Qvanta CryptoQvanta Crypto
Open targets

77 open puzzles, 903 BTC unclaimed

Ordered from easiest to hardest. Puzzles marked “public key exposed” can be attacked with Pollard’s kangaroo, so #140 is comparable in difficulty to a plain search of a much smaller range.

71

Puzzle #71 · 7.1 BTC

Private key between 270 and 271, up to 270 keys to search.

1PWo3JeB9jrGwfHDNpdGK54CRas7fsVzXU · range 400000000000000000 to 7fffffffffffffffff
Open
72

Puzzle #72 · 7.2 BTC

Private key between 271 and 272, up to 271 keys to search.

1JTK7s9YVYywfm5XUH7RNhHJH1LshCaRFR · range 800000000000000000 to ffffffffffffffffff
Open
73

Puzzle #73 · 7.3 BTC

Private key between 272 and 273, up to 272 keys to search.

12VVRNPi4SJqUTsp6FmqDqY5sGosDtysn4 · range 1000000000000000000 to 1ffffffffffffffffff
Open
74

Puzzle #74 · 7.4 BTC

Private key between 273 and 274, up to 273 keys to search.

1FWGcVDK3JGzCC3WtkYetULPszMaK2Jksv · range 2000000000000000000 to 3ffffffffffffffffff
Open
76

Puzzle #76 · 7.6 BTC

Private key between 275 and 276, up to 275 keys to search.

1DJh2eHFYQfACPmrvpyWc8MSTYKh7w9eRF · range 8000000000000000000 to fffffffffffffffffff
Open
77

Puzzle #77 · 7.7 BTC

Private key between 276 and 277, up to 276 keys to search.

1Bxk4CQdqL9p22JEtDfdXMsng1XacifUtE · range 10000000000000000000 to 1fffffffffffffffffff
Open
78

Puzzle #78 · 7.8 BTC

Private key between 277 and 278, up to 277 keys to search.

15qF6X51huDjqTmF9BJgxXdt1xcj46Jmhb · range 20000000000000000000 to 3fffffffffffffffffff
Open
79

Puzzle #79 · 7.9 BTC

Private key between 278 and 279, up to 278 keys to search.

1ARk8HWJMn8js8tQmGUJeQHjSE7KRkn2t8 · range 40000000000000000000 to 7fffffffffffffffffff
Open
81

Puzzle #81 · 8.1 BTC

Private key between 280 and 281, up to 280 keys to search.

15qsCm78whspNQFydGJQk5rexzxTQopnHZ · range 100000000000000000000 to 1ffffffffffffffffffff
Open
82

Puzzle #82 · 8.2 BTC

Private key between 281 and 282, up to 281 keys to search.

13zYrYhhJxp6Ui1VV7pqa5WDhNWM45ARAC · range 200000000000000000000 to 3ffffffffffffffffffff
Open
83

Puzzle #83 · 8.3 BTC

Private key between 282 and 283, up to 282 keys to search.

14MdEb4eFcT3MVG5sPFG4jGLuHJSnt1Dk2 · range 400000000000000000000 to 7ffffffffffffffffffff
Open
84

Puzzle #84 · 8.4 BTC

Private key between 283 and 284, up to 283 keys to search.

1CMq3SvFcVEcpLMuuH8PUcNiqsK1oicG2D · range 800000000000000000000 to fffffffffffffffffffff
Open
86

Puzzle #86 · 8.6 BTC

Private key between 285 and 286, up to 285 keys to search.

1K3x5L6G57Y494fDqBfrojD28UJv4s5JcK · range 2000000000000000000000 to 3fffffffffffffffffffff
Open
87

Puzzle #87 · 8.7 BTC

Private key between 286 and 287, up to 286 keys to search.

1PxH3K1Shdjb7gSEoTX7UPDZ6SH4qGPrvq · range 4000000000000000000000 to 7fffffffffffffffffffff
Open
88

Puzzle #88 · 8.8 BTC

Private key between 287 and 288, up to 287 keys to search.

16AbnZjZZipwHMkYKBSfswGWKDmXHjEpSf · range 8000000000000000000000 to ffffffffffffffffffffff
Open
89

Puzzle #89 · 8.9 BTC

Private key between 288 and 289, up to 288 keys to search.

19QciEHbGVNY4hrhfKXmcBBCrJSBZ6TaVt · range 10000000000000000000000 to 1ffffffffffffffffffffff
Open
91

Puzzle #91 · 9.1 BTC

Private key between 290 and 291, up to 290 keys to search.

1EzVHtmbN4fs4MiNk3ppEnKKhsmXYJ4s74 · range 40000000000000000000000 to 7ffffffffffffffffffffff
Open
92

Puzzle #92 · 9.2 BTC

Private key between 291 and 292, up to 291 keys to search.

1AE8NzzgKE7Yhz7BWtAcAAxiFMbPo82NB5 · range 80000000000000000000000 to fffffffffffffffffffffff
Open
93

Puzzle #93 · 9.3 BTC

Private key between 292 and 293, up to 292 keys to search.

17Q7tuG2JwFFU9rXVj3uZqRtioH3mx2Jad · range 100000000000000000000000 to 1fffffffffffffffffffffff
Open
94

Puzzle #94 · 9.4 BTC

Private key between 293 and 294, up to 293 keys to search.

1K6xGMUbs6ZTXBnhw1pippqwK6wjBWtNpL · range 200000000000000000000000 to 3fffffffffffffffffffffff
Open
96

Puzzle #96 · 9.6 BTC

Private key between 295 and 296, up to 295 keys to search.

15ANYzzCp5BFHcCnVFzXqyibpzgPLWaD8b · range 800000000000000000000000 to ffffffffffffffffffffffff
Open
97

Puzzle #97 · 9.7 BTC

Private key between 296 and 297, up to 296 keys to search.

18ywPwj39nGjqBrQJSzZVq2izR12MDpDr8 · range 1000000000000000000000000 to 1ffffffffffffffffffffffff
Open
98

Puzzle #98 · 9.8 BTC

Private key between 297 and 298, up to 297 keys to search.

1CaBVPrwUxbQYYswu32w7Mj4HR4maNoJSX · range 2000000000000000000000000 to 3ffffffffffffffffffffffff
Open
99

Puzzle #99 · 9.9 BTC

Private key between 298 and 299, up to 298 keys to search.

1JWnE6p6UN7ZJBN7TtcbNDoRcjFtuDWoNL · range 4000000000000000000000000 to 7ffffffffffffffffffffffff
Open
101

Puzzle #101 · 10.1 BTC

Private key between 2100 and 2101, up to 2100 keys to search.

1CKCVdbDJasYmhswB6HKZHEAnNaDpK7W4n · range 10000000000000000000000000 to 1fffffffffffffffffffffffff
Open
102

Puzzle #102 · 10.2 BTC

Private key between 2101 and 2102, up to 2101 keys to search.

1PXv28YxmYMaB8zxrKeZBW8dt2HK7RkRPX · range 20000000000000000000000000 to 3fffffffffffffffffffffffff
Open
103

Puzzle #103 · 10.3 BTC

Private key between 2102 and 2103, up to 2102 keys to search.

1AcAmB6jmtU6AiEcXkmiNE9TNVPsj9DULf · range 40000000000000000000000000 to 7fffffffffffffffffffffffff
Open
104

Puzzle #104 · 10.4 BTC

Private key between 2103 and 2104, up to 2103 keys to search.

1EQJvpsmhazYCcKX5Au6AZmZKRnzarMVZu · range 80000000000000000000000000 to ffffffffffffffffffffffffff
Open
106

Puzzle #106 · 10.6 BTC

Private key between 2105 and 2106, up to 2105 keys to search.

18KsfuHuzQaBTNLASyj15hy4LuqPUo1FNB · range 200000000000000000000000000 to 3ffffffffffffffffffffffffff
Open
107

Puzzle #107 · 10.7 BTC

Private key between 2106 and 2107, up to 2106 keys to search.

15EJFC5ZTs9nhsdvSUeBXjLAuYq3SWaxTc · range 400000000000000000000000000 to 7ffffffffffffffffffffffffff
Open
108

Puzzle #108 · 10.8 BTC

Private key between 2107 and 2108, up to 2107 keys to search.

1HB1iKUqeffnVsvQsbpC6dNi1XKbyNuqao · range 800000000000000000000000000 to fffffffffffffffffffffffffff
Open
109

Puzzle #109 · 10.9 BTC

Private key between 2108 and 2109, up to 2108 keys to search.

1GvgAXVCbA8FBjXfWiAms4ytFeJcKsoyhL · range 1000000000000000000000000000 to 1fffffffffffffffffffffffffff
Open
111

Puzzle #111 · 11.1 BTC

Private key between 2110 and 2111, up to 2110 keys to search.

1824ZJQ7nKJ9QFTRBqn7z7dHV5EGpzUpH3 · range 4000000000000000000000000000 to 7fffffffffffffffffffffffffff
Open
112

Puzzle #112 · 11.2 BTC

Private key between 2111 and 2112, up to 2111 keys to search.

18A7NA9FTsnJxWgkoFfPAFbQzuQxpRtCos · range 8000000000000000000000000000 to ffffffffffffffffffffffffffff
Open
113

Puzzle #113 · 11.3 BTC

Private key between 2112 and 2113, up to 2112 keys to search.

1NeGn21dUDDeqFQ63xb2SpgUuXuBLA4WT4 · range 10000000000000000000000000000 to 1ffffffffffffffffffffffffffff
Open
114

Puzzle #114 · 11.4 BTC

Private key between 2113 and 2114, up to 2113 keys to search.

174SNxfqpdMGYy5YQcfLbSTK3MRNZEePoy · range 20000000000000000000000000000 to 3ffffffffffffffffffffffffffff
Open
116

Puzzle #116 · 11.6 BTC

Private key between 2115 and 2116, up to 2115 keys to search.

1MnJ6hdhvK37VLmqcdEwqC3iFxyWH2PHUV · range 80000000000000000000000000000 to fffffffffffffffffffffffffffff
Open
117

Puzzle #117 · 11.7 BTC

Private key between 2116 and 2117, up to 2116 keys to search.

1KNRfGWw7Q9Rmwsc6NT5zsdvEb9M2Wkj5Z · range 100000000000000000000000000000 to 1fffffffffffffffffffffffffffff
Open
118

Puzzle #118 · 11.8 BTC

Private key between 2117 and 2118, up to 2117 keys to search.

1PJZPzvGX19a7twf5HyD2VvNiPdHLzm9F6 · range 200000000000000000000000000000 to 3fffffffffffffffffffffffffffff
Open
119

Puzzle #119 · 11.9 BTC

Private key between 2118 and 2119, up to 2118 keys to search.

1GuBBhf61rnvRe4K8zu8vdQB3kHzwFqSy7 · range 400000000000000000000000000000 to 7fffffffffffffffffffffffffffff
Open
121

Puzzle #121 · 12.1 BTC

Private key between 2120 and 2121, up to 2120 keys to search.

1GDSuiThEV64c166LUFC9uDcVdGjqkxKyh · range 1000000000000000000000000000000 to 1ffffffffffffffffffffffffffffff
Open
122

Puzzle #122 · 12.2 BTC

Private key between 2121 and 2122, up to 2121 keys to search.

1Me3ASYt5JCTAK2XaC32RMeH34PdprrfDx · range 2000000000000000000000000000000 to 3ffffffffffffffffffffffffffffff
Open
123

Puzzle #123 · 12.3 BTC

Private key between 2122 and 2123, up to 2122 keys to search.

1CdufMQL892A69KXgv6UNBD17ywWqYpKut · range 4000000000000000000000000000000 to 7ffffffffffffffffffffffffffffff
Open
124

Puzzle #124 · 12.4 BTC

Private key between 2123 and 2124, up to 2123 keys to search.

1BkkGsX9ZM6iwL3zbqs7HWBV7SvosR6m8N · range 8000000000000000000000000000000 to fffffffffffffffffffffffffffffff
Open
126

Puzzle #126 · 12.6 BTC

Private key between 2125 and 2126, up to 2125 keys to search.

1AWCLZAjKbV1P7AHvaPNCKiB7ZWVDMxFiz · range 20000000000000000000000000000000 to 3fffffffffffffffffffffffffffffff
Open
127

Puzzle #127 · 12.7 BTC

Private key between 2126 and 2127, up to 2126 keys to search.

1G6EFyBRU86sThN3SSt3GrHu1sA7w7nzi4 · range 40000000000000000000000000000000 to 7fffffffffffffffffffffffffffffff
Open
128

Puzzle #128 · 12.8 BTC

Private key between 2127 and 2128, up to 2127 keys to search.

1MZ2L1gFrCtkkn6DnTT2e4PFUTHw9gNwaj · range 80000000000000000000000000000000 to ffffffffffffffffffffffffffffffff
Open
129

Puzzle #129 · 12.9 BTC

Private key between 2128 and 2129, up to 2128 keys to search.

1Hz3uv3nNZzBVMXLGadCucgjiCs5W9vaGz · range 100000000000000000000000000000000 to 1ffffffffffffffffffffffffffffffff
Open
131

Puzzle #131 · 13.1 BTC

Private key between 2130 and 2131, up to 2130 keys to search.

16zRPnT8znwq42q7XeMkZUhb1bKqgRogyy · range 400000000000000000000000000000000 to 7ffffffffffffffffffffffffffffffff
Open
132

Puzzle #132 · 13.2 BTC

Private key between 2131 and 2132, up to 2131 keys to search.

1KrU4dHE5WrW8rhWDsTRjR21r8t3dsrS3R · range 800000000000000000000000000000000 to fffffffffffffffffffffffffffffffff
Open
133

Puzzle #133 · 13.3 BTC

Private key between 2132 and 2133, up to 2132 keys to search.

17uDfp5r4n441xkgLFmhNoSW1KWp6xVLD · range 1000000000000000000000000000000000 to 1fffffffffffffffffffffffffffffffff
Open
134

Puzzle #134 · 13.4 BTC

Private key between 2133 and 2134, up to 2133 keys to search.

13A3JrvXmvg5w9XGvyyR4JEJqiLz8ZySY3 · range 2000000000000000000000000000000000 to 3fffffffffffffffffffffffffffffffff
Open
136

Puzzle #136 · 13.6 BTC

Private key between 2135 and 2136, up to 2135 keys to search.

1UDHPdovvR985NrWSkdWQDEQ1xuRiTALq · range 8000000000000000000000000000000000 to ffffffffffffffffffffffffffffffffff
Open
137

Puzzle #137 · 13.7 BTC

Private key between 2136 and 2137, up to 2136 keys to search.

15nf31J46iLuK1ZkTnqHo7WgN5cARFK3RA · range 10000000000000000000000000000000000 to 1ffffffffffffffffffffffffffffffffff
Open
138

Puzzle #138 · 13.8 BTC

Private key between 2137 and 2138, up to 2137 keys to search.

1Ab4vzG6wEQBDNQM1B2bvUz4fqXXdFk2WT · range 20000000000000000000000000000000000 to 3ffffffffffffffffffffffffffffffffff
Open
139

Puzzle #139 · 13.9 BTC

Private key between 2138 and 2139, up to 2138 keys to search.

1Fz63c775VV9fNyj25d9Xfw3YHE6sKCxbt · range 40000000000000000000000000000000000 to 7ffffffffffffffffffffffffffffffffff
Open
140

Puzzle #140 · 14 BTC

Private key between 2139 and 2140, about 270 kangaroo steps with the exposed public key.

1QKBaU6WAeycb3DbKbLBkX7vJiaS8r42Xo · range 80000000000000000000000000000000000 to fffffffffffffffffffffffffffffffffff
Open, public key exposed
141

Puzzle #141 · 14.1 BTC

Private key between 2140 and 2141, up to 2140 keys to search.

1CD91Vm97mLQvXhrnoMChhJx4TP9MaQkJo · range 100000000000000000000000000000000000 to 1fffffffffffffffffffffffffffffffffff
Open
142

Puzzle #142 · 14.2 BTC

Private key between 2141 and 2142, up to 2141 keys to search.

15MnK2jXPqTMURX4xC3h4mAZxyCcaWWEDD · range 200000000000000000000000000000000000 to 3fffffffffffffffffffffffffffffffffff
Open
143

Puzzle #143 · 14.3 BTC

Private key between 2142 and 2143, up to 2142 keys to search.

13N66gCzWWHEZBxhVxG18P8wyjEWF9Yoi1 · range 400000000000000000000000000000000000 to 7fffffffffffffffffffffffffffffffffff
Open
144

Puzzle #144 · 14.4 BTC

Private key between 2143 and 2144, up to 2143 keys to search.

1NevxKDYuDcCh1ZMMi6ftmWwGrZKC6j7Ux · range 800000000000000000000000000000000000 to ffffffffffffffffffffffffffffffffffff
Open
145

Puzzle #145 · 14.5 BTC

Private key between 2144 and 2145, about 272 kangaroo steps with the exposed public key.

19GpszRNUej5yYqxXoLnbZWKew3KdVLkXg · range 1000000000000000000000000000000000000 to 1ffffffffffffffffffffffffffffffffffff
Open, public key exposed
146

Puzzle #146 · 14.6 BTC

Private key between 2145 and 2146, up to 2145 keys to search.

1M7ipcdYHey2Y5RZM34MBbpugghmjaV89P · range 2000000000000000000000000000000000000 to 3ffffffffffffffffffffffffffffffffffff
Open
147

Puzzle #147 · 14.7 BTC

Private key between 2146 and 2147, up to 2146 keys to search.

18aNhurEAJsw6BAgtANpexk5ob1aGTwSeL · range 4000000000000000000000000000000000000 to 7ffffffffffffffffffffffffffffffffffff
Open
148

Puzzle #148 · 14.8 BTC

Private key between 2147 and 2148, up to 2147 keys to search.

1FwZXt6EpRT7Fkndzv6K4b4DFoT4trbMrV · range 8000000000000000000000000000000000000 to fffffffffffffffffffffffffffffffffffff
Open
149

Puzzle #149 · 14.9 BTC

Private key between 2148 and 2149, up to 2148 keys to search.

1CXvTzR6qv8wJ7eprzUKeWxyGcHwDYP1i2 · range 10000000000000000000000000000000000000 to 1fffffffffffffffffffffffffffffffffffff
Open
150

Puzzle #150 · 15 BTC

Private key between 2149 and 2150, about 275 kangaroo steps with the exposed public key.

1MUJSJYtGPVGkBCTqGspnxyHahpt5Te8jy · range 20000000000000000000000000000000000000 to 3fffffffffffffffffffffffffffffffffffff
Open, public key exposed
151

Puzzle #151 · 15.1 BTC

Private key between 2150 and 2151, up to 2150 keys to search.

13Q84TNNvgcL3HJiqQPvyBb9m4hxjS3jkV · range 40000000000000000000000000000000000000 to 7fffffffffffffffffffffffffffffffffffff
Open
152

Puzzle #152 · 15.2 BTC

Private key between 2151 and 2152, up to 2151 keys to search.

1LuUHyrQr8PKSvbcY1v1PiuGuqFjWpDumN · range 80000000000000000000000000000000000000 to ffffffffffffffffffffffffffffffffffffff
Open
153

Puzzle #153 · 15.3 BTC

Private key between 2152 and 2153, up to 2152 keys to search.

18192XpzzdDi2K11QVHR7td2HcPS6Qs5vg · range 100000000000000000000000000000000000000 to 1ffffffffffffffffffffffffffffffffffffff
Open
154

Puzzle #154 · 15.4 BTC

Private key between 2153 and 2154, up to 2153 keys to search.

1NgVmsCCJaKLzGyKLFJfVequnFW9ZvnMLN · range 200000000000000000000000000000000000000 to 3ffffffffffffffffffffffffffffffffffffff
Open
155

Puzzle #155 · 15.5 BTC

Private key between 2154 and 2155, about 277 kangaroo steps with the exposed public key.

1AoeP37TmHdFh8uN72fu9AqgtLrUwcv2wJ · range 400000000000000000000000000000000000000 to 7ffffffffffffffffffffffffffffffffffffff
Open, public key exposed
156

Puzzle #156 · 15.6 BTC

Private key between 2155 and 2156, up to 2155 keys to search.

1FTpAbQa4h8trvhQXjXnmNhqdiGBd1oraE · range 800000000000000000000000000000000000000 to fffffffffffffffffffffffffffffffffffffff
Open
157

Puzzle #157 · 15.7 BTC

Private key between 2156 and 2157, up to 2156 keys to search.

14JHoRAdmJg3XR4RjMDh6Wed6ft6hzbQe9 · range 1000000000000000000000000000000000000000 to 1fffffffffffffffffffffffffffffffffffffff
Open
158

Puzzle #158 · 15.8 BTC

Private key between 2157 and 2158, up to 2157 keys to search.

19z6waranEf8CcP8FqNgdwUe1QRxvUNKBG · range 2000000000000000000000000000000000000000 to 3fffffffffffffffffffffffffffffffffffffff
Open
159

Puzzle #159 · 15.9 BTC

Private key between 2158 and 2159, up to 2158 keys to search.

14u4nA5sugaswb6SZgn5av2vuChdMnD9E5 · range 4000000000000000000000000000000000000000 to 7fffffffffffffffffffffffffffffffffffffff
Open
160

Puzzle #160 · 16 BTC

Private key between 2159 and 2160, about 280 kangaroo steps with the exposed public key.

1NBC8uXJy1GiJ6drkiZa1WuKn51ps7EPTv · range 8000000000000000000000000000000000000000 to ffffffffffffffffffffffffffffffffffffffff
Open, public key exposed

Sources

Puzzle data: privatekeys.pw, “~1000 BTC Bitcoin Challenge” and the Bitcoin Puzzle Directory, snapshot of 2026-11-13.
Original puzzle description by its creator, saatoshi_rising, on BitcoinTalk.
Prizes for open puzzles reflect the 2023-04-16 top-up, after which each unsolved puzzle n holds n ÷ 10 BTC.