Crypto commits

Github commit history of 88 cryptocurrencies based on most popular repo (last updated: )

1. Internet Computer · ICP 723 commits
+100 contributors

105.00.025.50.75.Nov 18Dec 5Dec 22Jan 8 Created: 2021/05/09 · Updated: 2026/01/09 · Language: Rust · Watchers: 1719 · Top contributor: rumenov

2. Mina · MINA 525 commits
+100 contributors

100.00.025.50.75.Nov 18Dec 5Dec 22Jan 8 Created: 2017/12/17 · Updated: 2026/01/08 · Language: OCaml · Watchers: 2087 · Top contributor: mrmr1993

3. Bitcoin BEP2 · BTCB 478 commits
99 contributors

58.00.08.16.24.32.40.48.Nov 18Dec 5Dec 22Jan 8 Created: 2010/12/19 · Updated: 2026/01/13 · Language: C++ · Watchers: 87641 · Top contributor: laanwj

4. Bitcoin · BTC 409 commits
99 contributors

Digital gold
54.00.06.12.18.24.30.36.42.48.Nov 16Dec 1Dec 16Dec 31 Created: 2010/12/19 · Updated: 2025/12/22 · Language: C++ · Watchers: 87326 · Top contributor: laanwj

5. Avalanche · AVAX 314 commits
+100 contributors

57.00.08.16.24.32.40.48.Nov 18Dec 5Dec 22Jan 8 Created: 2020/03/10 · Updated: 2026/01/14 · Language: Go · Watchers: 2331 · Top contributor: StephenButtolph

6. Chainlink · LINK 305 commits
+100 contributors

External contract data
61.00.08.16.24.32.40.48.Nov 18Dec 5Dec 22Jan 8 Created: 2017/11/20 · Updated: 2026/01/09 · Language: Go · Watchers: 8132 · Top contributor: se3000

7. Bitcoin Cash ABC · BCHA 303 commits
+100 contributors

53.000.007.515.022.530.037.545.0Nov 18Dec 5Dec 22Jan 8 Created: 2017/05/01 · Updated: 2026/01/08 · Language: C++ · Watchers: 1277 · Top contributor: laanwj

8. Storj · STORJ 283 commits
+100 contributors

Rent disk space
57.00.08.16.24.32.40.48.Nov 18Dec 5Dec 22Jan 8 Created: 2018/04/04 · Updated: 2025/12/23 · Language: Go · Watchers: 3210 · Top contributor: egonelbre

9. Bitcoin Cash · BCH 249 commits
+100 contributors

Bitcoin clone
51.000.007.515.022.530.037.545.0Nov 18Dec 5Dec 22Jan 8 Created: 2017/05/01 · Updated: 2026/01/15 · Language: C++ · Watchers: 1277 · Top contributor: laanwj

10. eCash · XEC 245 commits
+100 contributors

47.000.007.515.022.530.037.5Nov 16Dec 1Dec 16Dec 31 Created: 2017/05/01 · Updated: 2026/01/12 · Language: C++ · Watchers: 1277 · Top contributor: laanwj

11. NEAR Protocol · NEAR 217 commits
+100 contributors

56.00.08.16.24.32.40.48.Nov 18Dec 5Dec 22Jan 8 Created: 2018/10/02 · Updated: 2026/01/09 · Language: Rust · Watchers: 2547 · Top contributor: bowenwang1996

12. Nervos Network · CKB 210 commits
67 contributors

80.00.010.20.30.40.50.60.70.Nov 16Dec 1Dec 16Dec 31 Created: 2018/11/19 · Updated: 2026/01/08 · Language: Rust · Watchers: 1211 · Top contributor: doitian

13. ZEON · ZEON 206 commits
+100 contributors

60.00.08.16.24.32.40.48.Jan 22Feb 8Feb 25Mar 14 Forked from: tokens · Source: tokens · Created: 2019/02/17 · Updated: 2019/02/18 · Language: JavaScript · Watchers: 0 · Top contributor: kolya182

14. Skycoin · SKY 202 commits
53 contributors

Cryptocurrency for decentralized internet
78.00.010.20.30.40.50.60.70.Oct 25Nov 15Dec 6 Created: 2013/12/24 · Updated: 2025/12/31 · Language: Go · Watchers: 585 · Top contributor: iketheadore

15. Rubic · RBC 174 commits
24 contributors

30.00.05.10.15.20.25.Nov 18Dec 5Dec 22Jan 8 Created: 2020/09/11 · Updated: 2025/12/30 · Language: TypeScript · Watchers: 83 · Top contributor: axtezy

16. Stellar · XLM 167 commits
96 contributors

Digital IOUs
39.00.06.12.18.24.30.Nov 16Dec 1Dec 16Dec 31 Created: 2014/11/24 · Updated: 2025/12/30 · Language: C++ · Watchers: 3262 · Top contributor: latobarita

17. XRP · XRP 163 commits
99 contributors

Enterprise payment settlement network
32.00.05.10.15.20.25.Nov 18Dec 5Dec 22Jan 8 Created: 2011/11/06 · Updated: 2025/12/24 · Language: C++ · Watchers: 5065 · Top contributor: JoelKatz

18. Ethereum · ETH 159 commits
+100 contributors

Programmable contracts and money
42.00.06.12.18.24.30.36.Nov 18Dec 5Dec 22Jan 8 Created: 2013/12/26 · Updated: 2025/12/29 · Language: Go · Watchers: 50579 · Top contributor: obscuren

19. Chia Network · XCH 144 commits
99 contributors

33.00.05.10.15.20.25.30.Nov 18Dec 5Dec 22Jan 8 Created: 2019/07/16 · Updated: 2026/01/07 · Language: Python · Watchers: 10864 · Top contributor: altendky

20. Cosmos · ATOM 136 commits
+100 contributors

26.00.05.10.15.20.Nov 18Dec 5Dec 22Jan 8 Created: 2016/02/05 · Updated: 2025/12/30 · Language: Go · Watchers: 6886 · Top contributor: julienrbrt

21. Gridcoin · GRC 118 commits
91 contributors

Rent compute power
46.000.007.515.022.530.037.5Oct 19Nov 3Nov 18Dec 3 Created: 2014/08/25 · Updated: 2026/01/06 · Language: HTML · Watchers: 605 · Top contributor: jamescowens

22. Moonriver · MOVR 103 commits
81 contributors

17.000.002.55.07.510.012.515.0Oct 25Nov 15Dec 6 Created: 2020/02/26 · Updated: 2026/01/09 · Language: TypeScript · Watchers: 942 · Top contributor: RomarQ

23. Wings · WINGS 85 commits
4 contributors

Decentralized crowdfunding and organizations
29.00.05.10.15.20.25.May 25Jun 15Jul 6 Created: 2019/05/27 · Updated: 2019/07/26 · Language: Go · Watchers: 1 · Top contributor: borispovod

24. RSK Smart Bitcoin · RBTC 78 commits
68 contributors

28.00.05.10.15.20.25.Nov 18Dec 5Dec 22Jan 8 Created: 2017/05/16 · Updated: 2026/01/09 · Language: Java · Watchers: 684 · Top contributor: ajlopez

25. Verge · XVG 73 commits
60 contributors

Privacy Dogecoin
33.00.05.10.15.20.25.30.Oct 23Nov 11Nov 30Dec 19 Created: 2016/01/22 · Updated: 2026/01/12 · Language: C++ · Watchers: 1579 · Top contributor: justinvforvendetta

26. Decred · DCR 70 commits
+100 contributors

Bitcoin with alternative governance
20.00.04.8.12.16.Nov 16Dec 1Dec 16Dec 31 Created: 2016/01/26 · Updated: 2026/01/14 · Language: Go · Watchers: 766 · Top contributor: davecgh

27. Trust Wallet Token · TWT 69 commits
98 contributors

15.000.002.55.07.510.012.5Nov 18Dec 5Dec 22Jan 8 Created: 2019/08/09 · Updated: 2025/12/28 · Language: Go · Watchers: 5184 · Top contributor: Cryptocool1

28. Gas · GAS 66 commits
71 contributors

Pay fees on Neo
13.000.002.55.07.510.0Nov 18Dec 5Dec 22Jan 8 Created: 2015/05/31 · Updated: 2026/01/05 · Language: C# · Watchers: 3536 · Top contributor: shargon

29. Neo · NEO 64 commits
71 contributors

Chinese-market Ethereum
13.000.002.55.07.510.0Nov 16Dec 1Dec 16Dec 31 Created: 2015/05/31 · Updated: 2025/12/23 · Language: C# · Watchers: 3535 · Top contributor: shargon

30. PancakeSwap · CAKE 63 commits
99 contributors

23.00.05.10.15.20.Nov 18Dec 5Dec 22Jan 8 Created: 2020/09/13 · Updated: 2025/12/31 · Language: TypeScript · Watchers: 2878 · Top contributor: memoyil

31. SushiSwap · SUSHI 58 commits
29 contributors

16.000.002.55.07.510.012.5Nov 18Dec 5Dec 22Jan 8 Created: 2020/08/23 · Updated: 2025/12/23 · Language: TypeScript · Watchers: 1951 · Top contributor: matthewlilley

32. Monero · XMR 57 commits
+100 contributors

Private digital cash
16.000.002.55.07.510.012.5Nov 16Dec 1Dec 16Dec 31 Created: 2014/04/30 · Updated: 2025/12/29 · Language: C++ · Watchers: 10178 · Top contributor: fluffypony

33. Serum · SRM 56 commits
+100 contributors

12.000.002.55.07.510.0Oct 23Nov 11Nov 30Dec 19 Created: 2020/12/31 · Updated: 2026/01/02 · Language: Rust · Watchers: 4883 · Top contributor: armaniferrante

34. Bitcoin SV · BSV 50 commits
99 contributors

17.000.002.55.07.510.012.515.0Nov 18Dec 5Dec 22Jan 8 Created: 2018/08/29 · Updated: 2025/12/12 · Language: C++ · Watchers: 685 · Top contributor: laanwj

35. The Graph · GRT 44 commits
+100 contributors

17.000.002.55.07.510.012.515.0Nov 18Dec 5Dec 22Jan 8 Created: 2018/04/19 · Updated: 2026/01/14 · Language: Rust · Watchers: 3102 · Top contributor: lutter

36. Vai · VAI 42 commits
26 contributors

9.00.01.2.3.4.5.6.7.8.Nov 18Dec 5Dec 22Jan 8 Created: 2020/09/28 · Updated: 2026/01/08 · Language: Solidity · Watchers: 275 · Top contributor: web3rover

37. Venus Reward Token · VRT 42 commits
26 contributors

9.00.01.2.3.4.5.6.7.8.Nov 16Dec 1Dec 16Dec 31 Created: 2020/09/28 · Updated: 2025/12/12 · Language: Solidity · Watchers: 275 · Top contributor: web3rover

38. Livepeer · LPT 41 commits
78 contributors

11.000.002.55.07.510.0Nov 18Dec 5Dec 22Jan 8 Created: 2017/06/18 · Updated: 2026/01/13 · Language: Go · Watchers: 576 · Top contributor: yondonfu

39. Nano · NANO 35 commits
88 contributors

13.000.002.55.07.510.0Nov 18Dec 5Dec 22Jan 8 Created: 2014/05/01 · Updated: 2026/01/06 · Language: C++ · Watchers: 3531 · Top contributor: clemahieu

40. Zano · ZANO 34 commits
24 contributors

10.000.002.55.07.5Nov 16Dec 1Dec 16Dec 31 Created: 2018/12/27 · Updated: 2026/01/13 · Language: C++ · Watchers: 152 · Top contributor: sowle

41. NXM · NXM 33 commits
24 contributors

22.00.04.8.12.16.20.Nov 16Dec 1Dec 16Dec 31 Created: 2019/11/20 · Updated: 2026/01/05 · Language: JavaScript · Watchers: 181 · Top contributor: danoctavian

42. Curecoin · CURE 30 commits
20 contributors

Rent compute for science
18.00.02.4.6.8.10.12.14.16.Nov 16Dec 1Dec 16Dec 31 Created: 2014/05/10 · Updated: 2025/12/27 · Language: C++ · Watchers: 149 · Top contributor: cygnusxi

43. Algorand · ALGO 29 commits
+100 contributors

7.00.01.2.3.4.5.6.Nov 18Dec 5Dec 22Jan 8 Created: 2019/06/10 · Updated: 2026/01/01 · Language: Go · Watchers: 1422 · Top contributor: tsachiherman

44. Arweave · AR 28 commits
36 contributors

6.000.000.81.62.43.24.04.8Oct 25Nov 15Dec 6 Created: 2017/08/02 · Updated: 2025/12/26 · Language: Erlang · Watchers: 1031 · Top contributor: ldmberman

45. IoTeX · IOTX 27 commits
+100 contributors

6.000.000.81.62.43.24.04.8Oct 25Nov 15Dec 6 Created: 2018/04/19 · Updated: 2025/12/16 · Language: Go · Watchers: 1579 · Top contributor: dustinxie

46. Oxen · OXEN 26 commits
31 contributors

16.000.002.55.07.510.012.5Oct 25Nov 15Dec 6 Created: 2018/06/18 · Updated: 2026/01/15 · Language: C++ · Watchers: 2009 · Top contributor: majestrate

47. SKALE Network · SKL 25 commits
14 contributors

11.000.002.55.07.510.0Nov 18Dec 5Dec 22Jan 8 Created: 2019/02/28 · Updated: 2025/12/22 · Language: C++ · Watchers: 155 · Top contributor: olehnikolaiev

48. Elrond · EGLD 22 commits
57 contributors

11.000.002.55.07.510.0Nov 18Dec 5Dec 22Jan 8 Created: 2018/08/17 · Updated: 2026/01/13 · Language: Go · Watchers: 952 · Top contributor: iulianpascalau

49. Persistence · XPRT 22 commits
45 contributors

6.000.000.81.62.43.24.04.8Sep 23Oct 10Oct 27Nov 13 Created: 2020/04/13 · Updated: 2025/12/31 · Language: Go · Watchers: 11 · Top contributor: puneet2019

50. Mask Network · MASK 22 commits
86 contributors

18.00.02.4.6.8.10.12.14.16.Nov 18Dec 5Dec 22Jan 8 Created: 2019/04/01 · Updated: 2026/01/04 · Language: TypeScript · Watchers: 1564 · Top contributor: Jack-Works

51. UMA · UMA 21 commits
52 contributors

8.00.01.2.3.4.5.6.7.Nov 16Dec 1Dec 16Dec 31 Created: 2018/07/24 · Updated: 2025/12/13 · Language: JavaScript · Watchers: 437 · Top contributor: mrice32

52. MimbleWimbleCoin · MWC 21 commits
+100 contributors

6.000.000.81.62.43.24.04.8Oct 25Nov 15Dec 6 Forked from: grin · Source: grin · Created: 2019/06/23 · Updated: 2026/01/08 · Language: Rust · Watchers: 34 · Top contributor: ignopeverell

53. Celo · CELO 19 commits
+100 contributors

4.000.000.61.21.82.43.03.6Oct 25Nov 15Dec 6 Created: 2019/07/18 · Updated: 2026/01/05 · Language: Solidity · Watchers: 786 · Top contributor: aaronmgdr

54. Shiden Network · SDN 19 commits
39 contributors

6.000.000.81.62.43.24.04.8Nov 18Dec 5Dec 22Jan 8 Created: 2019/03/23 · Updated: 2026/01/09 · Language: Rust · Watchers: 776 · Top contributor: akru

55. OriginTrail · TRAC 15 commits
30 contributors

8.00.01.2.3.4.5.6.7.Nov 16Dec 1Dec 16Dec 31 Created: 2018/02/01 · Updated: 2025/12/17 · Language: JavaScript · Watchers: 230 · Top contributor: Mihajlo-Pavlovic

56. Request · REQ 14 commits
47 contributors

Invoicing
3.000.000.51.01.52.02.5Nov 18Dec 5Dec 22Jan 8 Created: 2017/11/07 · Updated: 2025/12/18 · Language: TypeScript · Watchers: 384 · Top contributor: vrolland

57. Cellframe · CELL 10 commits
22 contributors

3.000.000.51.01.52.02.5Nov 16Dec 1Dec 16Dec 31 Created: 2020/06/23 · Updated: 2025/12/24 · Language: C++ · Watchers: 20 · Top contributor: dmitriygerasimov

58. Signum · SIGNA 10 commits
60 contributors

2.000.000.40.81.21.6Nov 16Dec 1Dec 16Dec 31 Forked from: burstcoin · Source: burstcoin · Created: 2018/12/27 · Updated: 2025/12/29 · Language: Java · Watchers: 196 · Top contributor: jjos2372

59. Diamond · DMD 8 commits
3 contributors

Bitcoin clone
4.000.000.61.21.82.43.03.6Nov 16Dec 1Dec 16Dec 31 Created: 2025/10/12 · Updated: 2026/01/04 · Language: Shell · Watchers: 0 · Top contributor: SurfingNerd

60. Stealth · XST 8 commits
2 contributors

Privacy Bitcoin clone
4.000.000.61.21.82.43.03.6Nov 16Dec 1Dec 16Dec 31 Created: 2014/06/26 · Updated: 2025/12/19 · Language: C · Watchers: 53 · Top contributor: StealthSend

61. Game.com · GTC2 6 commits
4 contributors

2.000.000.40.81.21.6Nov 25Dec 16Jan 6 · Top contributor: MecerBear

62. Grin · GRIN 5 commits
+100 contributors

3.000.000.51.01.52.02.5Nov 18Dec 5Dec 22Jan 8 Created: 2016/10/20 · Updated: 2026/01/12 · Language: Rust · Watchers: 5092 · Top contributor: antiochp

63. Veil · VEIL 5 commits
88 contributors

3.000.000.51.01.52.02.5Nov 18Dec 5Dec 22Jan 8 Created: 2018/12/12 · Updated: 2025/11/23 · Language: C++ · Watchers: 122 · Top contributor: presstab

64. Ontology · ONT 4 commits
58 contributors

4.000.000.61.21.82.43.03.6Nov 18Dec 5Dec 22Jan 8 Created: 2018/04/12 · Updated: 2026/01/03 · Language: Go · Watchers: 850 · Top contributor: laizy

65. TomoChain · TOMO 4 commits
99 contributors

4.000.000.61.21.82.43.03.6Nov 18Dec 5Dec 22Jan 8 Created: 2019/11/11 · Updated: 2025/12/06 · Language: Go · Watchers: 180 · Top contributor: obscuren

66. API3 · API3 4 commits
31 contributors

1.0000.0000.250.500.75Nov 18Dec 5Dec 22Jan 8 Created: 2020/06/08 · Updated: 2026/01/02 · Language: TypeScript · Watchers: 170 · Top contributor: bbenligiray

67. Obyte · GBYTE 4 commits
30 contributors

Decentralized database and currency
3.000.000.51.01.52.02.5Nov 16Dec 1Dec 16Dec 31 Created: 2016/09/05 · Updated: 2025/12/29 · Language: JavaScript · Watchers: 432 · Top contributor: tonyofbyteball

68. LanaCoin · LANA 4 commits
+100 contributors

Cryptocurrency
2.000.000.40.81.21.6Aug 21Sep 9Sep 28Oct 17 Forked from: blackcoin-old · Source: novacoin · Created: 2016/05/11 · Updated: 2025/11/29 · Language: C++ · Watchers: 9 · Top contributor: laanwj

69. Mars Network · MARS 4 commits
99 contributors

2.000.000.40.81.21.6Nov 18Dec 5Dec 22Jan 8 Created: 2024/11/30 · Updated: 2026/01/10 · Language: C++ · Watchers: 5 · Top contributor: laanwj

70. Ocean Protocol · OCEAN 3 commits
22 contributors

3.000.000.51.01.52.02.5Nov 16Dec 1Dec 16Dec 31 Created: 2018/04/26 · Updated: 2025/11/12 · Language: Shell · Watchers: 102 · Top contributor: alexcos20

71. VeChain · VET 2 commits
36 contributors

1.0000.0000.250.500.75Nov 16Dec 1Dec 16Dec 31 Created: 2018/06/07 · Updated: 2026/01/05 · Language: Go · Watchers: 814 · Top contributor: qianbin

72. THETA · THETA 2 commits
8 contributors

Decentralized video streaming
2.000.000.40.81.21.6Nov 16Dec 1Dec 16Dec 31 Created: 2018/08/06 · Updated: 2025/12/25 · Language: Go · Watchers: 366 · Top contributor: jieyilong

73. Waves · WAVES 2 commits
60 contributors

Decentralized exchange and crowdfunding
2.000.000.40.81.21.6Nov 18Dec 5Dec 22Jan 8 Created: 2016/04/17 · Updated: 2026/01/06 · Language: Scala · Watchers: 1172 · Top contributor: ismagin

74. Theta Fuel · TFUEL 2 commits
8 contributors

2.000.000.40.81.21.6Nov 18Dec 5Dec 22Jan 8 Created: 2018/08/06 · Updated: 2025/12/25 · Language: Go · Watchers: 366 · Top contributor: jieyilong

75. VeThor Token · VTHO 2 commits
36 contributors

1.0000.0000.250.500.75Nov 16Dec 1Dec 16Dec 31 Created: 2018/06/07 · Updated: 2025/12/28 · Language: Go · Watchers: 814 · Top contributor: qianbin

76. Convex Finance · CVX 2 commits
4 contributors

2.000.000.40.81.21.6Oct 25Nov 15Dec 6 Created: 2021/03/04 · Updated: 2026/01/06 · Language: JavaScript · Watchers: 181 · Top contributor: C2tP-C2tP

77. Aion · AION 2 commits
39 contributors

High performance blockchain
2.000.000.40.81.21.6Oct 19Nov 3Nov 18Dec 3 Created: 2018/01/22 · Updated: 2025/12/26 · Language: Java · Watchers: 342 · Top contributor: AlexandraRoatis

78. Nexus · NXS 2 commits
15 contributors

Bitcoin clone
2.000.000.40.81.21.6Nov 18Dec 5Dec 22Jan 8 Created: 2018/01/06 · Updated: 2025/12/06 · Language: C++ · Watchers: 66 · Top contributor: VidereLicet

79. Navcoin · NAV 2 commits
29 contributors

Bitcoin with private transactions
2.000.000.40.81.21.6Oct 25Nov 15Dec 6 Created: 2017/02/21 · Updated: 2025/12/08 · Language: C++ · Watchers: 122 · Top contributor: aguycalled

80. Vertcoin · VTC 2 commits
98 contributors

Bitcoin clone
2.000.000.40.81.21.6Nov 18Dec 5Dec 22Jan 8 Created: 2017/02/07 · Updated: 2025/12/13 · Language: C++ · Watchers: 354 · Top contributor: fanquake

81. PRIZM · PZM 2 commits
1 contributor

Cryptocurrency
1.0000.0000.250.500.75Nov 18Dec 5Dec 22Jan 8 Created: 2025/05/05 · Updated: 2025/11/05 · Language: Java · Watchers: 2 · Top contributor: prizmspace

82. Mysterium · MYST 2 commits
45 contributors

Decentralized VPN
1.0000.0000.250.500.75Sep 21Oct 6Oct 21Nov 5 Created: 2017/01/25 · Updated: 2026/01/13 · Language: Go · Watchers: 1168 · Top contributor: Waldz

83. DNotes · NOTE 2 commits
2 contributors

2.000.000.40.81.21.6Feb 18Mar 5Mar 20Apr 4 Created: 2015/02/18 · Updated: 2018/01/08 · Language: C++ · Watchers: 6 · Top contributor: DNotesCoin

84. Qtum · QTUM 1 commit
+100 contributors

Ethereum contracts on Bitcoin
1.0000.0000.250.500.75Nov 18Dec 5Dec 22Jan 8 Created: 2017/03/03 · Updated: 2025/12/24 · Language: C++ · Watchers: 1215 · Top contributor: laanwj

85. Status · SNT 1 commit
+100 contributors

Decentralized application browser
1.0000.0000.250.500.75Nov 18Dec 5Dec 22Jan 8 Created: 2016/02/22 · Updated: 2026/01/13 · Language: Clojure · Watchers: 4015 · Top contributor: rasom

86. Pirate Chain · ARRR 1 commit
99 contributors

1.0000.0000.250.500.75Nov 16Dec 1Dec 16Dec 31 Created: 2019/10/11 · Updated: 2025/12/09 · Language: C++ · Watchers: 123 · Top contributor: jl777

87. Rocket Pool · RPL 1 commit
16 contributors

1.0000.0000.250.500.75Oct 19Nov 3Nov 18Dec 3 Created: 2017/05/18 · Updated: 2025/12/27 · Language: Solidity · Watchers: 978 · Top contributor: moles1

88. TajCoin · TAJ 1 commit
5 contributors

1.0000.0000.250.500.75Oct 25Nov 15Dec 6 Created: 2016/07/09 · Updated: 2025/11/29 · Language: C++ · Watchers: 5 · Top contributor: cryptosi