Instrument
Anomaly scanner
A query desk over 14 historical leads the museum has already pulled from the chain: fee-rate extremes, ancient UTXO resurrections, unspendable scripts, giant consolidations. A full-node crawler that walks every block is the next desk. This is the catalog it would have handed us.
Indexed leads · 14 hits
max fee 291.24 BTC · max vin 20,000
No leads match that query. Relax a threshold.
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004 · blk 74,638score 100.0 Solved
A transaction created 184 billion bitcoin. The cap is 21 million. Where did they go?
Integer overflow minted 184 billion BTC. Later erased by reorg.
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001 · blk 818,087score 100.0 Probable
Someone sent $2.1 million and paid $3.1 million in fees. Why?
Largest USD-denominated fee on record; fee = 60% of input.
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002 · blk 409,008score 99.9 Solved
Someone sent 0.0001 bitcoin and paid 291 bitcoin to do it. Why?
Fee/value ratio ~2.9 million to 1. Classic amount/fee inversion.
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010 · blk 662,000score 99.0 Probable
137,000 bitcoin in apparently unrelated wallets emptied in two hours, all paying the same fee. Who had the keys?
Mass sweep of weak-RNG wallets; identical fees; 2-hour window.
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008score 98.0 Unknown
After twelve years of silence, five old wallets sent 107 bitcoin to an address that cannot spend. Then they stopped. Why?
Deliberate burn of 107 BTC after 12 years and a custodian round-trip.
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003 · blk 138,725score 97.0 Solved
A transaction paid 1 bitcoin to a hundred addresses. None of them look like addresses. What was being bought?
76 outputs are fake P2PKH whose HASH160 is ASCII, not a key.
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006score 96.0 Solved
One transaction has 20,000 inputs. Was this an attack, a mixer, or housework?
20,000 inputs — extreme consolidation, near the block size wall.
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009 · blk 965,639score 95.0 Probable
Twelve coinbase outputs from March 2010 moved in one night, 16 years late. Was it Satoshi?
12 × 50 BTC coinbases from March 2010 spent after 16.5 years.
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005score 94.0 Solved
A lock script that is just the English word “script”. Who would ever be able to spend it?
Non-standard script is ASCII 'script'; 182 repeats by block 290,000.
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011score 93.0 Solved
2,609 bitcoin were sent to a public-key hash of zero. How do you unlock a hash that no key can produce?
P2PKH with HASH160 of 0; 2,609 BTC permanently unspendable.
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012 · blk 896,088score 92.0 Solved
A 97-kilobyte PNG appeared in a single OP_RETURN in May 2025. Relay policy capped OP_RETURN at 80 bytes. How did it get mined?
97 KB OP_RETURN while public relay still capped at 80 bytes.
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007score 88.0 Solved
People keep sending bitcoin to an address that says, in English, not to. Who owns it?
Canonical burn address; valid checksum, no spendable key.
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014 · blk 230,203score 86.0 Solved
In April 2013 a transaction’s 'public keys' decoded to a WikiLeaks archive pointer. Who was the librarian?
Fake public keys encoding a Cablegate 7z pointer.
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013score 80.0 Solved
In 2013–2014 thousands of wallets received 1 satoshi they never asked for. Who was paying to watch them?
Mass 1-sat outputs to existing wallets; deanonymisation pattern.