Coin Metrics has recomputed Ethereum's historical Standard Flow Metrics from the network's genesis block, folding in exchange wallets identified only after the fact into dates that already passed. That matters for anyone testing exchange-outflow trading rules against the old charts, because the rebuilt data reflects wallet knowledge that did not exist at the time. Proving any real effect on past Ethereum signals still requires comparing the old and new data side by side.
Coin Metrics rebuilt Ethereum's historical Standard Flow Metrics, and the change raises a timing problem for anyone who tests exchange outflows as a trading signal. The crypto data provider's October 1 notice says it recomputed Ethereum Standard Flow Metrics from the network's first block using its most up-to-date information, as part of its Ethereum Point-in-Time release. The notice supplies no revision amounts or ETH strategy comparison, so any effect on returns still needs measurement.
Why the rebuild blurs old signals
The provider's flow methodology explains the distinction. Standard metrics use every address currently known to belong to an exchange, with each address's history starting at its first nonzero balance — so past values can be restated once new addresses are identified. Its Point-in-Time, or PIT, series instead uses only addresses known to belong to an entity during the historical interval itself, and later discoveries do not rewrite earlier PIT intervals.
Coin Metrics had outlined the recomputation on September 28, expecting completion on September 30. It then posted its completion notice on October 1 at 17:04 UTC.
A CryptoQuant warning and a Glassnode test
CryptoQuant's ETH Exchange Flows documentation warns that its endpoint does not support PIT accuracy, saying historical values may change as exchange wallets are discovered, added and validated through periodic clustering updates. The provider schedules automatic updates for Tuesday at 00:00 UTC each week and says values can change slightly, especially recent observations.
Glassnode illustrated the stakes with a March 13, 2026, hypothetical backtest on Binance's BTC exchange balance. The test entered the market when a five-day moving average fell below a 14-day average and exited when it rose back above. Run over Jan. 1, 2024 through March 9, 2026 with a $1,000 start and 0.1% per trade, the test performed worse using PIT balances than using revised balances, while the signal logic, parameters, dates and fees stayed unchanged.
What proving an ETH effect requires
Glassnode's own PIT history is limited to coverage that, before July 2025, was restricted to BTC, ETH and selected tokens, expanding across all platform metrics only from July 2025. The provider has recorded computed_at timestamps since September 2024.
Measuring Coin Metrics' ETH rebuild the same way needs paired observations from the same provider and metric, with the Standard history retained from before and after the rebuild. The rule being tested must stay fixed — the same entry and exit conditions, parameters and evaluation window — so that any performance difference traces back to the data vintage rather than a changed strategy.
Source: CryptoSlate
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