A read-only observatory of long-dormant Bitcoin. Generated 2026-08-21 19:00 UTC from mempool.space (chain tip 963,477).
Age bands - watched addresses only
This is NOT the whole supply. It buckets the watchlist above by how long its coins have sat still. Whole-supply "HODL waves" require scanning the full UTXO set - that arrives when our own Bitcoin Core node is synced (see the E2.3 decision note in the repo).
Undated (never spent, and no funding date we'd defend yet): 28,153 BTC - deliberately kept OUT of the bands rather than guessed into one.
80,015 BTC of the banded total is dated from curated public records (marked ≈ below) rather than a live on-chain spend.
The watched stashes
1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
Block 0's reward address (block timestamp 2009-01-03, verifiable in any explorer). The original 50 BTC is unspendable by protocol quirk. Receives constant small 'tribute' sends - a live example of why dormancy is measured from coins moving OUT, not from last touch. Balance shown includes ~7 BTC of tributes received over the years on top of the original 50. Mined by Bitcoin's creator by definition of block 0; we label ownership 'Satoshi (by definition of genesis)' rather than tying it to any real-world identity.
65,490 txs on record · balance & spend status read live from mempool.space
12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJX
The reward address of block 1 (2009-01-09). IMPORTANT CAVEAT this tool caught on first run: the actual 50 BTC coinbase is locked to the raw public key (P2PK, the 2009 style), which explorers do NOT attribute to this modern address encoding - so the balance shown here is only later 'tribute' dust sent to the address form, NOT the famous coins. The 50 BTC coinbase itself has never moved (verifiable via the block 1 coinbase tx), but since the visible balance is dust of mixed ages we refuse to band it - undated by the E2.3 rule. Early-2009 blocks are widely BELIEVED to be Satoshi's via the Patoshi extranonce pattern (Sergio Demian Lerner's research) - pattern-based inference, not fact.
228 txs on record · balance & spend status read live from mempool.space
12cbQLTFMXRnSzktFkuoG3eHoMeFtpTu3S
Reward address of block 9. On 2009-01-12 (block 170) its 50 BTC coinbase funded the first person-to-person Bitcoin transaction - 10 BTC to Hal Finney, documented in the original cryptography mailing-list exchange. Same P2PK caveat as block 1: that coinbase and its famous spend live on the raw public key, invisible under this address encoding, so the API reports 'never spent' and shows only later tribute dust. The dust is of mixed ages, so no band - undated by the E2.3 rule. A good reminder that even 'verify it on-chain' has encoding traps.
128 txs on record · balance & spend status read live from mempool.space
1FeexV6bAHb8ybZjqQMjJrcCrHGW9sb6uF
Funded with ~79,956 BTC on 2011-03-01 and no outgoing spend since - one of the most-watched dormant addresses in existence (the chain confirms: never spent). Balance includes ~1 BTC of later tribute dust on top of the original deposit. Ownership stories (Mt. Gox cold storage among them) are UNVERIFIED folklore; we track it as documented-dormant, attributed to no one.
689 txs on record · balance & spend status read live from mempool.space
12ib7dApVFvg82TXKycWBNpN8kFyiAN1dr
Accumulated ~31,000 BTC in May 2010 and frequently cited on dormant rich lists as 'never spent' - but the chain disagrees: this address HAS spent at some point (our first live run caught the folklore being wrong). This tool pages back through its history to date the most recent outgoing spend on-chain; ownership unknown.
267 txs on record · balance & spend status read live from mempool.space
12tkqA9xSoowkzoERHMWNKsTey55YEBqkv
Widely listed among the largest never-spent 2010-era addresses, and the chain confirms: never spent, balance ~28,151 BTC. We have NOT yet pinned its funding date to a source we'd defend, so per the E2.3 rule it stays undated and out of the age bands until we do.
224 txs on record · balance & spend status read live from mempool.space
Recent awakenings
The wake-up watcher diffs every run against the previous one. A watched address counts as "awake" when its coins move OUT: a first-ever spend, a newer outgoing spend, or a balance drop - on an address dormant 5+ years (undated never-spent stashes always count). Incoming dust never counts. Watching since 2026-08-17, 10 snapshots so far.
No awakenings detected yet. Every watched stash has sat still across every snapshot since watching began. That quiet is the real data, not a gap - and when one of these addresses does move, it will show up here with the block-explorer link to verify it.
Snapshot history
Every dashboard run stores its numbers; the wake-up watcher above is literally the diff between consecutive rows.
| as of (UTC) | watched BTC | 10y+ band BTC | undated BTC | addresses |
|---|---|---|---|---|
| 2026-08-17 06:34 | 139,168 | 111,015 | 28,153 | 6 |
| 2026-08-20 23:10 | 139,168 | 111,015 | 28,153 | 6 |
| 2026-08-21 01:05 | 139,168 | 111,015 | 28,153 | 6 |
| 2026-08-21 01:06 | 139,168 | 111,015 | 28,153 | 6 |
| 2026-08-21 16:42 | 139,168 | 111,015 | 28,153 | 6 |
| 2026-08-21 16:55 | 139,168 | 111,015 | 28,153 | 6 |
| 2026-08-21 18:03 | 139,168 | 111,015 | 28,153 | 6 |
| 2026-08-21 18:07 | 139,168 | 111,015 | 28,153 | 6 |
| 2026-08-21 18:38 | 139,168 | 111,015 | 28,153 | 6 |
| 2026-08-21 19:00 | 139,168 | 111,015 | 28,153 | 6 |