iOS App

Henceforth

A full Forth-2012 compliant interpreter with an integrated Bitcoin SV wallet, running natively on your iPhone and iPad.

henceforth

$ 2 3 + .

5 ok.

$ : square dup * ;

ok.

$ 7 square .

49 ok.

── Bitcoin ──────────────────────────

$ wallet-balance .

1,250,000 sats ok.

$ tx-new 10000 make-p2pkh-script tx-add-output tx-broadcast

Transaction broadcast. txid: 3a7f...c9e1 ok.

$ _

Capabilities

133CORE Words

Full Forth-2012 CORE compliance. Stack operations, arithmetic, comparison, control flow, defining words, pictured output, and more.

350+Total Vocabulary

Beyond the standard: 140+ Bitcoin Script opcodes, transaction builder words, blockchain API access, graph plotting, and file management.

BRC-42Key Derivation

Type42 key derivation for deterministic address generation. Send and receive BSV with modern cryptographic key management.

SPVVerification

Simplified Payment Verification built in. Merkle proofs validate transactions without trusting a third party — exactly as Satoshi described.

ARCBroadcasting

Direct transaction broadcasting via ARC with automatic failover. Build, sign, and broadcast transactions from the FORTH terminal.

BRC-2Encryption

End-to-end message encryption using ECIES. Wire-compatible with the BSV SDK. Paymail support with BRC-30 peer-to-peer protocol.