Migrating from Ethereum to Solana: Scope, Cost Drivers, and Evidence

An Ethereum-to-Solana migration is not a mechanical port, but neither is it governed by a universal rewrite percentage. The affected scope depends on contract behavior, state, assets, wallets, signatures, data pipelines, integrations, governance, and operations. Estimate those workstreams from the actual product.

Wavect has supported Quivr and other blockchain products. That experience informs the questions below, but a private engagement is not a market benchmark or evidence that another product will have the same motivation, scope, schedule, or result.

Should you migrate, dual-deploy, or remain?

Begin with the product constraint, not chain popularity. Define representative transactions, value at risk, latency and finality needs, fee sensitivity, throughput, asset and protocol dependencies, wallet audience, compliance obligations, availability, and recovery targets. Measure the current system and a candidate implementation under the same workload.

Compare at least three options: improve the current Ethereum or L2 design, deploy a Solana version alongside it, or migrate and sunset the old path. A dual deployment can reduce cutover risk while increasing liquidity fragmentation, data reconciliation, support, monitoring, governance, and security work. State those costs explicitly.

Why is the program model different?

Solana programs receive explicit accounts through instructions, while mutable state lives in accounts. Account ownership, signer and writable privileges, program-derived addresses, cross-program invocations, transaction limits, and compute budgets shape the design. The official core overview describes these current primitives (Solana core concepts).

Do not translate every Solidity entry point into one Rust or Anchor instruction and call the job complete. Map invariants, authority, ordering, atomicity, concurrency, account sizing, initialization, closure, error behavior, and denial-of-service boundaries. Some business rules can carry over; their implementation and threat model still need review.

What belongs in the migration inventory?

How should assets be redesigned?

Map each ERC asset's actual behavior rather than assuming ERC-20 equals one SPL setting. Solana token designs can involve mint accounts, token accounts, associated token accounts, authorities, and optional Token Extensions. Extensions add state and compatibility constraints, and many must be chosen when an account or mint is initialized. The current extension reference documents those tradeoffs (Solana Token Extensions).

Decide supply continuity, holder claims, decimals, metadata, authority transfer, freezes, fees, hooks, confidential features, custody, redemption, and what happens to the old asset. A bridge, snapshot, claim contract, swap, or manual process creates different trust and failure assumptions. Get legal and tax advice for the actual asset and jurisdictions.

What changes in wallets and transaction UX?

Support must be defined by wallet, platform, transaction version, signing capability, and user journey. Test connection, account selection, simulation, blockhash expiry, partial signing, sponsorship, priority fees, rejected signatures, failed transactions, retries, and recovery. Do not reduce the task to replacing MetaMask with one Solana wallet.

Keep user-facing state separate from chain submission state. A transaction can be signed, submitted, landed, failed, expired, or require reconciliation. Make fee payer, asset movement, permissions, and finality visible enough for the product's risk.

How do fees affect the decision?

Compare fees using captured production-like transactions, not a chain-wide average. Solana currently describes a base fee per signature plus an optional prioritization fee. Requested compute limits, signatures, transaction failure, account creation, rent-related balances, RPC, and third-party services can affect total cost. The official fee reference explains the formula and current mechanics (Solana fee structure).

Record native units and fiat conversion at a named timestamp. Include failed and retried transactions, congestion scenarios, sponsorship, RPC and indexing charges, treasury operations, bridges, and operational staff. Re-run the workload instead of promising that one chain is always cheaper.

How should upgrade authority be handled?

Inventory who can deploy, upgrade, pause, close, mint, freeze, configure, or move treasury assets. A program authority can be an individual key, an organization-controlled account, or another governance arrangement depending on the deployment. Do not describe it as inherently one key or automatically a multisig.

Define approval thresholds, hardware-backed signing, separation of duties, emergency actions, delays, monitoring, recovery, and the path to immutability where appropriate. Test the operational procedure, not only the program logic.

How should RPC and indexing be scoped?

List every read path, subscription, historical query, event or log dependency, analytics event, confirmation rule, and reconciliation job. Evaluate providers or self-hosting against method support, freshness, retention, consistency, quotas, latency, regions, service levels, incident history, and exit.

Design fallbacks according to data semantics. Switching RPC endpoints does not guarantee identical indexed state or history. Preserve checkpoints, idempotent backfills, source provenance, lag metrics, and a way to rebuild derived data.

What does the estimate look like?

Do not quote 40 to 70 percent rewritten or six to fourteen engineering weeks without inspected scope. Estimate work packages with assumptions, dependencies, acceptance evidence, confidence, and responsible owner:

1. Discovery, behavior mapping, threat model, and option decision.
2. Program and account design, implementation, tests, and deployment controls.
3. Asset and user-state transition, including supply and treasury reconciliation.
4. Wallet, signing, transaction, fee, and recovery UX.
5. RPC, indexing, analytics, monitoring, and operations.
6. Integration migration for exchanges, custody, partners, or protocols.
7. Independent security review, remediation, and retest.
8. Rehearsals, rollout, coexistence, rollback, support, and decommissioning.

Include product, legal, compliance, operations, treasury, communications, and external suppliers. Use ranges driven by discovered unknowns and update them when evidence closes those unknowns.

"A chain migration estimate is an inventory of changed trust, state, and operations, not a percentage applied to contract code."

What evidence should authorize launch?

• Behavior and invariant parity is accepted for every supported user journey.
• State, asset supply, balances, authorities, and treasury reconcile under rehearsal.
• Performance and fee tests cover representative, stress, congestion, and failure cases.
• Wallet, RPC, indexer, integration, monitoring, recovery, and support paths are tested.
• Independent review findings are resolved or explicitly accepted by authorized owners.
• Cutover, coexistence, rollback, user communication, and old-system controls have named owners.

When should you not migrate?

Do not migrate when the stated constraint can be solved more safely in the current ecosystem, required integrations are unavailable, user and liquidity fragmentation outweighs the gain, operational ownership is missing, or the evidence does not clear the acceptance thresholds. A trend, grant, or isolated fee comparison is not a product case.

If migration remains justified, use our blockchain engineering workstream to turn the inventory into an implementation and validation plan. Keep an independent security reviewer separate from the implementation team.