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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.
segwit (4x less weight in wU for signature) and taproot (removed signature data limits) allowed arbitrary content to be written in witness data, and potentially allowing Ordinal users to fill almost 4mB of blockspace with a single inscription (already happened), but Ord is not an update or a node software either. Ord is a wallet software, it could be compared to an Electrum server instead of a node. https://github.com/casey/ord
i agree that ordinals metadata are indeed stored in the blockchain, but serialization index on which Ordinals theory relies is not part of bitcoin protocol, and it's also easily broken: https://github.com/supertestnet/breaker-of-jpegs