Indicies
Free SagaChain™ Indicies
PraSaga™ Foundation will deliver free public feeds for official U.S. economic data, global indicators, fiat FX, and crypto markets on-chain as verifiable objects in SagaChain™ PSAs, universally accessible from any connected blockchain via SagaInterop™.
Why This Matters
Public Good: Open access to macro, FX, and crypto data without proprietary paywalls.
Verifiable by Design: Data stored with Merkle proofs & PSA logs.
Interoperable Everywhere: Any connected chain can query or subscribe via SagaInterop™.
Data Sources
U.S. Government Feeds: CPI, PCE, GDP Deflator (BLS/BEA).
Global Indicators: IMF, World Bank, OECD, national banks.
Fiat FX: G10 + EM pairs, real-time.
Crypto Markets: Top 100 assets (spot, volume, volatility); now live demo scripts running via Coinbase API.
How it works
Pipeline: Sources (US / Global / FX / Crypto) → SagaServer → SagaNode → SagaPSAs (EconomicDataPSA, FXDataPSA, CryptoDataPSA) → SagaInterop → External Chains (ETH, BTC, ADA, SOL, etc).
Steps:
1 – SagaServer polls sources and forms SagaPython™ messages.
2 – SagaNode routes to PSAs; state persisted with Merkle proofs.
3 – Queries & notifications handled cross-chain via SagaInterop bridges.
Oracle Integration & Listen/Notify Architecture
Key Concepts: Objects can emit state changes, clients register for notifications, persistent object-level monitoring.
Advantages: More flexible than logs/polling; independent tracking; continuous system-wide visibility.
Use cases
Economic Data Oracles: deliver CPI, FX, crypto, interest rates.
DeFi automation: stop-loss, limit orders, trading triggers.
Challenges: Fee funding, nested execution costs, Python object security.
Comparison: Ethereum/Solana rely on event logs; SagaChain uniquely implements listen/notify at object level.
Strategic Value: Oracle-driven automation, responsive event-driven blockchain.
Public Development Testnet – LIVE
Announcement: SagaInterop feeds and PSA demos are live on the Public Development Testnet.
Demo Scripts:
- Coinbase Crypto Price Feeds:
- Rates PSA class storing pair → price (scaled int) → timestamp.
- Writer scripts (__body()) to push single or bulk pairs (BTC-USD, ETH-USD, etc).
- Reader scripts (__body()) to pull rates, decimals, and timestamps.
- Economic Feeds: CPI, PCE, GDP Deflator ingestion pipeline is being tested for integration.
- How to Access:
- Run the provided __body() examples for get/set.
- Test with bulk Coinbase ticker feeds (setBulk).
- Observe updates with listener notifications in the Testnet explorer.
Use cases
Analytics & AI: Unified on-chain datasets for dashboards and training pipelines
DeFi: Inflation-aware stablecoins, FX baskets, collateral logic, automated triggers
Institutions: Standardized macro references, auditability, compliance reporting
Developer Access
Repos:
- SagaServer → https://code.prasaga.com/sagachain/sagascan-server
- SagaInterop Bridges → https://code.prasaga.com/sagachain/sagainterop
- Docs & Examples: PSA schema & queries, proof verification, dApp integration
- Feature Chips: Free access (txn fee only), Merkle proofs, Interoperable, Open standards
- Testnet Scripts:
- Coinbase price writer/reader __body() examples
- EconomicDataPSA, FXDataPSA, CryptoDataPSA scaffolds
Timeline
Phase 1 – Q4 2025: Public Dev Testnet live with demo PSA scripts (current state).
Phase 2 – Q3 2026: SagaChain MainNet – feeds live, accessible for all accounts.
Phase 3 – Q3 2026 and beyond: Continued integration of global data sources.
We invite L1/L2 teams, enterprises, and data providers to connect to SagaInterop™ and expand this shared data layer.
Disclaimer