LTH Spent Output Age
Average age of outputs spent by long-term holders (>155 days). When this metric spikes, veteran holders are moving old coins - a key distribution indicator at cycle peaks.
What is it?
LTH Spent Output Age isolates the average age of UTXOs put in motion by long-term holders (the LTH cohort, coins older than 155 days). Unlike the global ASOL which mixes every cohort and unlike MSOL which takes the median, this metric focuses exclusively on strong-hands spending and answers: 'among the LTH who are moving, how old are the coins they spend today?'. It is a pure distribution-pressure indication, stripped of STH noise.
How to read
The metric is expressed on a time scale (days or years depending on the active cohort). A rising value means LTH are spending increasingly old coins - historically a late-stage bull-market distribution indication. A falling value indicates active LTH are selling young-LTH coins (near the 155-day threshold) while keeping their oldest coins - typical of neutral or accumulation phases.
Key zones
No absolute thresholds - the metric is a trend. Watch inflection points rather than levels. A rapid push after a stable phase is the most actionable reading - it historically precedes the heavy distribution phases of cycle peaks.
What to observe
The crossover with global ASOL is instructive: when LTH Age rises faster than global ASOL, it means LTH dominate the motion and veterans are redistributing. When ASOL rises but LTH Age does not, STH are churning while LTH stay quiet - a retail-FOMO pattern without LT conviction.
Historical context
Major LTH Age surges coincided with the late phases of the 2013, 2017, and 2021 cycles - preceding tops by several weeks to months. Bear market phases generally show stable or declining values, as active LTH prioritise selling their youngest LTH coins and keep the oldest ones.
Expert notes
The metric is derived from the daily age distribution of spent UTXOs, filtered on the LTH cohort (>155 days). The pipeline computes the BTC-volume-weighted average - not the USD-weighted one. A USD-weighted 'Mean Dollar Invested Age' chart will be added in a future iteration as a dedicated series. Do not confuse the two.
Common mistakes to avoid
LTH Age does not measure the conviction of dormant LTH - by construction it only sees those who spend. A high LTH Age therefore does not imply that 'all veterans are selling' but that 'among those who sell, coins are very old'. Directional interpretation requires volume context (coins-moved count) from CDD.
Programmatic access
REST API
curl -sS \
'https://api.trinityinsights.io/api/v1/onchain/mean-dollar-invested-age/history?days=90' \
-H 'X-API-Key: $TRINITY_API_KEY'MCP server
{
"tool": "get_chart_value",
"metric_id": "mean-dollar-invested-age",
"timeframe": "1y"
}Required tier: pro. See the pricing grid for the tier list and the MCP documentation for multi-client configuration.
Related metrics
Institutional disclaimer
Trinity Insights is an educational and analytical tool. The metric above does not constitute investment advice. Trinity Insights is not a Crypto-Asset Service Provider (CASP) registered under MiCA Regulation (EU) 2023/1114. See the full disclaimer.