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20260731-coldcard-entropy-crisis/notes.md

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+# Coldcard Entropy Crisis
+
+Coldcard entropy has been fucked for years:
+
+- https://engineering.block.xyz/blog/predictable-rng-fallback-and-32-bit-reseed-in-coldcard-firmware
+- https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/
+- https://itsrealfake.github.io/2026/07/31/coldcard-rng-vulnerability-analysis.html
+- https://nostr.blue/nevent1qqsxt6lahxeq8h69ne78w6ls394ez5pqycguwrsp89tacwteh7878cczypftfgrkhjammsap4marwdvpdnm5nya3hrdjq2cpezputzl8ltvt6qgdwaehxw309ahx7uewd3hkcqgswaehxw309ahx7um5wghxcctwvsdk5xh4
+
+I need to move stuff out of Malasaña into Millenium
+
+## Migration notes
+
+### Starting state
+
+I have saved a copy of the wallet before starting the migration so that it can be used as a reference. If used offline, it allows to see what the wallet looked like before moving stuff around.
+
+State of accounts before moving:
+- malasana account: 	0.21229922 btc	4 utxos
+- arbret account:	0.21874886 btc	7 utxos
+- MarmasPickaxes:	0.07235574 btc 	6 utxos
+
+### Plan
+
+- Use the plain account in millenium
+- Pack utxos using jittery, multiples of 2 amounts
+- List transactions here
+- Backup the old wallets
+
+
+Exact UTXO mappings and amounts are in mappings.xlsx
+
+First txid for moving the malasana account: 1825e4d8345b7289a749d158fdcc73aebec9e1301ed0fd723af7d06d10f7b4bc
+
+Second txid for moving the arbret account: