Definition. The number of unique accumulation addresses. Accumulation addresses are defined as addresses that have at least 2 incoming non-dust transfers and have never spent funds. Total Balance in Accumulation Addresses is the related balance metric.

Technical. Exchange addresses and addresses receiving from coinbase transactions (miner addresses) are discarded. To account for lost coins, addresses that were last active more than 7 years ago are omitted as well. Incoming transfers below 0.005 BTC count as dust, but still add to the balance. Non-standard outputs are excluded.