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MOBILE-ID · TRUSTED LTANS

Legacy Archive Migration

Import legacy archives from checkpoints while distinguishing declared source dates, intake time and actual prior evidence.

Problem and records to preserve

A declared creation date is not cryptographic evidence of that historical time.

SYNTHETIC CASE

Synthetic historical-data migration batch

MIG-SYN-001
ElementIllustrative scope
Decision makers / usersMigration architects, repository owners and records administrators
Source systemHistorical store / legacy DMS
RevisionSeparate source-declared date from receipt; record actual historical material and gaps.
Record relationshipRetain source IDs, old revisions and target mappings; no retroactive trusted dates.

Sector-specific record journey

01

Inventory

Inventory source IDs, revisions, counts, formats and readability with provenance.

02

Classify evidence

Distinguish existing cryptographic evidence, signatures, timestamps and self-declared metadata.

03

Hash/reconcile

Hash actual bytes and reconcile counts/attachments; claimed digests are not byte checks.

04

Batch deposit

Deposit with idempotency/per-item receipts; partial failure does not justify blind full replay.

05

Verify

Validate old evidence with explicit tools/context; missing material limits historical conclusions.

06

Accept scope

Accept source/target mappings and scope; a new timestamp does not prove an asserted historical date.

Delivered artifacts

RecipientArtifact
Source systemIntake receipts, source/revision-to-archiveId/jobId mappings and per-item errors.
Package recipientPer-item receipts, reconciliation totals and outstanding-item list.
Record owner / operationsCompleted/outstanding inventory, applied decisions and report references; no automatic legal conclusion.

Rights, retention and deployment

Custodians grant reread access; acceptance owners approve migration scope.

Pilot representative records and fully reconcile before retiring source; estimate duration from measurements.

Retention authority and exit

The owner must approve the retention authority and trigger for this record class: A historical archive inventoried and batched by checkpoint.

Sample dossier and tests

Synthetic text files exercise inventory and hashing; they are not signed contracts, real records or ERS/XMLERS.

Download synthetic dossier
TestExpected outcome
IntactFile inventory, size and SHA-256 match the manifest.
Missing / changed bytesThe verifier rejects the package without claiming inventory success.
Sector business caseDetect missing files or byte changes before retiring the source.

Scope a PoC for this dossier

Test incomplete, duplicate and interrupted batches; resume from checkpoints and retain distinct ingestion time.

Prepare a sector-specific request

Finalization point and specific acceptance

Control pointRequirement
Source eventA historical archive inventoried and batched by checkpoint.
Revision / decisionSeparate source-declared date from receipt; record actual historical material and gaps.
Test and expected resultCheckpoint resume does not duplicate submissions; new genTime is not relabeled historical creation.

Sample inventory/hashing checks bytes only. Authorization, decision and state cases must run in the provisioned test environment before business acceptance.

Four distinct time concepts

TimeInterpretation
Business dateSource-declared issue/transaction date; retain provenance and authority.
Receipt timeService records receipt; evidence generation may still be pending.
genTimeTime in a verified TSA token; check digest binding and source.
evaluatedAtReport evaluation time; read with policy, evidenceVersion and trust context.

An old source date does not create historical evidence. Retain the source date/provenance; receipt or a new token cannot establish historical attestation.

Source-system handoff record

InformationValue / decision
RecordMIG-SYN-001
Source systemHistorical store / legacy DMS
Revision relationshipRetain source IDs, old revisions and target mappings; no retroactive trusted dates.
Recipient and outputPer-item receipts, reconciliation totals and outstanding-item list.
Rights and authorityCustodians grant reread access; acceptance owners approve migration scope.
Required rejection testDetect missing files or byte changes before retiring the source.

Sector information is source business metadata, not automatically new REST fields. Agree field mapping and ownership before a PoC.

Next steps

Search LTANS documentation

Expanded illustration