Blockchain Programming in C#

    Dear developers, and Bitcoin addicts,

    I wrote Blockchain Programming in C#, so I hope you too, hobbyist, startup and big corporation will move the block forwards.
    I get too much questions and requests for helping everyone to build on the Blockchain. But sadly, I only have 24H per day, no matter how much coffee I drink.

    Writing is the most scalable way to share my knowledge. And coherently with such a goal my work is under CC (ASA 3U), so you are free to share. (and encouraged to do so)

    download new edition old edition

    Code examples

    The book contains multiple example about how to use NBitcoin. Moreover, this website is itself open source, so you can take a look and play with it by yourself.

    source

    Hall of the Makers

    As you will read the book, you will have some challenges.

    For the first challenge, you need to send me at least 0.0004 BTC on 1KF8kUVHK42XzgcmJF4Lxz4wcL5WDL97PB with some kind words in the OP_RETURN of your transaction.

    This money goes into my "Coffee and Sushi Wallet" that will keep me fed and compliant while writing the rest of the book.

    You can download the first part of the book for free to know how.

    Here are the true makers that cleared the task, ordered by success, generosity then time (confirmed only):

    Current block height: 618941 (0 h 1 min 11 sec ago)

    Position Address Amount Kind Words Transaction Id
    1 19MyKR8sQSpoVxKpaBos5zrqK7tcSAsJyG 0.13370000 Nice uses of colored coins, well explained! :) Link
    2 18bximb4njHjo1TpvpCDL75q26KnbKoXoz 0.02000000 Best Regards, Thank you kindly! :) Link
    3 16HqBWKkC92YEWQMNLXFuFQNhzrDbwBY6j 0.02000000 Ashish81 : NBitcoin is Awesome, Thanks :) Link
    4 1KtYTyyh7V6MfFWntwzKMKmVCpugzd2Bxu 0.01068365 Thank you Nicolas!! - JungleHeart Link
    5 1NP8zmaVo7mQdeeThgWQcnBZ7U2ZBS12by 0.01000000 Thanks! :) Link
    6 1Hit1tMzZd7zgCA5KrQQPzbvYBKs3ej4Sh 0.01000000 It works! Thanks nicholas/adam Link
    7 1F5b1CiKJC8JGqSButjeyvo92daw1TbG2d 0.00950000 Excellent Link
    8 16q5XgW2mRaSBrsYncAXFMhAGNFDpKfHaK 0.00650000 NBitcoin is great!! from YOKOHAMA. Link
    9 14SHWbReg8ioupEaFBPr8LywavzFYWrbbv 0.00600000 Salut et bravo pour NBitcoin! Link
    10 14dBuGUPWhjnYkKQvoW2vCNQuygNmt5U1n 0.00500000 From hypergori,Thanks for a great book and this is 80 bytes message on OP_RETURN Link
    11 1P5a52yZ2EspooeoxraUKs2tMeQfcwMUmS 0.00500000 gorazdko loves NBitcoin too Link
    12 1P4iaL7zDmyaTz8Dg5ocF5JV35eVL5kRZx 0.00450000 WooHoo! Awesome Tutorial! >:D Link
    13 1LUtd66PcpPx64GERqufPygYEWBQR2PUN6 0.00400000 Thanks ! :) Link
    14 13YzGYW93qs3Y6YJp2Ac8ZX3jEAg3jgWDs 0.00400000 Bill Strait says hello and thank you. Link
    15 14dSoNuCUEMpuSBhsMAzdvB6D4mVuaUrL7 0.00400000 Amazing! Link
    16 1DdY4rrrcQtLv6R4gqPg8G47Q2sH57ZkeG 0.00400000 Thanks! Marek Link
    17 1APbYrSf3KHwwJMx5zLXeosyRoy15dLktc 0.00400000 Thanks ! ;) Link
    18 12thvqD6wMfyVuVxR8myrtHbSZp4jhh5uU 0.00400000 You're a star!!! :) Link
    19 1BJatyvD6vQxX8hmKYHH3X6HPAgUECyHRo 0.00400000 Bill Strait is updating screenshots. Link
    20 1B9frxWTcyiTx5W6RUZCfB15fJrX6ZiYs2 0.00400000 Thanks ! :) Link
    21 1NpYetwzxsuxTqwCsjABDvA8YYU9pU5F5z 0.00400000 YarkoL loves NBitcoin Link
    22 154so9NEUYcZEZA1uoRF1fXA4Uq84MY1FH 0.00400000 Great book. Want a job? join.readify.net Link
    23 19fVWeRJhgsP3EzZP47k68N7vEbVSWnKuT 0.00400000 reddit.com/user/nopara73 Link
    24 1A8zb49WCSKbCUpcvsm8ShnFQ61wrjF2H8 0.00400000 Thanks! Go barefoot! Link
    25 1G3zxxS77pM7ovRwjZtpULXoqUnVy1tLfv 0.00400000 Thanks ! :) Link
    26 14cZdFpNGWbQTp9RNFXyampuhj61sBzr4s 0.00400000 Heber says Hello!! Link
    27 1KKtuBn4RHEWCtaQzuzXvNnAth5Ve7XUgP 0.00400000 Thanks! from jeffsurcess Link
    28 1LXrNAknqr2VUy5chKHTn52q3nZjJ7uDTT 0.00400000 From Botcoin Link
    29 18yFEA3ush88C9DDv4hAW43iuJkdSwTzeA 0.00400000 Thanks from Tomoaki at Tokyo! Link
    30 13BqtXHMioozBGcGq2ouTfqp8WtinyArLG 0.00400000 Yo What's UP Nic! :) Link
    31 17rp66spgaqyt9yMMje8JJde7jkkWdByYo 0.00400000 Thanks! Link
    32 1DzYnw5i5u7o8UTjCinfnNvL36E6eXQZuo 0.00400000 Thanks ! :) from Wichit Link
    33 1PvjNSa9ZbPFU7iTiP3wcVRuyMrDvz7SjX 0.00400000 Thanks ! :) Link
    34 12itMJwyRNnCfqioBuKjd4yZRYbzHj9ZnN 0.00400000 Nicolas, thanks a lot! :-) Link
    35 19f9jQ2YoebMrAWU75GThsSdf96g2owDFR 0.00400000 Thanks ! :) Link
    36 1HF9jCriPppd4rAk2R72uYCwcM1HtnMSV4 0.00400000 Greate book! Link
    37 14DMvcPMmHki3MFj47C9iA8xQNCo9cfijR 0.00400000 * RoB says 'thanks!' Blöckchaïn rules! * Link
    38 1Mw1YKAt5bTBGunFT6Cj8pr2LT2XZyF3H 0.00400000 Great work Nicolas ! :) ~AB Link
    39 1FZnoy79sKvBG1BgVAAmPFqGdU6igSD8ck 0.00400000 Now reading the book :) Link
    40 1Jxu9fqA1znpnLQhZv9hqhraJk7S3pEqUL 0.00400000 Thanks ! :) Link
    41 1PWKTpMCg23BQXL8WJvDqDzBBvqrtBsdPd 0.00400000 Thanks from Ken TCentral! Link
    42 17TFmehNNqCiP1Whq9i2QTSLgaMR3McMiP 0.00400000 Great book, thank you from Takayuki at Tokyo. Link
    43 1CV9WvAz67hhzDfrGoqbHKcymEoWhxRdvz 0.00350000 Thanks for the great book - @dotnetbear Link
    44 115L6RrGCK3rnaWR8QvAkNy9ono1UJuLkT 0.00280000 Ramon & Sylvia Camarillo on the Chain! Link
    45 1Htc3vqwyMiP8DYWECNaY4Zg9ESsMkUhFT 0.00200000 JPS02 - Thanks ! Link
    46 18cH4sHhkNA3bWvo5deXtRbcZFkY3ZouAx 0.00150000 GPJ loves NBitcoin! Link
    47 1KSm3e8aVeCf9w6mRo63ArNwpEo1qv1B3A 0.00100000 Thanks! :) Link
    48 1BBWTJDZSmRPm3vT6gnkdFjkE81e9UYMmK 0.00100000 libertas aequitas veritas Link
    49 16APthfkeSC8GpynHz41RwGEGACYTNAHoD 0.00100000 Thank you Nicolas and Adam!!! -Paz Link
    50 19be3RHnQsytNdBv6tkBzoMTx4b9rkEBR2 0.00097000 Grab a 'Flat White' on me, Nicolas. Keep up the great work. Link
    51 1GA9AijMQNFtg7vPGZUetk7aZF8rrSJa7X 0.00092060 More to come! Link
    52 1D4U2KAjCtg1oATwoCAN2CJqKfaCkkWS8E 0.00080085 Blockchain is weird but in a good way Link
    53 13BqtXHMioozBGcGq2ouTfqp8WtinyArLG 0.00080000 Yo What's UP Nic! :) Link
    54 1MmG7tZ5ka21RUddqJPRforf1PwFS2TAqN 0.00077355 Great Book, Regards Mz Link
    55 1GsFz8tWaBCUgNU9Fgxc3JpAccNGcAYdv7 0.00050000 Thanks a lot, keep it up :) Link
    56 1KFQupmY6Kq1jTL6aCnw614kUXCW1a7d6L 0.00043692 jedi master is blockchain Link
    57 1PCLtkUwmSw8HEHE5UxM6KgevTUCfR6Gq4 0.00041000 Thanks for this great resource! Enjoy! Link
    58 1Htm5b771kzJeAEd6L5Vvcxm8oQ94kfis8 0.00040000 Thanks from Tomoaki at Tokyo ! Link
    59 1MFt8ifgV1u11eg2aMLuLZvxF56qgAhuME 0.00040000 See you in Japan @ ScalingBitcoin 2018! - @igorgue Link
    60 18Cf4LhiW3RwYbUH4xaQS9hmNH6TcM25Aw 0.00040000 Thanks from Shen Longbin 申龙斌 Link
    61 1EMzreNZEDGTLREaR8rCHbZS72JBo4QauB 0.00040000 This book is awesome, GF Link
    62 1FQiX2KRYJH6qGTi48YKUM7LCQh7WNKuyt 0.66431513 (lazy) Link
    63 17Q2JmL3PpxfvqhEKdCzQxnng2m9S7xe3d 0.12345678 (lazy) Link
    64 3PuSLTXsksJSUH3hn12ScP2BaM5D4QaCMX 0.10000000 (lazy) Link
    65 1CKhokaLZrLELZCsDEN55yvfELd8iDxsF5 0.03000000 (lazy) Link
    66 1mzeXBi8TjL5V1usdnP5dZTfoZ76x3Wy1 0.02500000 (lazy) Link
    67 3QJimE4EmtcG5iuuvXJGUEd8qnBpLBsR9x 0.02000000 (lazy) Link
    68 1HX1VgHLe7fzy4NM8LGT41caAkW5rPdmbE 0.01000000 (lazy) Link
    69 1BfaVUNA1uHrbNWH5LcfqKLR9hwATMptzF 0.01000000 (lazy) Link
    70 3GpzZvaSZBUZqxY66zY2BPTkAydspZbhcV 0.01000000 (lazy) Link
    71 112LMTtaGrPY9Z1ww8ovJRkHa3GMee642B 0.00602600 (lazy) Link
    72 14CD1pFpBtFt5QVgbUkBcpTCJ5HUGhHEmG 0.00500000 (lazy) Link
    73 1KYgg5hXgXstY2oE1uEbNwmjhqa8GjQsfV 0.00500000 (lazy) Link
    74 1JycDPqbtBYpcbJUrX7c14whqRxiLDM2w9 0.00500000 (lazy) Link
    75 13A9odWXfs8VEkcyFa9amGmsq7nw827FJQ 0.00500000 (lazy) Link
    76 19754oopLFiW13dzvvTM92nX1ZEY78JhQG 0.00492000 (lazy) Link
    77 19ogGmweRyP2nNjaysv1dTWEKsSBvW146k 0.00488624 (lazy) Link
    78 12tgDWtviV6gwpxP4AGT5EykKvq8pHBiKS 0.00400000 (lazy) Link
    79 1AdaX4FUbbANddLbNrE6Qvxfr6emwGiv1Q 0.00400000 (lazy) Link
    80 1DQcL8dYP5eYdbYjJLZdMWxR3558HbFnSD 0.00400000 (lazy) Link
    81 13BqtXHMioozBGcGq2ouTfqp8WtinyArLG 0.00400000 (lazy) Link
    82 1C9HtFk55bTbDgFPQmkY8uAjpKpFj5YeUV 0.00400000 (lazy) Link
    83 14nxsZPh1EnE9M2HmsGcL6tfLMQbcfFYDs 0.00400000 (lazy) Link
    84 13XWJQxyEjT1otZAC3oHVJAV8fyeQgrtUT 0.00400000 (lazy) Link
    85 1EL1co7dJaAnqQZauUBi1aVbC7C42P3kNx 0.00400000 (lazy) Link
    86 18DuxfZGbeVVApt42JMx3BSwYemAKieJsu 0.00400000 (lazy) Link
    87 1EFGXZDsuNqVnHeWAz7HPJAM1bygaDdFGE 0.00300000 (lazy) Link
    88 391dNZCiF9mT8tE99oS5vj3T5jQxrkPAbp 0.00253956 (lazy) Link
    89 1B1cq2xcaZff9TVzCx1DdVHsBc33XMrt5x 0.00235655 (lazy) Link
    90 1MQw5Vvv1ykcPx2ecKnakut5zULWYy7TZt 0.00225235 (lazy) Link
    91 bc1qwqdg6squsna38e46795at95yu9atm8azzmyvckulcc7kytlcckxswvvzej 0.00200000 (lazy) Link
    92 154udgQ1HR6TBwgwdnBr3FccXgAsjqznt7 0.00180000 (lazy) Link
    93 bc1q2hv30a0ree83lsp8qvlfzmd22l7089z5lg9j8f 0.00095500 (lazy) Link
    94 1C2oL819GxQrhCSnZ5UVvyheXXUpw2vbve 0.00078105 (lazy) Link
    95 1LeeRd2nF19ntewhXF3LdiYTBKRuMoP2UG 0.00055400 (lazy) Link
    96 1Cx9dEKkHHScKEvUikx4TdqSNiWbkdbXTw 0.00048500 (lazy) Link

    PS: I've seen some people sending 0.0004 BTC but forgetting the OP_RETURN. If you want me to return the BTC, ask me with your signature to refund it on BTC Talk.