BlockchainSpider — on-chain data collection toolkit

Reference skill. This repository does not vendor BlockchainSpider; read the upstream README and docs for install, spiders, and options.

• Repository: github.com/wuzhy1ng/BlockchainSpider (MIT license)
• Stack: Python, Scrapy spiders, CSV/JSON outputs under ./data by default (paths per project config).

What it is for

Typical capabilities described in the project (confirm against current docs):

Area	Examples
Transfer subgraph	Money-flow graph centered on a source address or transaction (e.g. txs.blockscan-style crawls).
EVM transactions	Block ranges, latest listener, receipts, logs, token transfers; multiple EVM-compatible providers.
Solana	Slot ranges or live streams via JSON-RPC providers.
Labels	Optional plugins (e.g. label-oriented crawls)—scope and ethics depend on source and law.

Academic background appears in project references (e.g. TRacer / transaction semantics papers—see repo Reference section).

Prerequisites

• Python environment and pip install -r requirements.txt from the cloned repo.
• RPC / indexer API endpoints you are authorized to use (respect ToS, rate limits, and billing).
• API keys for third-party explorers (Etherscan-class APIs, etc.) must be supplied by you—never commit keys or paste live keys into chats.

Example command shapes (placeholders only)

Upstream examples use scrapy crawl <spider> -a .... Illustrative patterns (replace placeholders):

# EVM transfer / subgraph style (example spider name from upstream docs)
scrapy crawl txs.blockscan -a source=<ADDRESS> -a apikeys=<YOUR_ETHERSCAN_API_KEY> -a endpoint=<ETHERSCAN_COMPATIBLE_API_URL>

# EVM blocks / transactions over a range
scrapy crawl trans.block.evm -a start_blk=<N> -a end_blk=<M> -a providers=<YOUR_ETH_HTTP_RPC_URL>

# Solana slot range
scrapy crawl trans.block.solana -a start_slot=<S1> -a end_slot=<S2> -a providers=<YOUR_SOLANA_JSON_RPC_URL>

Exact spider names and arguments change with releases—always copy from the current README.

How to combine with blockint

Task	Skill
High-level analytics / AML context	blockchain-analytics-operations
Solana forensic tracing methodology	solana-tracing-specialist
Multi-chain clustering	cross-chain-clustering-techniques-agent
Web surface crawling (HTTP), not chain RPC	katana-web-crawling

Guardrails

• Lawful use only — comply with sanctions, privacy, and computer misuse rules in your jurisdiction; do not use spiders to harass or dox.
• Darknet / sensitive label sources — some demo commands in upstream docs point to Tor or sensitive data sources; obtain legal and security approval before running.
• Do not store or share API keys, customer identifiers, or non-public investigation exports in public repos.
• Outputs are raw or heuristic—validate critical facts against primary chain data.

Related research codebase

• mots-transaction-semantics — MoTS (WWW 2023 “Know Your Transactions”); upstream notes MoTS merged into BlockchainSpider—use MoTS skill for legacy spider names (blocks.eth, blocks.semantic.eth, labels.action) and the bundled PDF.

Goal: a stable pointer and safe usage framing for BlockchainSpider inside blockint workflows.