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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
It's still being actively developed and you can follow the development of IELE here: https://github.com/runtimeverification/iele-semantics/ . Since Cardano is a UTXO-based blockchain, it would need to run in an accounting-style sidechain (which is still an active area of research for POS blockchains)
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