Key Milestones & Bitcoin Halvings

// Bitcoin Halving Analysis and Timeline
class HalvingAnalyzer {
    constructor() {
        this.halvings = [
            {
                block: 0,
                date: new Date('2009-01-03'),
                reward: 50,
                period: "Genesis - First Halving",
                priceBefore: null,
                priceAfter: null,
                significance: "Bitcoin network launch"
            },
            {
                block: 210000,
                date: new Date('2012-11-28'),
                reward: 25,
                period: "First Halving Cycle",
                priceBefore: 12.5,
                priceAfter: 1000,
                significance: "First major price discovery"
            },
            {
                block: 420000,
                date: new Date('2016-07-09'),
                reward: 12.5,
                period: "Second Halving Cycle",
                priceBefore: 650,
                priceAfter: 20000,
                significance: "Mainstream awareness begins"
            },
            {
                block: 630000,
                date: new Date('2020-05-11'),
                reward: 6.25,
                period: "Third Halving Cycle",
                priceBefore: 9000,
                priceAfter: 69000,
                significance: "Institutional adoption phase"
            },
            {
                block: 840000,
                date: new Date('2024-04-19'),
                reward: 3.125,
                period: "Fourth Halving Cycle",
                priceBefore: 70000,
                priceAfter: null, // Future
                significance: "Maturation phase begins"
            }
        ];
    }
    
    analyzeHalvingPatterns() {
        const analysis = {
            cycleLength: [],
            priceMultiples: [],
            minerAdaptation: [],
            networkGrowth: []
        };
        
        for (let i = 1; i < this.halvings.length; i++) {
            const current = this.halvings[i];
            const previous = this.halvings[i-1];
            
            // Calculate cycle length in days
            const cycleDays = (current.date.getTime() - previous.date.getTime()) / (1000 * 60 * 60 * 24);
            analysis.cycleLength.push({
                cycle: i,
                days: Math.round(cycleDays),
                years: Math.round(cycleDays / 365 * 10) / 10
            });
            
            // Calculate price multiples if available
            if (current.priceBefore && previous.priceAfter) {
                const multiple = current.priceAfter / previous.priceAfter;
                analysis.priceMultiples.push({
                    cycle: i,
                    multiple: Math.round(multiple * 10) / 10,
                    period: current.period
                });
            }
        }
        
        return analysis;
    }
    
    predictNextHalving() {
        const lastHalving = this.halvings[this.halvings.length - 1];
        const nextBlock = lastHalving.block + 210000;
        
        // Approximately 10 minutes per block
        const blocksToGo = nextBlock - this.getCurrentBlock();
        const daysToHalving = blocksToGo * 10 / (60 * 24);
        const estimatedDate = new Date(Date.now() + daysToHalving * 24 * 60 * 60 * 1000);
        
        return {
            nextBlock: nextBlock,
            estimatedDate: estimatedDate,
            daysRemaining: Math.round(daysToHalving),
            newReward: 1.5625 // Half of current 3.125
        };
    }
    
    getCurrentBlock() {
        // Simplified - in practice would fetch from API
        const genesis = new Date('2009-01-03');
        const now = new Date();
        const minutesElapsed = (now.getTime() - genesis.getTime()) / (1000 * 60);
        return Math.floor(minutesElapsed / 10); // 10 minutes per block average
    }
    
    generateMilestoneTimeline() {
        return [
            {
                date: '2010-05-22',
                event: 'First Bitcoin Transaction',
                details: 'Laszlo Hanyecz pays 10,000 BTC for two pizzas',
                significance: 'Establishes Bitcoin as medium of exchange'
            },
            {
                date: '2013-04-01',
                event: 'First $100 Price',
                details: 'Bitcoin crosses $100 psychological barrier',
                significance: 'Mainstream financial media attention begins'
            },
            {
                date: '2017-12-17',
                event: '$20,000 Peak',
                details: 'Bitcoin reaches all-time high before major correction',
                significance: 'ICO boom and retail speculation peak'
            },
            {
                date: '2021-02-08',
                event: 'Tesla Bitcoin Purchase',
                details: 'Elon Musk announces $1.5B Bitcoin treasury allocation',
                significance: 'Institutional adoption acceleration'
            },
            {
                date: '2021-09-07',
                event: 'El Salvador Legal Tender',
                details: 'First country to adopt Bitcoin as legal tender',
                significance: 'Sovereign state Bitcoin adoption milestone'
            }
        ];
    }
}

// Usage example
const analyzer = new HalvingAnalyzer();
const patterns = analyzer.analyzeHalvingPatterns();
const nextHalving = analyzer.predictNextHalving();
const milestones = analyzer.generateMilestoneTimeline();

console.log("Halving Analysis:", patterns);
console.log("Next Halving:", nextHalving);