[{"data":1,"prerenderedAt":278},["ShallowReactive",2],{"project-18335432":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":28,"sentiment":29,"stance_mix":30,"scored_comments":34,"aspects":35,"strip":40,"post_text":42,"what":43,"said":83,"maker_in_thread":171,"shape":179,"grid":184,"attempts":240,"same_week":241,"maker_shows":228,"maker_hidden":270,"reader_version":271,"card":272},"18335432","CryptoProof","post proofs to the Ethereum blockchain for free","title","Show HN: CryptoProof – post proofs to the Ethereum blockchain for free","https:\u002F\u002Fcryptoproof.org","cryptoproof.org","flixic",1540898054,2018,55,27,745,2155,35,"notable","security_privacy","blockchain timestamping","web_app",[24,25,26,27],"blockchain timestamp","ethereum proof","document notarization","hash proof","curious",0.231,{"positive":31,"neutral":32,"mixed":33,"critical":33},3,11,0,14,{"docs":36,"design":38,"pricing":39},{"positive":37,"critical":33},1,{"positive":33,"critical":33},{"positive":33,"critical":33},[33,31,33,31,33,31,33,31,33,33,31,31,33,41,33,31,31,33,31,33,31,33,33,41,31,33,41],5,null,{"problem":44,"audience":42,"pricing":51,"motivation":57,"time_to_build":61,"stack":65,"openness":80,"stage":81,"team_size":82},{"value":45,"source":46,"evidence":47},"Provides timestamped proof that content existed at a point in time, posted to Ethereum","maker",[48],{"id":49,"by":11,"text":50},"18335439","Hi HN. Quick comments about this project: * Today is 10 year anniversary to the original bitcoin.pdf release. This pdf is the first document proof I posted, included in the first…",{"value":52,"source":46,"evidence":53},"Free to use, funded by maker; donations accepted",[54],{"id":55,"by":11,"text":56},"18337316","It costs about 0.8 ETH per year to run, and I’ve personally funded it with 1 ETH. I do appreciate donations: https:\u002F\u002Fcryptoproof.org\u002Fsupport",{"value":58,"source":46,"evidence":59},"Maker left a startup and wanted to build small ideas quickly to test what resonates",[60],{"id":49,"by":11,"text":50},{"value":62,"source":46,"evidence":63},"About 10 days",[64],{"id":49,"by":11,"text":50},[66,70,76],{"value":67,"source":46,"evidence":68},"Vue.js",[69],{"id":49,"by":11,"text":50},{"value":71,"source":46,"evidence":72},"Webpack",[73],{"id":74,"by":11,"text":75},"18339388","Thanks for the comment, Kostai! The entire frontend is a static Vue.js thing built with Vue CLI that uses Webpack behind the scenes. It seems I should be able to automatically…",{"value":77,"source":46,"evidence":78},"Ethereum",[79],{"id":49,"by":11,"text":50},"unknown","launched","solo",{"praise":84,"objections":103,"requests":115,"questions":141,"alternatives":153},[85,97],{"value":86,"source":87,"evidence":88},"Easy to understand and simple to use","commenter",[89,93],{"id":90,"by":91,"text":92},"18338905","wfn","What a nice useful easy-to-use service, thanks for this, Jonai :) A comment (relevant to this site but also a more general ramble towards the direction of \"why don't sites which…",{"id":94,"by":95,"text":96},"18343482","nnn1234","Very nice.. excellent job on making the copy easy to understand. Would love to link to this project in my ongoing collection of cool blockchain stuff. Enjoy Devcon.. Also let me…",{"value":98,"source":46,"evidence":99},"Better transparency than OpenTimestamps",[100],{"id":101,"by":11,"text":102},"18336465","For now, it's very similar. The main difference is that OpenTimestamps is a bit more opaque. Basically, you get a confirmation, and then you can validate stuff on the site. I try…",[104,111],{"value":105,"source":87,"evidence":106},"Unclear how it can be free given gas costs",[107],{"id":108,"by":109,"text":110},"18337088","baotrungtn","You need gas to post your \"Release\" to Ethereum blockchain and gas costs money. How is it possible to be free?",{"value":112,"source":46,"evidence":113},"Backend has no authentication and may be DDoSed",[114],{"id":49,"by":11,"text":50},[116,123,134],{"value":117,"source":87,"evidence":118},"Open source the code",[119],{"id":120,"by":121,"text":122},"18339171","davidcollantes","Are you planning on open sourcing this? Thanks!",{"value":124,"source":87,"evidence":125},"Use Merkle trees instead of concatenating hashes",[126,130],{"id":127,"by":128,"text":129},"18336446","decentralised","Have you considered using merkle proofs? This way the data you will submit on-chain will be relatively small and stable and you can provide the proofs directly on the front-end \u002F…",{"id":131,"by":132,"text":133},"18351705","asasidh","when you say \"hash them together\" do you mean concatenate or use a merkle tree ? Merkle tree has the added advantage of being able to prove that a certain hash was part of the…",{"value":135,"source":87,"evidence":136},"Add shareable links for text verification",[137],{"id":138,"by":139,"text":140},"18336051","pentaxy","Quick glance: there doesn't appear to be a way to link to specific messages for verification - I understand it will be difficult for large files, etc. but you can probably…",[142,149],{"value":143,"source":87,"evidence":144},"How does it compare to OpenTimestamps",[145],{"id":146,"by":147,"text":148},"18336028","desdiv","How do you compare to opentimestamps.org? (other than ETH instead of BTC)",{"value":150,"source":87,"evidence":151},"Are there other existing proof services",[152],{"id":138,"by":139,"text":140},[154,158,165],{"value":155,"source":87,"evidence":156},"OpenTimestamps",[157],{"id":146,"by":147,"text":148},{"value":159,"source":87,"evidence":160},"Chainpoint",[161],{"id":162,"by":163,"text":164},"18336563","dangero","Chainpoint.org",{"value":166,"source":46,"evidence":167},"Stampd, Proof of Existence, Blocksign, BlockNotary, Bitcoin notary",[168],{"id":169,"by":11,"text":170},"18336480","When you submit a message, I locally generate a file you can download (or copy to clipboard), that contains the message, hash and the release it will go to. For text messages, I…",{"comments":32,"answered":172,"key":173},8,[174,175,176],{"id":49,"text":50},{"id":101,"text":102},{"id":177,"text":178},"18336619","When submitting, you get a binary .ots file, and no idea how exactly the file is submitted to the blockchain. The only way to verify is to re-upload the .ots file and get the yes…",{"commenters":180,"max_depth":181,"maker_replies":32,"first_comment_mins":182,"lifespan_hours":183},15,6,2,50,[185,187,189,191,194,195,197,199,201,204,206,209,210,212,214,215,217,220,221,222,223,224,226,231,233,234,236],[49,33,33,186,11,37],"maker\u002Fneutral\u002Fnone",[146,33,31,188,147,33],"project\u002Fneutral\u002Fnone",[101,33,33,190,11,37],"project\u002Fneutral\u002Fdocs",[192,33,31,190,193,33],"18336482","Kinnard",[177,33,33,190,11,37],[127,33,31,196,128,33],"project\u002Fneutral\u002Fdesign",[198,33,33,186,11,37],"18336564",[200,33,31,186,128,33],"18338924",[202,33,33,203,11,37],"18339421","commenter\u002Fneutral\u002Fnone",[205,33,33,203,128,33],"18340712",[207,33,31,196,208,33],"18339012","tromp",[131,33,31,196,132,33],[211,33,33,196,11,37],"18353456",[90,37,41,213,91,33],"project\u002Fpositive\u002Fnone",[74,37,33,186,11,37],[108,182,31,216,109,33],"project\u002Fneutral\u002Fpricing",[218,182,31,216,219,33],"18337211","crazydoggers",[55,182,33,216,11,37],[138,31,31,196,139,33],[169,31,33,190,11,37],[162,31,31,188,163,33],[225,31,33,186,11,37],"18336582",[227,228,33,229,230,33],"18336565",4,"other\u002Fneutral\u002Fnone","arendtio",[94,41,41,232,95,33],"project\u002Fpositive\u002Fdocs",[120,181,31,188,121,33],[235,181,33,188,11,37],"18339568",[237,238,41,213,239,33],"18338080",7,"21stio",[],[242,247,252,257,262,266],{"id":243,"name":244,"points":245,"category":246},"18321709","Algojammer",309,"dev_tools",{"id":248,"name":249,"points":250,"category":251},"18335723","SQL Trainer",303,"learning_science",{"id":253,"name":254,"points":255,"category":256},"18339215","Jobs Done",263,"productivity",{"id":258,"name":259,"points":260,"category":261},"18339551","InvaderZ",253,"games",{"id":263,"name":264,"points":265,"category":246},"18307747","TeXMe",209,{"id":267,"name":268,"points":269,"category":246},"18328410","Vespene",180,false,"v2",{"id":273,"name":5,"line":6,"ai":270,"cat":20,"year":13,"points":14,"comments":15,"rec":28,"s":274,"top":18,"kw":275,"maker":11,"domain":10,"tier":19,"attempts":33,"strip":276,"url":9,"mix":277,"praise":86,"objection":105,"sub":21},18335432,0.23,[24,25,26,27],"030303030033050330303005305",[31,32,33,33],1793990981383]