Binary formats evaluation for sourmash signatures Main discussion Easy ones (serde support) bincode cbor flexbuffers msgpack postcard To check avro (need to write schema) https://github.com/flavray/avro-rs https://avro.apache.org/docs/current/spec.html#schemas arrow? easy check: https://github.com/domoritz/json2arrow Tree-buf cap'n proto rkyv bitmagic (not really a format, but for the "hashes-as-compressed vector" idea).