aCoinDaysDestroyed
Tech spec
| Field | Value |
|---|---|
| API name (slug) | acoindays_destroyed |
| Group | utxo dormancy |
| Unit / Valuetype | coindays / other |
| Shape | scalar |
| Resolutions | block, h1, h4, h8, h12, d1 |
| Endpoints | /v2/utxo_dormancy |
| Tier | 0 |
| Last updated | 2025-08-20 17:37 UTC |
| Docs | Open in Swagger |
Brief Description: Normalized Coin Days Destroyed (CDD) by spending, relative to total Bitcoin supply.
aCoinDaysDestroyed measures the aggregate CDD from UTXOs spent in the last day, normalized by the total Bitcoin supply.
Interpretation aCoinDaysDestroyed is a lens through which one can gauge market behavior in Bitcoin. A high value indicates that a significant amount of bitcoins that were dormant for extended periods has been transferred, potentially signalling changes in market sentiment. This could suggest that long-term holders are taking profits or reallocating assets.
Conversely, low values of aCoinDaysDestroyed imply that the market is largely driven by newer coins, which may suggest a trend of accumulation.
Advanced Explanation To understand aCoinDaysDestroyed more technically, consider that each bitcoin generates one 'coinday' each day it remains unspent in a wallet. If a user holds 10 bitcoins for 10 days and then spends them, 100 'coindays' are destroyed.
aCoinDaysDestroyed = ∑(Spent_UTXO_BTC_value * Spent_UTXO_Age) / Total_Supply
where
- Spent_UTXO_BTC_value is the bitcoin value of each spent UTXO
- Spent_UTXO_Age is the age (in days) of each spent UTXO.
- Total_Supply is the total supply of all bitcoins