Blockchain Databases logopeterindia.net
Knowledge Hub

Blockchain & Immutable Databases

A directory of blockchain and immutable databases — dedicated blockchain databases, enterprise and cloud ledger features, and decentralized storage and data networks. Links go to each project's home or documentation page.

24 topics•4 categories•Updated October 2026

Blockchain & Immutable Databases

7 entries

Databases that combine query capabilities with tamper-evident, cryptographically verifiable storage.

01BigchainDBBlockchain database combining database-style query power with decentralized control and immutable, asset-aware storage. 02CovenantSQLDecentralized, immutable SQL database for dApps and traditional projects (development has slowed). 03Chromia (formerly ChromaWay / Postchain)Relational blockchain platform that grew out of Postchain, the SQL-based framework for consortium blockchains. 04Postchain DocumentationDocumentation for Postchain, the modular framework for building relational, consortium blockchains. 05immudbOpen-source immutable database with cryptographic verification of every record. 06FlureeGraph and semantic data platform with immutable, cryptographically verifiable ledger history. 07PlanetmintBlockchain database for machine data and provenance, a successor to BigchainDB.

Enterprise & Cloud Ledger Databases

4 entries

Ledger features built into mainstream databases and enterprise blockchain stacks.

08Azure SQL LedgerTamper-evident ledger tables built into Microsoft SQL Server and Azure SQL. 09Oracle Blockchain TablesDocumentation for insert-only, cryptographically chained tables in Oracle Database. 10Hyperledger FabricEnterprise blockchain framework with a ledger and world-state database for shared, permissioned data. 11KaleidoManaged enterprise blockchain and tokenization platform.

Decentralized Storage & Data Networks

9 entries

Peer-to-peer storage and data protocols used with blockchains.

12IPFSContent-addressed peer-to-peer file storage and distribution. 13FilecoinDecentralized storage network built on IPFS with a blockchain incentive layer. 14ArweavePermanent, decentralized data storage network. 15StorjDistributed cloud object storage. 16SiaDecentralized cloud storage network. 17WalrusDecentralized data storage and availability platform. 18OrbitDBPeer-to-peer database built on IPFS. GitHub lists v4.0.0 as the latest release, from May 2025. 19TablelandDecentralized SQL database for web3 data. The tableland.xyz address now redirects to a Linktree page for Recall Labs, so check the project's GitHub organization for its current status. 20The GraphProtocol for indexing and querying blockchain data.

Related Pages

4 entries

Related blockchain directories on this site.

21Blockchain ResourcesBooks, papers, courses and news on blockchain. 22Blockchain for IoTResearch and projects combining blockchain with IoT. 23Post-Quantum Cryptography for BlockchainHow quantum computing threatens blockchains and the standards and research responding. 24Database Management SystemsDatabase management systems across relational, NoSQL and analytical engines.

Frequently Asked Questions

What is a blockchain database?

A database that stores data in an append-only, cryptographically linked structure so any tampering is detectable, while still offering familiar querying such as SQL or document queries.

How is a blockchain database different from a blockchain?

A blockchain focuses on decentralized consensus and smart contracts, while a blockchain database focuses on storing and querying data with tamper-proof history. Many are centrally managed rather than fully decentralized.

What happened to Amazon QLDB?

AWS has discontinued Amazon Quantum Ledger Database (QLDB), and its page now redirects to Aurora, so it is no longer listed. Options include Azure SQL Ledger, Oracle Blockchain Tables and immudb.

When should I use one?

Use one when you need an auditable, tamper-evident record for compliance, supply chain provenance or multi-party data sharing without running a full blockchain network.

Are all of these projects actively maintained?

No. Some, such as CovenantSQL and BigchainDB, show little recent development, and Postchain has become Chromia. Check each project's repository and release history before relying on it.