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@github-actions github-actions released this 30 Oct 01:18
v1.2-DIMEBAG
f354b94

Release v1.2-DIMEBAG of midwimble.

Dimebag, after Pantera's "Walk", is released alongside midstate's v6.0.0
"Anselmo". It is a hard fork. From block 86,400, midwimble's proof of work
is Midstate Walk, the one midstate takes at its block 420,000.

Every node must upgrade before block 86,400, which is expected around
mid-December 2026, a few hours before midstate's switch. A node on an earlier
release rejects the first Walk block.

What changes

  • The Walk: blocks from 86,400 carry a Midstate Walk proof, natively and
    merged. The Walk code is shared with midstate (src/core/walk.rs) and
    reproduces its golden vectors.
  • Sync: blocks below 86,400 keep the BLAKE3 chain, so syncing from genesis
    works as before.
  • Difficulty: at the switch the target eases 8× (WALK_TARGET_SHIFT = 3),
    and ASERT takes over from there.
  • Midstate's switch is mirrored: relayed midstate headers and anchor
    evidence from midstate block 420,000 on are checked as Walk proofs, with
    midstate's 8× reset. MIDSTATE_WALK_ACTIVATION_HEIGHT and
    MIDSTATE_WALK_TARGET_SHIFT must match midstate v6.0.0.

Mining

  • Merged mining pauses between the two switches. A merged block counts
    only if it carries the proof of work its height asks for. From midwimble's
    block 86,400 until midstate reaches 420,000, a few hours later, the merge
    pool mines midstate alone and bonded miners carry midwimble. merge-mine and
    the pool resume merging by themselves once both chains take the Walk.
  • Algorithm by height: midwimble node --mine-to, merge-mine, and the
    pool and its spot checks all follow the height.
  • GPU backend: --backend gpu mines the Walk on the CPU, because the GPU
    kernel is the BLAKE3 chain's.
  • Templates: /mining/template and /merge/job carry pow
    ("blake3-chain" or "walk").
  • Hardware: a Raspberry Pi 5 is the smallest machine that mines the Walk
    well, because it has AES instructions. Pi 3 and Pi 4 builds still run full
    nodes.

Also

  • Header sync requires consecutive heights, and checks each header's proof of
    work with the algorithm for its height.
  • Orphans near either switch are accepted with either algorithm until they can
    be placed.

Built --release --features webrtc,gpu from commit f354b94b8576ca255829e07cede2f3ca59dd0185. Each archive holds one midwimble binary — node, wallet, pool, merged miner and anchoring — with LICENSE and README.

Download Platform
midwimble-v1.2-DIMEBAG-x86_64-unknown-linux-gnu.tar.gz Linux x86-64
midwimble-v1.2-DIMEBAG-aarch64-unknown-linux-gnu.tar.gz Linux ARM64 — Raspberry Pi 3 / 4 / 5 on a 64-bit OS
midwimble-v1.2-DIMEBAG-x86_64-apple-darwin.tar.gz macOS (Intel)
midwimble-v1.2-DIMEBAG-aarch64-apple-darwin.tar.gz macOS (Apple Silicon)
midwimble-v1.2-DIMEBAG-x86_64-pc-windows-msvc.zip Windows x64
midwimble-v1.2-DIMEBAG-aarch64-pc-windows-msvc.zip Windows on ARM

Verify with sha256sum -c SHA256SUMS.txt (checksums attached).

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