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: 2245
Hash: 6ef025d4f87d7aae61e7602f94db8ed7b2f9cfe9ab315d9dfe45b36a87012133
Previous block: 3bd6921ec99f313320a6452c09b157035323d4199da77fa5d74e9e876c82e742
Next block: 4c6df3e7d86f71d23405d48d4c8d3ea6bc709ccffc114969bf7dd2b43ddf8646
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847261
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: bfe34748e550887aa1969b89680457a3f1048d2dacd80a2fdafd7b58541a8b89
Median time: 1728964810
Difficulty: 4.656542373906925e-10
Confirmations: 398
Chainwork: 000000000000000000000000000000000000000000000000000000000000118c
Bits: 207fffff