Cardano Catalyst Fund 14

OData for
Cardano

OData V4 service exposing the Cardano blockchain. Packaged as a SAP CAP plugin - install with npm, configure via cds.requires, Cardano services register automatically.

Get Started View on GitHub 
# Install the CAP plugin
npm install @odatano/core

# package.json (cds.requires)
"odatano-core": {
  "network": "preview",
  "backends": ["blockfrost"],
  "blockfrostApiKey": "preview_api_key",
  "txBuilders": ["buildooor"]
}

# POST - build a simple ADA transaction
POST .../cardano-transaction/BuildSimpleAdaTransaction
{ "senderAddress": "addr1...",
  "recipientAddress": "addr1...",
  "lovelaceAmount": 5000000 }
  • 1285 Tests
  • 97% Statement Coverage
  • Apache 2.0 License
  • v1.7.5 NPM Package

Architecture

Any OData V4 client connects to ODATANO's three CDS services. ODATANO orchestrates Blockfrost, Koios, and Ogmios with automatic failover, indexes results into SQLite or HANA, and routes transaction submission to the configured backend. Three Cardano networks supported: mainnet, preview, preprod.

Your Application

SAP Fiori / UI5 Any OData Client REST / curl

ODATANO

CardanoODataService CardanoTransactionService CardanoSignService

Cardano Blockchain

Mainnet Preview Preprod

CDS services

Cardano core usage is exposed as OData V4 entities and actions. Standard query options ($filter, $select, $expand, $orderby) work as in any OData service. Full metadata available at $metadata.

Read

CardanoODataService: 18 entities, 16 actions. Blocks, Transactions, Addresses, UTxOs, Pools, Accounts, DReps, Protocol Parameters, transaction CBOR parser. Lazy on-demand indexing with TTL refresh.

Transactions

CardanoTransactionService: 13 actions. ADA transfers, multi-asset, mint, Plutus V3 spend, CIP-20 metadata, CIP-31 reference inputs, CIP-33 reference scripts. Two builder engines: CSL and Buildooor.

Signing

CardanoSignService: 8 actions. External signing via CIP-30 wallets or Cardano CLI; server-side signing via PKCS#11 HSM. Private keys never reach the server in any flow.

Stack

Runtime, dependencies, and test coverage.

Framework SAP CAP 9.x
Language TypeScript 5.x
Runtime Node.js 20 / 22
Database SQLite · SAP HANA
Blockchain APIs Blockfrost · Koios · Ogmios
TX Builders CSL · Buildooor
Testing 31 automated test suites, 1285 tests
License Apache 2.0
Example Application

TRACE

SAP Fiori + CAP application built on top of @odatano/core. Tracks pharmaceutical batches across manufacturer, distributor, and pharmacy using NFTs minted under a Plutus V3 policy. Each handoff is a Plutus spend with a continuing-output datum update. Document hashes (certificates, lab reports, cold-chain telemetry) are anchored via CIP-20 metadata. All signing happens in the user's CIP-30 browser wallet.

Learn More View Source
Mint Batch NFT (Plutus V3)
Transfer Custody
Anchor Documents
Public Verification