Apertus is one of the very first blockchain social network implementations, from around 2014. I found their websites by scanning old block content after I was first targeted and isolated. It's surprising that their git repository has so few contributers, given they are visible in early block content. Apertus has a functional client written in C# for windows machines, and a public web portal to view and share content on. The web portal recently went down for a few years with sketchy surroundings, for me. It is up now at http://bitfossil.com/ . SSL is not working for me, not sure whether that's specific to me. (and of course memo.cash's primary compromised portal is at https://memo.cash/ ) Apertus's logo of the hand with the eye is similar to the Jainism symbol of Ahimsa. It means to prevent all harm and all suffering. https://en.wikipedia.org/wiki/Jain_symbols#Symbol_of_Ahimsa https://github.com/HugPuddle/Apertus/wiki/Technical-Details Apertus Apertus forms a network of authenticated immutable data storage and social networking on top of existing blockchains. It supports any network which uses the the bitcoin core rpc protocol, and comes with configurations for the following networks: Bitcoin Testnet Litecoin Litecoin Testnet Dogecoin Mazacoin Anoncoin Devcoin Potcoin Florincoin Curecoi Namecoin Primecoin Primecoin Testnet Dash Testnet I (xloem) glanced a little through the source code and started composing this page. Improvements are welcome. Transaction format Data is stored in a hierarchy of transactions, built bottom-up. The first layer is the archive data itself. This data is then indexed via ledger transactions, which are themselves indexed in ledgers, ending in a single root ledger transaction which represents the entire archive. Archive transactions Data is split into chunks of size equivalent to the maximum address payload size of the coin in question. Transactions contain these sequential chunks as dummy recipients. If a recipient would be duplicated, or transaction size is exceeded, the transaction is sent and a new one is begun. Transactions which would be entirely duplicate are skipped. Data is terminated by a set of actual transactions sending tips to real recipients, representing in order: keywords (#) recipients (@) vault profile / folder signature Ledger transactions Ledger transactions are archive transactions which store a text file indexing archives. The data content consists of one transaction id per line, in text. The root ledger contains only one transaction. Data Format Example File Format THIS IS A LONG TEST..TXT>00000000000022?THIS IS FILE CONTENTS.################## Example Message Format

000000000000000009*thnk you.########### Current Delimiters \/:*?"><|