[{"data":1,"prerenderedAt":345},["ShallowReactive",2],{"project-14730354":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":22,"keywords":23,"reception":29,"sentiment":30,"stance_mix":31,"scored_comments":35,"aspects":36,"strip":41,"post_text":42,"what":43,"said":54,"maker_in_thread":126,"shape":128,"grid":133,"attempts":306,"same_week":307,"maker_shows":38,"maker_hidden":337,"reader_version":338,"card":339},"14730354","crackcoin","Very basic blockchain-free cryptocurrency PoC in Python","title","Show HN: Very basic blockchain-free cryptocurrency PoC in Python","https:\u002F\u002Fgithub.com\u002FDutchGraa\u002Fcrackcoin","github.com","Graa",1499616074,2017,171,65,211,2242,10,"notable","finance_crypto","cryptocurrency proof of concept","library",[24,25,26,27,28],"cryptocurrency","blockchain-free","dag","python","proof of concept","curious",-0.313,{"positive":32,"neutral":33,"mixed":32,"critical":34},0,4,3,7,{"idea":37,"design":39,"docs":40},{"positive":32,"critical":38},1,{"positive":32,"critical":38},{"positive":32,"critical":38},[34,34,32,34,32,32,38,32,32,32,32,32,32,32,32,32,38,32,32,32,32,32,32,32,32,32,32,32,32,38,32,32,32,32,32,32,34,32,32,32],null,{"problem":42,"audience":42,"pricing":42,"motivation":42,"time_to_build":42,"stack":44,"openness":51,"stage":52,"team_size":53},[45],{"value":46,"source":47,"evidence":48},"Python","maker",[49],{"id":50},"post","open_source","prototype","unknown",{"praise":55,"objections":64,"requests":79,"questions":80,"alternatives":89},[56],{"value":57,"source":58,"evidence":59},"Looks nice, interesting graph-based alternative to blockchain","commenter",[60],{"id":61,"by":62,"text":63},"14731096","pollyannas","So this is basically a blockchain, but with transactions instead of blocks, and diverging-then-converging graph instead of a linear sequence of blocks (like a real family graph…",[65,72],{"value":66,"source":58,"evidence":67},"Blockchain-free designs lack controlled coin issuance and fee-based security",[68],{"id":69,"by":70,"text":71},"14732698","Jabanga","There is no way to have a controlled release of new coins into the system. For that you need a blockchain that establishes a consensus on time transpired and on the total…",{"value":73,"source":58,"evidence":74},"DAG approaches may be vulnerable to Sybil attacks",[75],{"id":76,"by":77,"text":78},"14731492","tribler","can this handle a trivial Sybil attack? That seems to be the drawback of a graph or DAG-based approach. -ledger scientist",[],[81,85],{"value":82,"source":58,"evidence":83},"What are the problems with the approach?",[84],{"id":61,"by":62,"text":63},{"value":86,"source":58,"evidence":87},"Can it handle a Sybil attack?",[88],{"id":76,"by":77,"text":78},[90,101,112,119],{"value":91,"source":58,"evidence":92},"IOTA",[93,97],{"id":94,"by":95,"text":96},"14730988","wonderous","IOTA: https:\u002F\u002Fcoinmarketcap.com\u002Fcurrencies\u002Fiota\u002F Here's the related white paper: https:\u002F\u002Fiota.org\u002FIOTA_Whitepaper.pdf Website is here: https:\u002F\u002Fiota.org",{"id":98,"by":99,"text":100},"14732952","Temasik","the only public blockchain-free cryptocurrency in top 10 of coinmarketcap is iota www.iota.org",{"value":102,"source":58,"evidence":103},"Ripple and Stellar",[104,108],{"id":105,"by":106,"text":107},"14730959","fiatjaf","Ripple, Stellar.",{"id":109,"by":110,"text":111},"14731169","donquichotte","Stellar Lumen",{"value":113,"source":58,"evidence":114},"Byteball",[115],{"id":116,"by":117,"text":118},"14731106","arisAlexis","byteball",{"value":120,"source":58,"evidence":121},"MaidSafe",[122],{"id":123,"by":124,"text":125},"14730983","liopleurodon","maidsafe edit: I thought Ripple and Stellar had 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