CoreCast : Smart Blockchain gRPC Streams

CoreCast delivers ultra-low latency gRPC streams with parsed, filterable events for real-time trading apps for multiple blockchains, including Solana, Tron and EVMs.

CoreCast : <span class="block lg:inline"><span class="bg-gradient-to-r from-gradient_left to-gradient_right background-text-clip text-4xl lg:text-5xl">Smart Blockchain gRPC Streams</span></span>

scroll

What is CoreCast?

CoreCast is Bitquery’s Smart gRPC stream for multiple blockchain networks, delivering ultra-low latency, parsed, and filterable events. Get trades, transfers, balances, and liquidity updates enriched with context — ready to power real-time trading, DeFi apps, terminals, and bots without parsing overhead

Why Smart gRPC Streams?

Ultra-low latency

Lightning-fast event delivery.

Context-aware

Each event comes enriched with token, balance, and program metadata.

Efficient

Subscribe only to the events you need.

Simple integration

Strong Protobuf contracts, stable schemas.

Broad protocol coverage

All major DeFi protocols supported, with new ones added continuously.

Topics You Can Stream

Transactions: Finalized transactions with parsed instructions, logs, and status
Transfers: All token transfers with token context and instruction logs
Balances: Balance and balance updates for tracked accounts and mints
DEX Trades: Swaps and trades across supported protocols with token balance post swap
DEX Orders: Order lifecycle events including order book data, pool balance across Serum, Openbook, and other DEXs
DEX Pools: Pool creation, updates, liquidity changes, and pool balance

Context-Aware Filtering

Filters are required to subscribe — ensuring your stream is lightweight and preciseYou can filter by :

addresses (senders, receivers, owners, program IDs)

tokens (mints like WSOL, USDC, SPL standards)

value thresholds (min amounts in native or token units)

markets/pools (DEX protocols, pool IDs, markets)

Filtering is applied server-side, reducing bandwidth and speeding up processing.

Key Features

Ultra-low latency delivery for

Trading and real-time apps

No parsing required

Save hours of engineering time

Smart delivery

Only the events you need

Battle-tested infrastructure

Powered by Bitquery

Who is CoreCast For?

Trading terminals needing structured real-time feeds

Algo traders building latency-sensitive strategies

DeFi apps tracking liquidity, swaps, and balances

Telegram bots streaming on-chain activity directly to users

Analytics platforms needing structured, real-time onchain data

Developers who don’t want to waste time parsing raw gRPC streams

Trusted by the leading organizations in Web3

Low Latency Data Streams through Kafka and CoreCast

Feature / Stream

Websocket

Kafka

CoreCast (Smart gRPC)

Latency

~1 second (network + parsing overhead)

< 500 ms (sub-second)

< 100 ms (ultra-low latency)

Filtering

Most powerful: addresses, tokens, pools, value thresholds, USD

Available: addresses, tokens, pools, thresholds (not as rich as WebSocket)

USD Values

Built-in

(Available in different topic)

(planned)

Reliability

Auto-reconnect via GraphQL, but no replay

Retention available, replay from checkpoints

Query GraphQL, no replay support

Retention / Replay

Yes, configurable retention window

Schema / Data Format

JSON over WebSocket

Avro/Protobuf over Kafka

Protobuf (typed contracts)

Delivery Guarantees

At-most-once

At-least-once (can configure exactly-once)

At-most-once

Integration Complexity

Easiest for frontends, explorers, bots

Requires infra (Kafka cluster, consumers)

Lightweight, good for backend apps and trading engines

Bandwidth Efficiency

Medium (JSON, more verbose)

High (binary encoding, batching)

Medium (binary Protobuf, direct streams)

Use Case Fit

Dashboards, explorers, analytics needing USD values & rich filters

Mission-critical infra: indexing, ETL pipelines, archival, guaranteed delivery

Ultra-low latency trading, real-time DeFi apps, terminals, Telegram bots

CoreCast : Smarter, faster gRPC Streams

Pricing

Developer Plan (Free)

Free plan for developers or small projects

Personal Use Only

10k Points For Trial

10 Rows Per Request

Public Telegram Support

All Blockchains

10 Request/minute

2 simultaneous streams for Testing purposes

Free Plan for

developer or small project

$0 / month

10K points for trial
All Blockchains

Commercial Plan

Tailored solutions for business and enterprise needs

Customizable for your needs

24/7 Access to our Engineering Team

Priority support via Slack and Telegram

All Blockchains

Scalable API calls & No Throttling

Multiple Data Interfaces (SQL, Cloud, Kafka and more)

Dedicated onboarding & custom SLA

Talk to our team for pricing

Or Start Free Trial

Custom Solutions
Priority Support

Datashares & Exports

Access blockchain data on various platforms

Available on Snowflake, BigQuery, S3, Azure, & more

Reliable historical and real-time blockchain data

No setup or infrastructure needed

Structured data for AI agents & MCP servers

Accelerate your go-to-market with instantly usable data

Balance & Audit data for Custodians, Exchanges & more

Talk to our team for pricing

Or Start Free Trial

Data Export Options
No Setup Required

FAQ

CoreCast delivers pre-parsed, filterable, low-latency event streams across multiple blockchains, unlike raw gRPC or JSON-RPC WebSockets that require manual parsing and management. It abstracts protocol differences, optimizes for real-time trading, and provides a unified, production-ready streaming interface.

Comparable to leading Solana streaming providers, but with parsed events.

Yes. Filters are mandatory and server-side applied for efficiency.

or get in touch