01Obsidian

BlockchainMessaging

Messages with finalized on-chain ordering. When you send a message on Obsidian, it becomes part of canonical chain history with archive-backed retrieval rather than a database entry or an IPFS pin.
02Section 02

FinalizedHistory

Your message · Block 12345 · Archive nodes · Long-term retrieval

When you send a message on Obsidian Chain, it does not go to a server that might shut down. It does not get stored on a service that might cancel your account. Your message becomes an immutable part of the blockchain's history.

01

Signed by you.

Cryptographic proof of authorship that cannot be forged or falsely attributed.

02

Included in a block.

Validators commit your message to canonical chain history through the lane-header path.

03

Finalized history.

Casper FFG makes ordering irreversible, while archive nodes keep message data retrievable over time.

03Section 03

BlockchainGuarantees

Immutable.

Cannot be edited after inclusion.

Undeletable.

No admin can remove it.

Available.

Lane committees attest availability; archives keep long-term history.

Verified.

Consensus validates every message.

Queryable.

Retrievable via standard RPC.

What makes this different from IPFS.

IPFS relies on pinning. Someone must actively keep your data available. If the node goes offline, the provider shuts down, or payments stop, your data can disappear. On Obsidian, message ordering and commitments are part of the blockchain itself. Validators verify availability during the serve window, and archive nodes preserve long-term history for RPC retrieval.

04Section 04

CryptographicSecurity

Every message on Obsidian Chain includes multiple layers of cryptographic protection to ensure authenticity, prevent replay attacks, and guarantee message integrity.

ECDSA signature.

Proves sender authenticity. Your private key signs every message, creating unforgeable proof of authorship.

Chain ID.

Prevents cross-chain replay attacks. Messages are bound to Obsidian Chain and cannot be replayed on other networks.

Nonce.

Prevents same-chain replay attacks. Each message has a unique nonce that can only be used once per sender per block.

Target block.

Controls intended inclusion window. Messages specify their target block for predictable timing.

All cryptographic checks are verified at multiple layers: RPC · P2P gossip · Block build · Consensus

05Section 05

PlatformComparison

PlatformDeletableEditableSurvives shutdownFeeless tier
Twitter / XYesYesNoYes
Ethereum (calldata)NoNoYesNo (gas)
IPFSIf unpinnedNoMaybeDepends
Obsidian ChainNoNoYesYes (SM)

Obsidian works alongside Arweave. Use Arweave for large historical file archives, Obsidian for EVM-native messaging with feeless and priority tiers.

Your messages, finalized.

Build on a chain designed from day one for archive-backed communication.