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README.md
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pretty_name: BlockDB Swap Prints - Sample
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size_categories:
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- 10M<n<100M
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---
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It is provided **for evaluation, research, and interoperability testing only**.
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please contact us directly:
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📧 **support@blockdb.io**
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🌐 https://www.blockdb.io
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## Dataset Overview
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Executed swap "prints": realized price from actual swap events. Each row represents a single swap execution with directional token pair (token_in → token_out), amounts, and computed execution price. No liquidity or quote data—only realized trades.
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## Chains and Coverage
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ETH, BSC, Base, Arbitrum, Unichain, Avalanche, Polygon, Celo, Linea, Optimism (others on request).
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Full history from chain genesis; reorg-aware real-time ingestion and updates.
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## Schema
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List of columns exactly as delivered:
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• id BIGINT – Unique swap print identifier (primary key)
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• pool_uid BYTEA – Unique pool identifier (FK to liquidity_pools)
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• exchange_id INTEGER – Exchange/DEX identifier
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• type_id INTEGER – Pool type identifier (FK to liquidity_pool_types)
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• block_number BIGINT – Block when the swap was executed
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• block_time TIMESTAMPTZ – UTC timestamp when the block was mined
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• tx_index INTEGER – Transaction index within the block
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• log_index INTEGER – Log index within the block
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• token_in BYTEA – 20-byte address of input token
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• token_out BYTEA – 20-byte address of output token
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• amount_in NUMERIC(78,0) – Raw input amount (lossless)
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• amount_out NUMERIC(78,0) – Raw output amount (lossless)
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• exec_price NUMERIC(78,18) – Realized execution price (token_out per 1 token_in, decimals-adjusted)
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• exec_price_exact TEXT – Lossless exact price representation
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• _tracing_id BYTEA – Tracing ID of this swap print record
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• _genesis_tracing_ids BYTEA[] – Tracing IDs of the genesis records leading to this record
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• _parent_tracing_ids BYTEA[] – Tracing IDs of the parent records leading to this record
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• _created_at TIMESTAMPTZ – Record creation timestamp
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• _updated_at TIMESTAMPTZ – Record last update timestamp
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### Notes
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• Direction: The "print" is token_in → token_out; exec_price = amount_out / amount_in (decimals-adjusted).
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• Unique constraint: (pool_uid, token_in, token_out, block_number, tx_index, log_index) guarantees one print per swap log per direction.
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• exec_price may be NULL for extreme values; exec_price_exact is always populated.
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• Indexes on (pool_uid, block_number DESC, tx_index DESC, log_index DESC), (block_number, tx_index, log_index), block_time, and (token_in, token_out, block_time DESC) support fast lookups.
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## Lineage
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Each swap print record includes deterministic _tracing_id, _genesis_tracing_ids, and _parent_tracing_ids, providing:
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• Provenance tracking from raw logs to decoded swap events
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• Reproducible analytics and signal extraction
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• Cross-system consistency checks (RPC vs. indexers vs. internal warehouses)
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## Common Use Cases
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• Building trade-level analytics and execution quality metrics
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• TWAP/VWAP calculation from realized trades
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• MEV detection and sandwich attack analysis
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• Arbitrage opportunity identification across pools
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## Quality
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• Verifiable lineage: deterministic cryptographic hashes per row
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• Reorg-aware ingestion: continuity and consistency across forks
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• Complete historical coverage: from chain genesis to present
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pretty_name: BlockDB Swap Prints - Sample
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size_categories:
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- 10M<n<100M
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dataset_info:
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homepage: https://docs.blockdb.io/data-catalog/evm/prices/token-to-token-prices-swap-prints
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---
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*Small evaluation sample.*
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**`0302`** · `blockdb_evm.b0302_token_to_token_prices_swap_prints_v1` - Executed swap prints (realized token_in → token_out price & sizes) per on-chain swap event.
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**🌐 [BlockDB docs — schema, API, WebSocket & signup](https://docs.blockdb.io/data-catalog/evm/prices/token-to-token-prices-swap-prints)**
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