Supply Older Than 1y (BTC)
BTC supply held in UTXOs older than 365 days — a long-term holder conviction gauge.
What is it?
This metric measures the total BTC held in UTXOs that have not been moved for more than 365 days. A UTXO is Bitcoin's fundamental holding unit; an aged UTXO reflects a holder who chose not to sell for at least a year, typically interpreted as a structural conviction indicator.
How to read
The vertical axis is in native BTC, growing near-monotonically long-term (with contraction phases during major distributions). Structural growth reflects cumulative long-term-holder cohort accumulation across cycles. Decrease phases coincide with top distributions or massive custody migrations.
Key zones
There is no absolute threshold: the reference is the derivative (yearly growth) and break points in that derivative. Sustained stagnation or contraction typically indicates a top-distribution phase. Accelerated growth indicates a post-capitulation accumulation phase.
What to observe
Compare BTC growth per cycle to assess long-term-holder cohort structural maturation. Cumulative accumulation exceeding new issuance over the same period confirms structural supply pressure.
Historical context
The series grows structurally since 2009 genesis. Notable contraction phases correspond to bull-market tops: late 2013, late 2017, early 2021. The 2022 bear post-FTX collapse saw atypical long-term-holder maturation acceleration, confirming the institutional deep-value accumulation pattern.
Expert notes
Long-term-holder definition varies in the literature: some conventions use 155 days, others 1 year, others 2 years. Trinity follows the 1-year convention as the standard reference for this specific metric, while exposing full hodl waves (>10 years) in separate metrics.
Common mistakes to avoid
Growth in this series does not necessarily imply conscious holder conviction: it also includes lost coins (forgotten seeds, abandoned wallets) and coins in institutional custody immobile by regulatory constraint. The series does not distinguish active conviction from structural inactivity.
Programmatic access
REST API
curl -sS \
'https://api.trinityinsights.io/api/v1/onchain/supply-older-1y-abs/history?days=90' \
-H 'X-API-Key: $TRINITY_API_KEY'MCP server
{
"tool": "get_chart_value",
"metric_id": "supply-older-1y-abs",
"timeframe": "1y"
}Required tier: free. See the pricing grid for the tier list and the MCP documentation for multi-client configuration.
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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.