Blake2b Fork: Self-Custody Bitcoin Holders Are Eligible to Claim

What is the Blake2b Fork

A Bitcoin fork is a protocol divergence that creates a new independent chain from a specific block. The Blake2b fork adopts the Blake2b hashing algorithm in place of Bitcoin's SHA-256 — a change that targets different mining characteristics and security properties on the derived chain.

What makes this event significant for Bitcoin holders is the fundamental rule governing any legitimate fork: for every BTC held at a given address at the cutoff block, the controller of that address is entitled to claim an equivalent amount on the new chain.

If you held Bitcoin in self-custody before the Blake2b fork snapshot, your funds on the new chain exist — and they can be claimed with the right technical assistance.

Who is eligible to claim

The criterion is straightforward: whoever controlled the private keys of Bitcoin addresses at the exact moment of the fork block is the legitimate holder of the corresponding tokens on the fork chain.

Direct self-custody — Bitcoin held on a hardware wallet, air-gapped device, or any solution where the holder controls the private keys. This is the most straightforward scenario for claiming.
Multisig — Bitcoin in multisignature configurations where the holder participates as a co-signer. Claiming requires coordination among co-signers but is fully achievable.
Exchange or third-party custody — In general, the right to claim belongs to the custodian, not the end user. No keys, no coins — and no fork tokens either.

This is yet another concrete argument for financial sovereignty: "Not your keys, not your coins" applies equally to fork events.

The risks of doing it alone

Claiming fork tokens requires using private keys on a network other than Bitcoin. Done incorrectly, this process can compromise the security of the original Bitcoin holdings. The main risks include:

Accidental exposure of private keys when entering them into unverified third-party software.
Replay attacks — transactions duplicated across chains that can drain original funds.
Malicious software disguised as fork-claiming tools.
Irreversible loss of Bitcoin through incorrect key handling.

Safe fork claiming always begins by securing the original Bitcoin — only then is the new chain accessed.

How Solidus can help: Solidus Recovery

Solidus Wealth offers the Solidus Recovery service — specialist assistance for those wishing to claim Bitcoin fork tokens safely, without compromising the custody of their original BTC.

Eligibility Audit We analyse the client's addresses to confirm which balances were eligible at the fork's cutoff block.

Secure Claiming Environment The process is conducted in an isolated, audited environment, ensuring private keys are never exposed on insecure networks.

Replay Protection We implement the necessary technical measures to prevent cross-chain replay attacks.

End-to-End Support From the initial eligibility check through to confirmed receipt of claimed tokens, clients receive dedicated guidance at every stage.

Do you hold Bitcoin in self-custody?

Find out whether your addresses are eligible to claim Blake2b fork tokens. Talk to Solidus Wealth and learn how the Solidus Recovery service can assist you.

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