The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 440
Hash: 51c9d3abda0a54d5c99680db13eadfa673ca1d788810edef4d090964c39ad9a5
Previous block: 6181b6538c4cccd75042b76de1a3612cc8f9d547120a794c7b1fbc00389f3759
Next block: 59ef54aeeeeeffbfae8a43b7fba49b9a0ca6fb32724f0dce3048ab79bd017f68
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864217
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 85b7f68646cc4eee62c3c9f5457ecd4cb055d658f57ccdb1aba645094cc0e4b4
Median time: 1701864216
Difficulty: 4.656542373906925e-10
Confirmations: 1804
Chainwork: 0000000000000000000000000000000000000000000000000000000000000372
Bits: 207fffff