Start here · schema proposal

Carta OCF Core proposal

Read Carta’s plain-language explainer or browse the exact schema bundle tracked in target-schema/Carta.schema.json. Choose the repository copy or Carta’s source file below; both show the same tracked version.

Version: v1alpha1 (2026-06-22)Standard: Carta Cap Table Data SchemaSource: Google DriveUploaded: 2026-07-28SHA-256: b8d54974eea8957f67ebe600097b31024a691e50d949a8a6db6227dd7a2aa06c

Then scroll below to view mappings to and from the proposed Carta schema.

1 · Read Carta’s proposed OCF Core
GitHub copy ↗Carta source ↗
2 · Read Carta’s explainer
GitHub copy ↗Carta source ↗
OCF ↔ Carta / cap-table data

How cap-table records move from OCF to Carta.

OCF is the Open Cap Format: the source-side records and events that describe a cap table. Carta is the destination data model in this comparison. Start with an OCF record to see where each field goes, or switch to Carta records to see what is mapped, derived, or still unmatched.

Start with OCF recordsView Carta records
source→destination
OCFCARTAMAP
Start here

Choose a side, then open a record.

Use the tabs below to switch between the source records and the destination records. The Flow viewer shows relationships across records. It is a fixed diagram, so there are no layer controls.

Legacy PlanSecurity* compatibility wrappers are omitted from this browseable output; their economic mapping is represented by the corresponding EquityCompensation* object (7 wrapper pages omitted).

  1. 1
    OCF recordsSee a source record and where its fields go.
  2. 2
    Carta recordsSee destination definitions, support types, and gaps.
  3. 3
    Inspect the detailsRead the field-level mapping, transformation, and open questions.
01 / source side

OCF records

These are the source-side OCF records and events. Open one to see each field, its Carta destination, and any known loss or open question.

OCF recordMapped

StockClass

33 executable mapping edges · 32 source fields.

CertificatePreferredShareClassDetailsRestrictedStockAward
Open mapping issue
OCF recordMapped

StockIssuance

44 executable mapping edges · 42 source fields.

CertificateCertificateIssuanceTransactionCertificateTransactionItem1 open · 0 closed
Open mapping issue
OCF recordMapped

StockPlan

7 executable mapping edges · 10 source fields.

CertificateIssuanceTransactionOptionGrantOptionIssuanceTransaction
Open mapping issue
OCF recordMapped

StockRepurchase

8 executable mapping edges · 18 source fields.

CertificateCertificatePrecededByRestrictedStockAward1 open · 0 closed
Open mapping issue
OCF recordMapped

StockTransfer

26 executable mapping edges · 18 source fields.

CertificateCertificateCancellationTransactionCertificateIssuanceTransaction
Open mapping issue
Need the raw ledger?

Keep the generated report close.

Read inverse reportView repository ↗