Repairs, Upgrades & Migrations
For teams maintaining an existing contract, application or data service. Start with reproducible behaviour and a dependency inventory, then define a bounded change that can be tested, rehearsed and handed over with its remaining risks visible.
Illustrative engineering workflow. Interfaces, environments and responsibilities are assessed for the agreed scope.
01 / SCOPE
Deployments may have restrictions that source code does not reveal.
Inspect authorised source, deployment records and dependency versions. Reproduce the reported fault and trace it across contract, application and data boundaries. Distinguish code defects from configuration, provider and operator issues before agreeing the repair.
Scope changes to network interfaces, wallet providers, application frameworks or external services. Map behaviours that must remain stable and document differences that users will notice. Source access, licence permissions and a reproducible build are assessed before conversion work is accepted.
Identify contract upgrade mechanisms, privileged roles and unavailable permissions. Determine whether the change requires an implementation upgrade, a replacement deployment or an application-only repair. Custody, legal and commercial decisions remain separate; engineering access does not confer approval to move assets.
02 / SCOPE
Every migrated record needs an agreed source and destination.
Review storage layout, initialisation, interface changes and administrative permissions. Specify version checks and upgrade order where supported. Test against representative prior state, including partially completed workflows. Immutable deployments may require replacement rather than an in-place change.
Define snapshots, mapping rules, balance or record reconciliation and handling of late-arriving events. Scope claim-based transitions or operator-assisted migration only where appropriate. Document what happens to old addresses, duplicate requests, missing records and users who do not migrate immediately.
Rehearse the sequence in a suitable local or test environment with representative data. Establish pause points, acceptance checks and abort conditions. Describe where rollback is possible and where an irreversible transaction requires a separately designed recovery path.
03 / SCOPE
Deployment is one checkpoint in the change process.
Run agreed contract, integration and user-journey checks against the changed system. Compare state and outputs before and after the rehearsal. Record unresolved issues, environmental differences and dependencies. Audit preparation is not independent certification; independent review is separately scoped.
Prepare version records, changed configuration, operator instructions and a verification checklist. Scope post-change observation and maintenance explicitly, including who reviews exceptions and approves changes. Do not imply indefinite monitoring or unsupported recovery guarantees.
FROM BRIEF TO HANDOVER
Document the fault or change request, available access and current deployment. Agree scope, excluded components, release authority and measurable acceptance cases.
Implement the smallest agreed repair or migration tooling. Preserve reproducible build inputs and maintain a clear record of behavioural changes.
Rehearse deployment order, recovery decisions and state reconciliation. Run regression scenarios and present unresolved findings before any live transition is approved.
Deliver agreed code, migration instructions, evidence and version records. Confirm operating ownership, live execution responsibilities and the boundaries of follow-on maintenance.
BEFORE WE BEGIN
No. Available mechanisms, permissions and dependencies determine the options. Some changes require a replacement deployment or cannot be performed through the existing contract.
Only where the architecture permits it. Rehearsals must identify irreversible steps and recovery limitations before anyone approves live execution.
Source or build artefacts, deployment addresses, non-secret configuration and a description of the issue help establish scope. Do not send private keys, recovery phrases or passwords.
CONNECTED CAPABILITIES
YOUR NEXT STEP
Tell us about your users, existing tools and the outcome you want. Please do not send passwords, private keys or account secrets.
