HCS-1 · Immutable files
Store a file on Hedera Consensus Service and retrieve it through its content address. Best for permanent media, metadata, and public artifacts.
Create an HCS-1 fileA local, maintained guide to HCS-1 files, HCS-5 Hashinals, HCS-3 references, and the inscription API. It also includes a ready-to- use kit for AI agents.
Keep protocol names explicit so your team and your users always know what a topic represents.
Store a file on Hedera Consensus Service and retrieve it through its content address. Best for permanent media, metadata, and public artifacts.
Create an HCS-1 filePair a primary file with JSON metadata so wallets, indexers, and marketplaces can understand the Hashinal without a private database.
Create a HashinalUse Hedera-backed references as durable links between applications. The same topic can power a site, an API response, or an indexed collection.
See protocol examplesGenerate transaction bytes, sign with the wallet that owns the account, then poll the returned reference until the topic is ready.
POST /api/inscriptions/generate
→ sign transactionBytes with your wallet
→ submit to Hedera
→ GET /api/inscriptions/{tx_id}