COMP7009 2025-26 Toychain Class

Leader Board:

Miner Pseudonym Number of Blocks Mined Maximum Difficulty
ImNotUmut4:) 1 33
unknownbeatumut 1 32
ImNotUmut3:) 1 30
Sherlock 1 28
EvilTwinAP8 1 28
EvilTwinAP4 1 27
ImNotUmut2:) 1 26
EvilTwinAP3 1 25
Umut3 1 24
Umut2 1 23
ImNotUmut:) 1 21
EvilTwinAP7 1 21
ImNotUmut1:) 1 21
EvilTwinAP6 1 20
EvilTwinAP5 1 20
Sam_Sepiol 6 17
Umut1 1 17
Umut 1 13
Terry 2 10
? 1 9
Lankymcdanky 3 9
EvilTwinAP2 1 8
jugbe 1 7
Dobby 2 6
HashRider 1 5
jake 1 5
unknown 1 5
EvilTwinAP 1 5

Note: The following characters are not admitted in the block (pseudonym or nonce): SPACE (ASCII 32), NUL (ASCII 0), \n, \r, \0, \v, \, \', ", &, <, > and CTRL+Z.

Submit a new block here:

Previous Hash
Miner Pseudonym (max 30 chars allowed)
Nonce

Compute SHA-256 hash here:

Text
Its SHA-256 hash

Block 1:

Hash of Previous Block (Block 0) Miner Pseudonym Nonce
Null Dobby 1
Insterted at: 2026-02-13 14:00:00
SHA-256 (Block 1) = 0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 with difficulty = 4

Block 2:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 Dobby 69
Insterted at: 2026-02-13 14:37:48
SHA-256 (Block 2) = 028ebcf5eb3f349566c187c5c23f84e74b1c87da9d7e8fd19497ee5fae778c99 with difficulty = 6

Block 3:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 Umut 13330
Insterted at: 2026-02-13 14:41:52
SHA-256 (Block 3) = 00077050ffa0f2d21dce3bf961c3296ebc158ae718b5472a9dfbdbd9a9146dcf with difficulty = 13

Block 4:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 jugbe 25144
Insterted at: 2026-02-13 14:44:18
SHA-256 (Block 4) = 01927a81e49ddcb70267dbc523dad8c160cff8bef14e4bf84dacd57a4b1df196 with difficulty = 7

Block 5:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 Umut1 51533
Insterted at: 2026-02-13 14:44:54
SHA-256 (Block 5) = 00005c77492c8f70e1d6747657dfec8ba49d05b764e2713996e1c6f3008bd2fb with difficulty = 17

Block 6:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 Umut2 1491125
Insterted at: 2026-02-13 14:45:58
SHA-256 (Block 6) = 000001d9f3ae2fca98f232221b4bb0151657a55f8ec84b559d67955da4e53f8b with difficulty = 23

Block 7:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 EvilTwinAP 1254699888
Insterted at: 2026-02-13 14:49:15
SHA-256 (Block 7) = 04282dee5dc34d235be431fdf380df12b63b1cc177c302fc304fd3a47fdd15ad with difficulty = 5

Block 8:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 Umut3 14300420
Insterted at: 2026-02-13 14:50:01
SHA-256 (Block 8) = 000000ad75b25d491166f9f6cddbb2cab9ef0b2d36a31b86c6d34eeddd2b059f with difficulty = 24

Block 9:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 unknown 40761
Insterted at: 2026-02-13 14:51:22
SHA-256 (Block 9) = 06646a8cb95113f6ea96a636746a6fc4b1ebcc908c1816c64490539145bbc26a with difficulty = 5

Block 10:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 jake 162
Insterted at: 2026-02-13 14:52:02
SHA-256 (Block 10) = 0745634432c4d42e7bea5a22dfedbfc66626c4e4a479e630606c3834e261bd2a with difficulty = 5

Block 11:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 ImNotUmut:) 25856
Insterted at: 2026-02-13 14:53:15
SHA-256 (Block 11) = 000005a607fb2665a98480202d4bcd4488a8eab9e9d7a1831f5e28edbb09080e with difficulty = 21

Block 12:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 EvilTwinAP2 8785244489
Insterted at: 2026-02-13 14:54:24
SHA-256 (Block 12) = 00a37eed2909253f089336d6dca58848b413998da8e8395ca97ebde7cf40c741 with difficulty = 8

Block 13:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 ImNotUmut1:) 412853
Insterted at: 2026-02-13 14:56:04
SHA-256 (Block 13) = 000004a76ba8538fce8d382fc17b6a2ecc47881e1cdb29d88cd3ae7aff941af2 with difficulty = 21

Block 14:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 ImNotUmut2:) 14956303
Insterted at: 2026-02-13 14:56:48
SHA-256 (Block 14) = 000000245adf1fe4ecc469e45ba2f130b756d25fb7286e060c37a0441bd7da95 with difficulty = 26

Block 15:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 HashRider 80
Insterted at: 2026-02-13 14:56:53
SHA-256 (Block 15) = 05ec3b918abc7560cd4c041ed92f99820f62f0b048fdad6d57e7027d0da5b759 with difficulty = 5

Block 16:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 ? 83335
Insterted at: 2026-02-13 15:01:22
SHA-256 (Block 16) = 007257229f0a6ca0a20e2e6a649c8b45bbe1b08f5f179ba7bf7f6fbc46aa1877 with difficulty = 9

Block 17:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 EvilTwinAP3 14667157
Insterted at: 2026-02-13 15:03:41
SHA-256 (Block 17) = 00000042aac1c3a6541c12764d41bf245a678ab46c5924c1ebafc93195567d65 with difficulty = 25

Block 18:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 EvilTwinAP4 532747
Insterted at: 2026-02-13 15:05:13
SHA-256 (Block 18) = 000000107faa5d427eb9ee3c21e51ed486b8dd3f2dee0313ef2bd37601ffd704 with difficulty = 27

Block 19:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 EvilTwinAP5 152128
Insterted at: 2026-02-13 15:07:34
SHA-256 (Block 19) = 00000af0873cad843905b2ffe5961e6681e9520d94c386d0bf8249521cc025ad with difficulty = 20

Block 20:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 EvilTwinAP6 792344
Insterted at: 2026-02-13 15:08:05
SHA-256 (Block 20) = 000009b20fbee2808170b653cb7a279f530049d010eb9f625406783259c5b0d9 with difficulty = 20

Block 21:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 EvilTwinAP7 7469889
Insterted at: 2026-02-13 15:08:59
SHA-256 (Block 21) = 0000046cf5c3ed6f82592bce77df67ed23248ac0cf257742bd171b945ba9a238 with difficulty = 21

Block 22:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 Lankymcdanky 1686
Insterted at: 2026-02-13 15:12:00
SHA-256 (Block 22) = 037e3acda8cd97bf6516af3291a96a28ed95b84dc584998e634c519c2d443d48 with difficulty = 6

Block 23:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 ImNotUmut3:) 226563809
Insterted at: 2026-02-13 15:13:32
SHA-256 (Block 23) = 00000003c46a898776dd1a21de3565db6c744722bd8e3a5757a0a6a3d06689f1 with difficulty = 30

Block 24:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 Terry 99
Insterted at: 2026-02-13 15:19:20
SHA-256 (Block 24) = 0161f63b112b630e77ae919bc63e270c98a1b96817dad13586975d910eeda42e with difficulty = 7

Block 25:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 EvilTwinAP8 10698275
Insterted at: 2026-02-13 15:21:15
SHA-256 (Block 25) = 0000000da9f74ae08a6f08a64fdde6ecdb4b0097876068b66d59f75c40eb69ca with difficulty = 28

Block 26:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 Sam_Sepiol 4500
Insterted at: 2026-02-13 15:29:18
SHA-256 (Block 26) = 06dddd29fbd4023d5c14c121f2739105d4139fc3177796a9778fbff802b1b22b with difficulty = 5

Block 27:

Hash of Previous Block (Block 14) Miner Pseudonym Nonce
000000245adf1fe4ecc469e45ba2f130b756d25fb7286e060c37a0441bd7da95 Sherlock 8771840
Insterted at: 2026-02-13 15:30:40
SHA-256 (Block 27) = 00000009b9f38ccffa4b612d308d3995b217e6a99eacfe3f0c1db638e2b4c324 with difficulty = 28

Block 28:

Hash of Previous Block (Block 26) Miner Pseudonym Nonce
06dddd29fbd4023d5c14c121f2739105d4139fc3177796a9778fbff802b1b22b Sam_Sepiol 29187
Insterted at: 2026-02-13 15:36:22
SHA-256 (Block 28) = 00580dce909467010b24e5dbbbb67190f090bda1e87b7f1810a8247bd95acc51 with difficulty = 9

Block 29:

Hash of Previous Block (Block 26) Miner Pseudonym Nonce
06dddd29fbd4023d5c14c121f2739105d4139fc3177796a9778fbff802b1b22b Sam_Sepiol 57485
Insterted at: 2026-02-13 15:37:13
SHA-256 (Block 29) = 00242ae1d31a1631af0c75b4e56e3c4ff497221321252ca6edcd9ecacc8374a7 with difficulty = 10

Block 30:

Hash of Previous Block (Block 22) Miner Pseudonym Nonce
037e3acda8cd97bf6516af3291a96a28ed95b84dc584998e634c519c2d443d48 Lankymcdanky 95631
Insterted at: 2026-02-13 15:40:16
SHA-256 (Block 30) = 00c7839f63fa8754a8503ffb76f91ab64667eaf962152633e29628813568e00e with difficulty = 8

Block 31:

Hash of Previous Block (Block 29) Miner Pseudonym Nonce
00242ae1d31a1631af0c75b4e56e3c4ff497221321252ca6edcd9ecacc8374a7 Sam_Sepiol 24586
Insterted at: 2026-02-13 15:43:17
SHA-256 (Block 31) = 0001410dcd62999497e2e87a82a5ea664651df78dc6d3a1a220446af7d2ceabb with difficulty = 15

Block 32:

Hash of Previous Block (Block 24) Miner Pseudonym Nonce
0161f63b112b630e77ae919bc63e270c98a1b96817dad13586975d910eeda42e Terry 4
Insterted at: 2026-02-13 15:45:09
SHA-256 (Block 32) = 002d7911caab0388f29cc382fc748cb2cfeea9fb004477454d505a9f7dd21c71 with difficulty = 10

Block 33:

Hash of Previous Block (Block 31) Miner Pseudonym Nonce
0001410dcd62999497e2e87a82a5ea664651df78dc6d3a1a220446af7d2ceabb Sam_Sepiol 9313
Insterted at: 2026-02-13 15:46:07
SHA-256 (Block 33) = 0000b32f1d7baf4588b99647e2af2e4503054b01f6c1786f74efa93e4e3e72e4 with difficulty = 16

Block 34:

Hash of Previous Block (Block 1) Miner Pseudonym Nonce
0cee05fddb70360961cc827b4b7ad522d042a3e08c24636a6b12fd92b45fd5b7 ImNotUmut4:) 2318995088
Insterted at: 2026-02-13 15:46:16
SHA-256 (Block 34) = 0000000072a45624e3ba04b69fe05efadc829bab54ad65949634b928475612f7 with difficulty = 33

Block 35:

Hash of Previous Block (Block 30) Miner Pseudonym Nonce
00c7839f63fa8754a8503ffb76f91ab64667eaf962152633e29628813568e00e Lankymcdanky 92373
Insterted at: 2026-02-13 15:46:50
SHA-256 (Block 35) = 007ade4e6008cea246f5dc9ba0053535a065bb8da785377177df2a3ef8ed3ada with difficulty = 9

Block 36:

Hash of Previous Block (Block 9) Miner Pseudonym Nonce
06646a8cb95113f6ea96a636746a6fc4b1ebcc908c1816c64490539145bbc26a unknownbeatumut 129114964
Insterted at: 2026-02-13 15:51:50
SHA-256 (Block 36) = 00000000b25129e5b25f1b1630b4e0b81e6a39388513e3148a9a60c889a3986e with difficulty = 32

Block 37:

Hash of Previous Block (Block 33) Miner Pseudonym Nonce
0000b32f1d7baf4588b99647e2af2e4503054b01f6c1786f74efa93e4e3e72e4 Sam_Sepiol 85781
Insterted at: 2026-02-13 18:29:34
SHA-256 (Block 37) = 00006bdbf36543813cf08ec33098efa7a6b35970a1c7cdaa9b94aabc097e6fb4 with difficulty = 17

© Sanjay Bhattacherjee 2022-2026