Respect each chain’s native model
Ethereum applications commonly work with blocks, transactions, receipts, logs, account state, and contract calls. Solana applications work with slots, accounts owned by programs, versioned transactions, instructions, inner instructions, and commitment levels. A shared product model can expose transactions, transfers, assets, and balances, but it should preserve the native coordinates behind every result.
Avoid forcing one chain into the other’s schema. An Ethereum log and a Solana instruction can both support a normalized event, yet they have different indexing, ordering, and decoding rules. Return a common envelope plus a namespaced evidence object.
| Concern | Ethereum evidence | Solana evidence |
|---|---|---|
| Execution result | Receipt and status | Transaction metadata and error |
| Application event | Log with topics and index | Instruction or inner instruction |
| State context | Block number or tag | Slot and commitment |
| Asset instance | Chain ID + contract | Cluster + mint |
| Reorganization handling | Block hash and parent continuity | Slot/block continuity and commitment |
Index for product questions
RPC nodes expose protocol data, not every query a product needs. Repeatedly scanning logs or signatures on demand becomes expensive and slow. Build a durable index that stores raw blocks or slots, transactions, receipts or metadata, logs or instructions, decoded events, and address or account relationships.
Advance checkpoints only after a complete batch commits. Reprocessing should be idempotent. Detect parent or slot continuity issues and roll back derived records when required. Keep records in observed, confirmed, or finalized states under a documented policy rather than labeling all successful responses final.
Create a versioned asset identity service
Ticker symbols and token names are not unique. Identify an Ethereum token by chain and contract address, and a Solana token by cluster and mint. Preserve raw integer amounts and decimals. Connect bridged, wrapped, or migrated instances to a broader canonical asset only through explicit, versioned mapping.
Treat native assets, wrapped forms, staked positions, receipt tokens, and protocol deposits as separate components. A user interface can group them for convenience, but the API should not imply identical liquidity or redemption rights.
Plan historical coverage and provider capacity
Historical state, traces, old transactions, and high-volume program queries may require archive or indexed services beyond ordinary node access. Test known old blocks or slots, large responses, transaction-version support, batch behavior, and retention before selecting a plan. Public endpoints are useful for development but do not replace production capacity planning.
When using multiple providers, define consistency and failover. Randomly distributing sequential reads can mix different chain heads. Pin a workflow to one context or require a minimum block or slot. Monitor lag, null-response rate, method-specific errors, and reconciliation differences.
Expose evidence to downstream products
A normalized transfer or protocol event should carry an internal evidence ID. Users, compliance reviewers, tax engines, and AI explanations can follow that ID to chain, block or slot, transaction, log or instruction, decoder version, and finality state. This keeps the concise product response connected to a reproducible source.
Use the detailed Ethereum RPC article and Solana pipeline article as implementation checklists for each chain.