https://www.multichain.com/qa/tag/captcha Powered by Question2Answer https://www.multichain.com/qa/3225/implementing-captcha-require-modifying-multichaind-source Hello,<br /> <br /> Firstly, thank you for developing this amazing software. I'm going to be releasing an early alpha build of an application I'm working in a few weeks, and multichain is the biggest engine humming away inside it.<br /> <br /> I need to implement a CAPTCHA-like system to prevent users from spamming the blockchain with garbage. I've been thinking about this problem a lot, and I suspect I will need to modify multichaind to accomplish this. I'll explain why my thinking has led to this conclusion, please let me know if there is another way I could tackle this problem.<br /> <br /> Essentially, by main concern is that a user could receive asset issuing permissions on a blockchain (through my application), and then take their private key, connect to the blockchain with multichaind directly, and proceed to flood the blockchain with bad/useless data.<br /> <br /> So far, the one solution I've come up with is integrating a CAPTCHA-like system directly into multichaind, perhaps requiring CAPTCHA entry only to users of a certain permissions group (e.g. an admin could continue to publish to the blockchain without entering CAPTCHA responses).<br /> <br /> Does this seem like a reasonable solution, and can you think of any ways to incorporate this without modifying multichaind? Open to any solution that could help me prevent spamming/abuse of publishing rights to a blockchain.<br /> <br /> Thank you! https://www.multichain.com/qa/3225/implementing-captcha-require-modifying-multichaind-source Thu, 01 Dec 2016 22:32:35 +0000