Every tool for cracking Bitcoin puzzles, from CPU scanners to GPU kangaroo engines.
The right tool depends on whether the puzzle's public key is known. Address-only puzzles require brute-force scanning. Puzzles with revealed public keys can be attacked with kangaroo/BSGS algorithms that are exponentially faster.
Scan every key in the range, compute the Bitcoin address, compare against the target. Puzzle N contains 2^(N-1) candidate keys, which is infeasible to enumerate above the lowest remaining ranges.
Best for: Puzzles 71–74 (lowest unsolved, no known public key)
When the public key is revealed, Pollard's kangaroo and Baby-step Giant-step need roughly square-root work over a bounded interval. Puzzle #135 was spent in July 2026; five higher known-public-key targets remain.
Best for: Puzzles 140, 145, 150, 155, 160 (public keys known)
Conductor CLI and guided TUI for coordinated lottery-mode search. Claims bounded key ranges (tickets), logs to a shared ledger, supports detached GPU sessions.
Type: Orchestration
Engine: Wraps PZL-Roo and PZL-Hunter
Link: GitHub → (requires read-scoped token)
Turbo-only CUDA kangaroo engine based on RCKangaroo v4 SOTA v2, with embedded verified cubins for sm_89/sm_120, strict GPU rejection, parser-safe output, and exact-state PZLCKPT2 resume.
Type: GPU kangaroo
Best for: Remaining known-public-key puzzles #140–#160
Verified: 3.124 GKeys/s median on RTX 4070 Laptop (sm_89); real sm_120 validation pending
Link: GitHub → (requires read-scoped token)
GPU scanner engine for address-only puzzles. Brute-force address matching with CUDA, designed for ledger-backed no-repeat coverage.
Type: GPU brute force
Best for: Puzzles 71–74 (no known public key)
Link: GitHub → (requires read-scoped token)
CPU-based brute-force scanner and BSGS solver by AlbertoBSD. Supports compressed/uncompressed addresses, random and sequential modes, and BSGS for known public keys.
Type: CPU brute force + BSGS
Author: albertobsd
Link: GitHub →
GPU port of Keyhunt by Wandering Philosopher. CUDA-accelerated brute-force and BSGS for NVIDIA GPUs. Significantly faster than CPU version.
Type: GPU brute force + BSGS
Author: Wandering Philosopher
Status: Archived (use for reference)
Link: GitHub →
GPU Pollard's kangaroo implementation by JeanLucPons. A foundational reference for solving intervals with known public keys.
Type: GPU kangaroo
Author: JeanLucPons
Limit: Up to ~125-bit intervals
Link: GitHub →
Modified kangaroo by Etayson for puzzles 130+. Includes GPU BSGS, fraction kangaroo, fraction BSGS, and server clients for distributed solving. Required for puzzles above 125-bit.
Type: GPU kangaroo (modified)
Author: Etayson
Best for: Puzzles 130–160
Link: GitHub →
GPU address-only scanner. Brute-forces private keys and checks against a target Bitcoin address. Supports multiple GPUs and is popular for puzzle 71 scanning.
Type: GPU brute force
Link: GitHub →
Fast NVIDIA ECDLP solver by RetiredC. Version 4 introduced SOTA v2 and published architecture-specific assembly/cubins; it is the audited upstream for the unified PZL-Roo engine. RetiredCoder self-attributed the #135 solve alongside the July 2026 update.
Type: GPU kangaroo (v4 SOTA v2)
Author: RetiredC
Historical solves: #120, #125, #130, and self-attributed #135
License: GPLv3
Link: GitHub →
Don't own GPUs? Rent them by the hour. These are the most popular platforms for puzzle hunters.
GPU marketplace with hourly and spot listings. Prices are volatile: copy the current quote into LOTTERYPZL_USD_PER_GPU_HOUR instead of relying on a static table.
Best for: Cost-effective GPU rental, wide selection
Pay-per-hour: Yes, no commitment
Link: vast.ai →
GPU rental platform with crypto-native payment. Supports SSH access, hourly billing, and automatic deployment. Popular in the puzzle hunting community.
Best for: Crypto payments, European hosting
Pay-per-hour: Yes, CLORE token or crypto
Link: clore.ai →
Disclosure: The Vast.ai and Clore.ai links above are referral links. If you sign up through them, we may earn a small commission at no extra cost to you. This helps support the project. We only recommend platforms we genuinely use for puzzle hunting.
lotterypzl --detach to run
sessions that survive SSH disconnects. Never store private keys on rental instances — use
untrusted_computer mode if available. Wipe the instance after your session.