This discussion introduces the Polkadot Multi-Chain Explorer — an open-source indexing and analytics platform designed to unify data across the entire Polkadot ecosystem.

Current explorers provide isolated, single-chain views. Our goal is to build the first fully multi-chain explorer with real-time indexing, unified data models, cross-chain visibility, and advanced analytics.

Below is the official roadmap structured by milestones, as published in the GitHub repository.

PHASE 1 — CORE ARCHITECTURE & RESEARCH
Deadline: February 28, 2026

Objectives:
• Analyze parachain APIs and data structures
• Design unified multi-chain indexing architecture
• Define universal data models (blocks, extrinsics, events, accounts, XCM)
• Research optimal sync strategies (full/fast/incremental)
• Prepare scalable PostgreSQL schema

Deliverables:
• Architecture specification
• Database schema v1
• Unified data model documentation
• Prototype of core indexing engine

PHASE 2 — MVP MULTI-CHAIN EXPLORER
Deadline: April 30, 2026

Objectives:
• Index Relay Chain + 3 parachains
• Implement ingestion pipeline for blocks/extrinsics/events
• Build REST API v1 (blocks, accounts, transactions, events)
• Implement simple frontend (blocks, extrinsics, events, accounts, search)

Deliverables:
• MVP indexer
• REST API v1
• Minimal explorer UI
• Deployment documentation

PHASE 3 — FULL MULTI-CHAIN SUPPORT & ADVANCED UX
Deadline: July 31, 2026

Objectives:
• Index all major parachains
• Implement XCM tracing and cross-chain activity
• Human-readable transaction interpretation
• Add analytics (metrics, account analytics, visualizations)
• Advanced UI dashboards with filtering and search

Deliverables:
• Full multi-chain indexer
• Real-time cross-chain insights
• Advanced production-ready UI

Full GitHub repository:
https://github.com/acab0000/polkadot-explorer

Roadmap (source file):
https://github.com/acab0000/polkadot-explorer/blob/main/ROADMAP.md

We are preparing to submit a Treasury Proposal and welcome feedback regarding scope, milestones, prioritization, and budgeting.