I had some random regtest chain state and discovered that calling RPC method `getptrblockmeta` kills spaced. Deleting regtest data folder and resyncing helped, problem no longer occurs. It seems I somehow corrupted block data, but not sure how and when it happened. I have not encountered the problem in any live chains. For the sake of completeness I paste here the data that made the crash. Steps to reproduce: - download bitcoin block data, override your /regtest bitcoin chain data folder - download spaced block data, override your /regtest spaced chain data folder - call the following ``` curl -v -X POST http://127.0.0.1:7218/ -u "your_rpc_user:your_rpc_password" -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1337,"method":"getptrblockmeta","params":["2e77e7b819849626059c55969e3179f2914331b6dd17fc92166cb4580aa08980"]}' ``` Logs: ``` [2025-12-09T17:19:52Z INFO spaces_client::rpc] Listening at 127.0.0.1:7218 [2025-12-09T17:19:52Z INFO spaces_client::rpc] Listening at [::1]:7218 [2025-12-09T17:19:52Z INFO spaces_client::spaces] Start block=2b4e388a51752f29aad7ab51a60cc771a82fc35eaac7ea9777456a89b5d1fe42 height=5292 [2025-12-09T17:19:52Z INFO spaces_client::spaces] block=542604528a7d5834e643750f924cd8df5fe386811cd1837be020df2666d3ccb2 height=5293 [2025-12-09T17:19:52Z INFO spaces_client::spaces] block=0b1ccacd2cf21aca91b21a86513452de2845ad2de4145d46bbaa5b25735fc63e height=5294 [2025-12-09T17:19:57Z INFO jsonrpsee_server::server] connection; remote_addr=127.0.0.1:54536 conn_id=0 memory allocation of 2852009279487 bytes failed Aborted (core dumped) ``` Chaindata: [bitcoind_crash_data.zip](https://github.com/user-attachments/files/24060755/bitcoind_crash_data.zip) [spaced_crash_data.zip](https://github.com/user-attachments/files/24060764/spaced_crash_data.zip)