history 3.5.0 (3 days ago) balance fsf-libre osi-approved bsd-3-clause Dart 3 compatible blockchain_utils Comprehensive Crypto & Blockchain Toolkit, Pure Dart, Cross-Platform, Encoding, Cryptography, Addresses, Mnemonics, & More. 16 likes 0 posts 0 links Dart Flutter Android iOS Windows Linux macOS Web cryptography schnorrkel substrate blockchain bip