Bitcoin transaction experiments

ExecutionAllBrowser replayLocal node required

Test environmentAllOffline fixtureRegtestDefault Signet

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Live Signet split and return

Follow a confirmed funding, three-recipient split, and four-input consolidation back to the original wallet.

Recorded default SignetLocal node requiredVerified 2026-09-12

Prerequisites

Node.js 22.12+; Bitcoin Inquisition 29.2.0; LND 0.20.1-beta

Test-sat budget

9,000 test sats funded; 7,964 returned. Total fees including funding: 1,298 sats.

Failure and recovery

Recorded inputs are already spent. Use new owned inputs and addresses; retain the PSBT and signed artifact. Check status after any uncertain broadcast.

Open experiment · Reproduction evidence · Primary source

Fee rescue: RBF and CPFP

Compare a rejected replacement, an accepted fee bump, a parent-child package, and a confirmed parent.

Isolated regtest recordingBrowser replayVerified 2026-09-11

Prerequisites

Browser replay; Bitcoin Core 29.0.0 validation

Test-sat budget

No coins needed. Recorded parent fee 284 sats; package fee 2,008 sats.

Failure and recovery

Changed parameters are unvalidated. A confirmed parent cannot be replaced; select a recorded case to restore its evidence.

Open experiment · Reproduction evidence · Primary source

Time capsule, multisig, and hashlock

Exercise relative block locks, one versus two signatures, and a key-plus-preimage claim with delayed refund.

Isolated regtest recordingBrowser replayVerified 2026-09-11

Prerequisites

Browser replay; Bitcoin Core 29.0.0 validation

Test-sat budget

No coins needed. Each recorded funding output holds 10,000 local test sats.

Failure and recovery

Early spends fail. The timeout opens a refund path but does not close the claim path. Never fund public demo keys.

Open experiment · Reproduction evidence · Primary source

BLAKE2b fork rehearsal

Replay ordinary and unified signatures against two validators forked from identical local history.

Two isolated regtest branchesBrowser replayVerified 2026-09-11

Prerequisites

Browser replay; Core 29.0.0 and Knots 29.4.1

Test-sat budget

No coins needed. Each recorded spend uses a 100,000-sat local test output.

Failure and recovery

Ordinary signatures remain replayable. Protected signatures are opt-in. These test overrides are not public network settings.

Open experiment · Reproduction evidence · Primary source

UTXO split and consolidation

Construct native SegWit PSBTs with an exact recipient, change, and fee ledger.

Offline constructionBrowser replayVerified 2026-09-11

Prerequisites

Browser; bitcoinjs-lib 7.0.2

Test-sat budget

No coins needed. Reference split: 10,000 input sats, 406 proposed fee sats.

Failure and recovery

Examples cannot be broadcast. Keep your exported PSBT and use a dedicated Signet signer for your own inputs.

Open experiment · Reproduction evidence · Primary source

Missing UTXO data

Compare a parseable PSBT with unknown input values against its corrected counterpart.

Offline fixtureBrowser replayVerified 2026-09-11

Prerequisites

Browser; bitcoinjs-lib 7.0.2

Test-sat budget

No coins needed.

Failure and recovery

Select Previous output supplied to compare metadata. A file does not prove that an input remains unspent.

Open experiment · Reproduction evidence · Primary source

PSBT signing stages

Compare unsigned, partially signed, finalized, and extracted transaction data.

Offline fixtureBrowser replayVerified 2026-09-11

Prerequisites

Browser; bitcoinjs-lib 7.0.2

Test-sat budget

No coins needed. Reference PSBT fee: 500 sats.

Failure and recovery

Signature presence is not validity. Restore a prepared example after inspecting a custom file.

Open experiment · Reproduction evidence · Primary source

Taproot Assets anchor and proof

Separate the 1,000-sat Bitcoin anchor from the companion record's 1,500 asset units.

Recorded regtest vectorBrowser replayVerified 2026-09-11

Prerequisites

Browser; pinned Lightning Labs test vector

Test-sat budget

No coins needed. No asset issuance performed by this site.

Failure and recovery

The proof is downloadable reference data. Asset commitments, history, and ownership are not verified by the Doctor.

Open experiment · Reproduction evidence · Primary source

Reproduce the Core validation

Have Core sign a funded split, compare parser results, and reject an overspend on a fresh local chain.

Isolated regtestLocal node requiredVerified 2026-09-11

Prerequisites

Node.js 22.12+; Bitcoin Core 29.0.0; macOS ARM64 harness

Test-sat budget

Fresh local test coins only. Accepted Workshop spend is not broadcast.

Failure and recovery

The harness disables networking and removes its temporary wallet after stopping the node. Never point it at an existing datadir.

Open experiment · Reproduction evidence · Primary source

Prepared outpoints are not spendable. Real-input Workshop mode requires your own verified P2WPKH UTXOs and a separate Signet signer. A shared address format does not establish the network.