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: 565
Hash: 0d637e3ca5495e28cecc0cc3d2a20ced27a7588d2fb1b45158580de8ee38eb2c
Previous block: 56060e74e339b8fd10455ef4a04b39153facc9aec3336777cdcfb8b82a9c92b5
Next block: 4454585fa3878e73c22d9b39387c672c3b92d31f4f3011c08e50c4ce006e4e59
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864238
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 4da2012789ef6bb206841422a2a476f419d8415562930582b1d1fdc56d9892a0
Median time: 1701864237
Difficulty: 4.656542373906925e-10
Confirmations: 1679
Chainwork: 000000000000000000000000000000000000000000000000000000000000046c
Bits: 207fffff