Block Explorer

<p>This is the explorer engagement. The deliverable is the transparency layer that the community will ask for by week two and the exchange listing team will require by month two. An Etherscan-style explorer for a custom chain, or a token-analytics dashboard for a token on an existing chain. Chain indexer, address pages, transaction pages, block pages, contract verification, token holder lists, transfer history, and an API surface for partners.</p> <p>The buyer for this page is a project past launch — or about to be — with a community asking for transparency, an exchange asking for an API, or a partner asking for embeddable widgets. The parent — <a href="/services/blockchain">Blockchain Services</a> — sets the four-artifact perimeter; this page is the explorer specifically.</p> <h2>Indexer architecture</h2> <p>The indexer ingests blocks as they finalize, parses transactions into normalized rows, indexes addresses and contracts, and writes to a database the explorer queries. Reorg handling is first-class: when the chain rewrites the last n blocks, the indexer rewinds and replays — not a fatal error that leaves the explorer wedged. Backfill capability is required when the chain has been live before the explorer was built; the indexer must be able to replay history from genesis, not just track from the current tip.</p> <h2>Explorer surfaces</h2> <h3>Address pages</h3> <p>Balance, transaction count, first-seen and last-seen block, transfer history, token balances (if the chain supports tokens). Contracts surface the verified source code, the ABI, and a read/write interface for direct contract interaction.</p> <h3>Transaction pages</h3> <p>Sender, recipient, value, fee, gas usage, status, decoded input data (for contract calls), and event logs. Decoded calls are rendered human-readable, not hex.</p> <h3>Block pages</h3> <p>Block height, hash, parent hash, miner or validator, timestamp, transaction count, gas used, and the list of transactions included.</p> <h3>Contract verification</h3> <p>Source code upload, compiler version matching, optimization settings, constructor argument verification. The community can see what the contract actually does; the project's claims about the contract are verifiable.</p> <h2>API surface</h2> <p>REST endpoints (and GraphQL where the buyer needs them) for blocks, transactions, addresses, tokens, and holders. Rate-limited and authenticated for partners. Embeddable widgets — token price, holder count, recent transactions — for partners and exchanges to drop into their own surfaces.</p> <h2>What I ship</h2> <ul> <li><strong>Chain indexer.</strong> Block, transaction, and address ingestion with reorg handling and backfill capability.</li> <li><strong>Explorer UI.</strong> Address pages, transaction pages, block pages, search, contract verification.</li> <li><strong>Token analytics dashboard (for existing-chain tokens).</strong> Holder lists, transfer history, supply schedule visualization.</li> <li><strong>API surface.</strong> REST and optional GraphQL for partners and exchanges.</li> <li><strong>Embeddable widgets.</strong> For partner sites and exchange listing pages.</li> <li><strong>Operational runbook.</strong> Indexer monitoring, database backup, reorg alerting.</li> </ul> <h2>Where it fits</h2> <h3>Custom chain past launch</h3> <p>A proof-of-work coin shipped six months ago; the community is asking where the transparency is. I build the explorer from genesis backfill forward, with the indexer keeping pace with the live tip.</p> <h3>Token on an existing chain</h3> <p>The token lives on Ethereum or Solana. The general-purpose explorer (Etherscan, Solscan) shows the contract but does not surface the project-specific analytics — vesting unlocks, treasury operations, partner allocations. I build the project-specific dashboard alongside the general explorer, not as a replacement.</p> <h3>Exchange listing prep</h3> <p>An exchange is evaluating the token for listing and has asked for an API and an embeddable widget. I build the listing-prep deliverables — API documentation, rate-limited endpoints, sample integrations — to the exchange's published requirements.</p> <h2>How I work</h2> <p>Discovery scopes the chain or token, the indexer architecture (postgres-backed for most cases; ClickHouse where the query volume warrants the columnar store), the backfill scope, the partner API requirements, and the embeddable-widget scope. Implementation runs in two-week sprints with the indexer live first, the explorer UI second, the API third. The principal carrying the work is described <a href="/about">on the about page</a>.</p> <h2>Engagement model</h2> <p>Discovery runs two weeks. Implementation runs eight to sixteen weeks depending on chain complexity and backfill scope. Backfill on a chain that has been live for two years is the long pole. Handover includes the running explorer, the API documentation, the indexer runbook, the database backup pipeline, and a 30-day post-launch support window. To scope an explorer, <a href="/contact">get in touch</a>.</p>