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README.md

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----
-license: cc-by-nc-4.0
----
+---
+license: cc-by-nc-4.0
+tags:
+- ethereum
+- evm
+- blockchain
+- cryptocurrency
+- crypto
+- onchain-data
+- tabular
+- timeseries
+- datasets
+- pandas
+- polars
+- duckdb
+pretty_name: BlockDB Liquidity Pools - Sample
+size_categories:
+- 10M<n<100M
+---
+
+## Sample Notice
+
+This dataset contains **a small sample** of the full BlockDB Liquidity Pools dataset.  
+It is provided **for evaluation, research, and interoperability testing only**.
+
+If you need full historical coverage, real-time streaming, or end-of-day (EOD) exports
+please contact us directly:
+
+📧 **support@blockdb.io**  
+🌐 https://www.blockdb.io  
+
+
+## Dataset Overview
+Canonical list of liquidity pools across all supported DEXes. Each row represents a unique pool with its configuration (exchange, type, tokens, factory) and identifiers (contract address for v2/v3-style pools, pool_id for v4-style pools).
+
+This table serves as the single source of truth for pool identity; child time-series tables (reserves, swaps, yields) reference pools by their pool_uid.
+
+
+## Chains and Coverage
+ETH, BSC, Base, Arbitrum, Unichain, Avalanche, Polygon, Celo, Linea, Optimism (others on request).
+Full history from chain genesis; reorg-aware real-time ingestion and updates.
+
+
+## Schema
+List of columns exactly as delivered:
+
+	•	pool_uid BYTEA – Unique pool identifier derived from address or pool_id (primary key)
+	•	exchange_id INTEGER – Exchange/DEX identifier
+	•	type_id INTEGER – Pool type identifier (FK to liquidity_pool_types)
+	•	block_number BIGINT – Block of the log attributed as the genesis/recognition point
+	•	block_time TIMESTAMPTZ – UTC timestamp when the block was mined
+	•	tx_index INTEGER – Transaction index within the block
+	•	log_index INTEGER – Log index within the block
+	•	factory BYTEA – 20-byte DEX factory/pool-manager address
+	•	tokens BYTEA[] – Array of 20-byte token addresses in the pool
+	•	contract_address BYTEA – 20-byte address for v2/v3-style pools (nullable for id-only v4)
+	•	pool_id BYTEA – 32-byte identifier for v4-style pools (nullable for v2/v3)
+	•	pairnum NUMERIC(6) – Pair number, if applicable
+	•	asset_managers BYTEA[] – Array of asset manager addresses, if applicable
+	•	amp NUMERIC(6) – Amplification parameter for stable pools
+	•	weights NUMERIC(6,5)[] – Token weights (0..1) for weighted pools
+	•	tick_spacing SMALLINT – Tick spacing for concentrated liquidity pools
+	•	_tracing_id BYTEA – Tracing ID of this pool record
+	•	_genesis_tracing_ids BYTEA[] – Tracing IDs of the genesis records leading to this pool record
+	•	_parent_tracing_ids BYTEA[] – Tracing IDs of the parent records leading to this pool record
+	•	_created_at TIMESTAMPTZ – Record creation timestamp
+	•	_updated_at TIMESTAMPTZ – Record last update timestamp
+
+
+### Notes
+	•	At least one of contract_address or pool_id is always populated.
+	•	Indexes on block_number, factory, type_id, (factory, type_id), and tokens (GIN) support fast lookups.
+	•	Binary values can be rendered as hex via encode(column, 'hex') in SQL for display or downstream joins.
+
+
+## Lineage
+Each pool record includes deterministic _tracing_id, _genesis_tracing_ids, and _parent_tracing_ids, providing:
+
+	•	Provenance tracking from raw logs to pool discovery
+	•	Reproducible analytics and signal extraction
+	•	Cross-system consistency checks (RPC vs. indexers vs. internal warehouses)
+
+
+## Common Use Cases
+	•	Building DEX pool registries across multiple protocols
+	•	Pool discovery and new listing detection
+	•	Foundation for swap, reserves, and yield analytics
+	•	Cross-DEX liquidity analysis and comparison
+
+
+## Quality
+	•	Verifiable lineage: deterministic cryptographic hashes per row
+	•	Reorg-aware ingestion: continuity and consistency across forks
+	•	Complete historical coverage: from chain genesis to present

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