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: 381
Hash: 381dab2f2893836b4846380efe37ad296f76579ed0ccb42cd5e9922567e42beb
Previous block: 40a596e81c2ca50c0e53097e518f86eb1fef4740c1b8cf390eb46d918c0a2019
Next block: 05f3e3f1904fb3381c1f2cf0e9786a859a8e6a0e2a28a2ece35d6da8b1e69284
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597931
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: c15155c615dbc6179b0d1c0dfdf5be3e18fc4ad104783ce803c46c8709465404
Median time: 1701597930
Difficulty: 4.656542373906925e-10
Confirmations: 1863
Chainwork: 00000000000000000000000000000000000000000000000000000000000002fc
Bits: 207fffff