidden":false,"mode":"ojs"},{"id":404,"value":" yscale = data => f => d3.scaleLinear()\n .domain([d3.max(data, f), 0])\n .range([margin.bottom, height - margin.top])","pinned":false,"hidden":false,"mode":"ojs"},{"id":406,"value":"xscale = data => x => d3.scaleTime()\n .domain(d3.extent(data.map(x)))\n .range([margin.left, width - margin.left])","pinned":false,"hidden":false,"mode":"ojs"},{"id":22,"value":"margin = ({top: 30, right: 0, bottom: 10, left: 80})","pinned":false,"hidden":false,"mode":"ojs"},{"id":195,"value":"fullLogs = FileAttachment(\"zen-chain-logs-21-12-2020\").text()\n .then(parseLogs)","pinned":false,"hidden":false,"mode":"ojs"},{"id":477,"value":"logs = compressLogs(fullLogs, dateRange);","pinned":false,"hidden":false,"mode":"ojs"},{"id":475,"value":"compressLogs = (logs, dateRange) => {\n dateRange = +dateRange;\n const now = Date.now();\n return logs.filter((log, index) => dateRange <= oneMonth ? now - log.timestamp <= dateRange : index % 100 === 0);\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":263,"value":"difficulties = {\n const set = new Set()\n const now = Date.now()\n return logs\n .filter(log => log.timestamp >= now - +dateRange)\n .reduce((acc, log) => {\n if (set.has(log.timestamp)) {\n return acc\n } else {\n set.add(log.timestamp)\n acc.push(log);\n return acc\n }\n }, [])\n}\n","pinned":false,"hidden":false,"mode":"ojs"},{"id":266,"value":"hashRate = (difficulty) => difficulty / 55","pinned":false,"hidden":false,"mode":"ojs"},{"id":269,"value":"timebetweenchange = {\n const data = fullLogs.reduce((acc, b) => {\n if (acc.length === 0) {\n acc.push({ timestamp: b.timestamp, duration: 0 })\n } else {\n acc.push({timestamp: b.timestamp, duration: (b.timestamp - acc[acc.length - 1].timestamp)/60000}) \n }\n return acc\n }, [])\n const now = Date.now()\n const lastItem = data[data.length - 1]\n data.push({\n timestamp: now,\n duration: (now - lastItem.timestamp)/60000\n })\n return data.filter(d => d.timestamp >= now - +dateRange).slice(1)\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":309,"value":"parseLogs = (s3logs) => s3logs\n.split(\"\\n\")\n.map(line => line.replace(/\"/g, '').split(\",\").map(d => d.trim()))\n.filter(d => d.length > 1) //remove any incomplete lines ...\n.map(([difficulty, timestamp]) => ({\n difficulty: +difficulty,\n hashRate: +difficulty/55,\n date: new Date(+timestamp),\n timestamp: +timestamp\n}))","pinned":false,"hidden":false,"mode":"ojs"},{"id":278,"value":"import {radio} from \"@jashkenas/inputs\"","pinned":false,"hidden":false,"mode":"ojs"},{"id":318,"value":"d3 = require(\"https://d3js.org/d3.v5.min.js\")","pinned":false,"hidden":false,"mode":"ojs"}],"files":"$W30","stdlib":"1","titling":"auto"}