H33-74 on Avalanche

Avalanche is one of H33-74's anchor surfaces, not its foundation. The receipt exists before the Avalanche anchor and remains valid if the Avalanche anchor is later supplemented or replaced on another chain. Avalanche provides one independent notarization. H33-74 receipts can carry many.

How H33-74 anchors to Avalanche

H33-74 anchors to Avalanche C-Chain via EIP-1559 calldata commitments. The commitment is embedded in the transaction calldata as a self-send (no value transfer) so any Avalanche node can index and verify the commitment.

Chain parameters

Chain

Avalanche (chain ID 43114)

Finality

Sub-second probabilistic finality; ~1 to 2 seconds in normal operation.

Anchor cost

Single-digit cents per anchor transaction at typical AVAX prices.

Explorer

snowtrace.io

What an H33-74 anchor record contains

The 32-byte commitment from the receipt (or a Merkle root if batched).
Sufficient on-chain bytes for a third party to verify the commitment matches the receipt.
A timestamp from the Avalanche block, providing independent proof that the receipt existed by no later than that block.

What it does not contain: sensitive payload data. The receipt's content lives off-chain. The anchor only commits to its existence and identity.

When Avalanche is the right anchor

Avalanche is the right anchor when sub-second notarization latency is required, when subnet-style deployment flexibility is needed in the future, and when the operator values Avalanche's specific consensus properties for institutional adoption. The C-Chain provides EVM-compatible anchoring with fast finality.

The portability story

A receipt anchored on Avalanche can also be anchored on Bitcoin, Ethereum, Solana, Polygon zkEVM, Zcash, or any other chain H33-74 supports. The anchors are independent. Adding more anchors does not change the receipt. Removing one anchor (or having one chain become unavailable) does not invalidate the others.

If Avalanche ever becomes inappropriate for an operator's use case (regulatory, performance, security, cost), the operator adds an anchor on a different chain and continues operating. The historical evidence does not have to migrate, because it was never bound to Avalanche.

Verifying a Avalanche anchor

A third-party verifier needs the H33-74 receipt, the Avalanche anchor transaction (or its hash), and the open-source H33 verifier. From those inputs:

The verifier checks the three post-quantum signatures over the receipt.
The verifier checks that the Avalanche anchor transaction commits to the receipt's identity.
The verifier reads the Avalanche block timestamp to establish independent existence-time.

See H33-74 on other chains

The same receipts that anchor to Avalanche can anchor to any of the others.

One Receipt. Multiple Chains. H33-74 Overview