pancakeswap_v2

PancakeSwap V2 PairCreated and Sync events on BSC mainnet.

Overview

This Substreams package indexes PancakeSwap V2 on BNB Smart Chain (BSC) from factory deployment (block 586,851):

• PairCreated — every new pool from the official factory (0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73)
• Sync — reserve updates on all PancakeSwap V2 factory pairs (full historical backfill)

store_pairs builds the set of factory pair addresses as PairCreated events are processed; Sync logs are decoded for any address in that set. Other V2 forks on BSC are excluded.

Block-level filtering via ethereum-common skips blocks with no factory or Sync activity.

Modules

Module	Kind	Output	Description
map_pair_created	map	pancakeswap.v2.PairCreatedEvents	PairCreated from the factory
store_pairs	store	—	Pair addresses seen since block 586,851
map_v2_events	map	pancakeswap.v2.V2Events	PairCreated + Sync for all factory pairs

Prerequisites

• Substreams CLI
• buf (used by substreams build for packaging)
• Rust with wasm32-unknown-unknown target (rustup target add wasm32-unknown-unknown)
• BSC endpoint auth — run substreams auth or set SUBSTREAMS_API_KEY

Quick Start

substreams build

# Test around factory deployment
substreams run substreams.yaml map_v2_events \
  -e bnb.streamingfast.io:443 \
  -s 586851 -t +1000 \
  -o jsonl

# Full backfill (use production mode + disable block limit for large ranges)
substreams run substreams.yaml map_v2_events \
  -e bnb.streamingfast.io:443 \
  -s 586851 -t 0 \
  --limit-processed-blocks 0 \
  --production-mode \
  -o jsonl

Factory address

Contract	BSC mainnet
PancakeSwap V2 Factory	0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73