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: 510
Hash: 211752c3f3de5ba21273743be8af52d4d12da44c88d157c30569ba7939a70432
Previous block: 26bf6b310f434a3d2f4e88536ef0a0cfd4a1fc8c4a8a738c71629a84346da907
Next block: 0050ed5dde61de12c3a011f1cfb2be700131d1c5db467a0713b090eba282de13
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864228
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 91473b7b0f69a4eaa0c2c5e240f7d71af6439cfd77a2af1fa56fb786421e0fcf
Median time: 1701864228
Difficulty: 4.656542373906925e-10
Confirmations: 1734
Chainwork: 00000000000000000000000000000000000000000000000000000000000003fe
Bits: 207fffff