The record so far

Solved Bitcoin puzzles

Is the Bitcoin puzzle solved? Partially. 82 of the 160 puzzles have fallen, each one a documented data point on how far real hardware and clever math have reached. Every solved puzzle's private key is now public knowledge, listed below.

Solved

Remaining

Brute force record

70 bits

Kangaroo record

130 bits

Every solved puzzle

Most recent solve: puzzle 69 on Apr 30, 2025. Click any puzzle for its full page with the address, exact range and the revealed key in hex and WIF.

Puzzle	Solved	Private key (hex)	Method
#1	Jan 15, 2015	1	Brute force
#2	Jan 15, 2015	3	Brute force
#3	Jan 15, 2015	7	Brute force
#4	Jan 15, 2015	8	Brute force
#5	Jan 15, 2015	15	Brute force
#6	Jan 15, 2015	31	Brute force
#7	Jan 15, 2015	4c	Brute force
#8	Jan 15, 2015	e0	Brute force
#9	Jan 15, 2015	1d3	Brute force
#10	Jan 15, 2015	202	Brute force
#11	Jan 15, 2015	483	Brute force
#12	Jan 15, 2015	a7b	Brute force
#13	Jan 15, 2015	1460	Brute force
#14	Jan 15, 2015	2930	Brute force
#15	Jan 15, 2015	68f3	Brute force
#16	Jan 15, 2015	c936	Brute force
#17	Jan 15, 2015	1764f	Brute force
#18	Jan 15, 2015	3080d	Brute force
#19	Jan 15, 2015	5749f	Brute force
#20	Jan 15, 2015	d2c55	Brute force
#21	Jan 15, 2015	1ba534	Brute force
#22	Jan 15, 2015	2de40f	Brute force
#23	Jan 15, 2015	556e52	Brute force
#24	Jan 15, 2015	dc2a04	Brute force
#25	Jan 15, 2015	1fa5ee5	Brute force
#26	Jan 15, 2015	340326e	Brute force
#27	Jan 15, 2015	6ac3875	Brute force
#28	Jan 16, 2015	d916ce8	Brute force
#29	Jan 16, 2015	17e2551e	Brute force
#30	Jan 16, 2015	3d94cd64	Brute force
#31	Jan 16, 2015	7d4fe747	Brute force
#32	Jan 16, 2015	b862a62e	Brute force
#33	Jan 17, 2015	1a96ca8d8	Brute force
#34	Jan 17, 2015	34a65911d	Brute force
#35	Jan 17, 2015	4aed21170	Brute force
#36	Jan 18, 2015	9de820a7c	Brute force
#37	Jan 19, 2015	1757756a93	Brute force
#38	Jan 21, 2015	22382facd0	Brute force
#39	Jan 30, 2015	4b5f8303e9	Brute force
#40	Jan 30, 2015	e9ae4933d6	Brute force
#41	Jan 30, 2015	153869acc5b	Brute force
#42	Jan 30, 2015	2a221c58d8f	Brute force
#43	Jan 30, 2015	6bd3b27c591	Brute force
#44	Jan 30, 2015	e02b35a358f	Brute force
#45	Jan 30, 2015	122fca143c05	Brute force
#46	Sep 1, 2015	2ec18388d544	Brute force
#47	Sep 1, 2015	6cd610b53cba	Brute force
#48	Sep 1, 2015	ade6d7ce3b9b	Brute force
#49	Sep 1, 2015	174176b015f4d	Brute force
#50	Apr 5, 2017	22bd43c2e9354	Brute force
#51	Apr 21, 2017	75070a1a009d4	Brute force
#52	Sep 4, 2017	efae164cb9e3c	Brute force
#53	Sep 4, 2017	180788e47e326c	Brute force
#54	Nov 16, 2017	236fb6d5ad1f43	Brute force
#55	May 29, 2018	6abe1f9b67e114	Brute force
#56	Sep 8, 2018	9d18b63ac4ffdf	Brute force
#57	Nov 8, 2018	1eb25c90795d61c	Brute force
#58	Dec 3, 2018	2c675b852189a21	Brute force
#59	Feb 11, 2019	7496cbb87cab44f	Brute force
#60	Feb 17, 2019	fc07a1825367bbe	Brute force
#61	May 11, 2019	13c96a3742f64906	Brute force
#62	Sep 8, 2019	363d541eb611abee	Brute force
#63	Jun 7, 2019	7cce5efdaccf6808	Brute force
#64	Sep 9, 2022	f7051f27b09112d4	Brute force
#65	Jun 7, 2019	1a838b13505b26867	Brute force
#66	Sep 12, 2024	2832ed74f2b5e35ee	Brute force
#67	Feb 21, 2025	730fc235c1942c1ae	Brute force
#68	Apr 6, 2025	bebb3940cd0fc1491	Brute force
#69	Apr 30, 2025	101d83275fb2bc7e0c	Brute force
#70	Jun 9, 2019	349b84b6431a6c4ef1	Brute force
#75	Jun 10, 2019	4c5ce114686a1336e07	Kangaroo
#80	Jun 11, 2019	ea1a5c66dcc11b5ad180	Kangaroo
#85	Jun 17, 2019	11720c4f018d51b8cebb...	Kangaroo
#90	Jul 1, 2019	2ce00bb2136a445c71e8...	Kangaroo
#95	Jul 6, 2019	527a792b183c7f64a0e8...	Kangaroo
#100	Jul 8, 2019	af55fc59c335c8ec67ed...	Kangaroo
#105	Sep 23, 2019	16f14fc2054cd87ee639...	Kangaroo
#110	May 30, 2020	35c0d7234df7deb0f20c...	Kangaroo
#115	Jun 16, 2020	60f4d11574f5deee4996...	Kangaroo
#120	Feb 27, 2023	b10f22572c497a836ea1...	Kangaroo
#125	Jul 9, 2023	1c533b6bb7f0804e0996...	Kangaroo
#130	Sep 23, 2024	33e7665705359f04f28b...	Kangaroo

How they fell

Two very different techniques account for every solve. Puzzles up to 70 bits fell to raw GPU brute force: tools like BitCrack and KeyHunt walking the keyspace until a derived address matched. The difficulty doubles with every bit, which is why the frontier moves so slowly, and why each new brute force record takes larger farms and longer runs than the one before.

The higher solves, every fifth puzzle from 75 to 130, were different. Their public keys were deliberately exposed by the creator, which unlocked Pollard's kangaroo algorithm: a method that finds the key in roughly the square root of the range. Puzzle 130 was cracked with about 2⁶⁵ operations instead of 2¹³⁰, still a massive computation, but one that fits in the real world.

The revealed keys are more than trivia. Anyone can verify that each key really produces its address, and the solved series calibrates exactly how hard the remaining puzzles are. You can check any revealed key yourself with the private key to address tool, or convert it between formats with hex to WIF.