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: 1139
Hash: 628d0d67c332fed225ec69204b2414b281eb283ffb2e206b11134faa5b25a3f9
Previous block: 08534b0af073f47cb124e855eaaa68f1a5912315b6ce66b5e3105d29de1d14c7
Next block: 3994d33d8ca341a311e4799002cf148a261c608b33f478f1f90a0986f1237c25
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857858
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 93fed5868d29f721e6231a8968f7177726e2a0c19d3cf4a3449756edb72469b2
Median time: 1707857857
Difficulty: 4.656542373906925e-10
Confirmations: 1105
Chainwork: 00000000000000000000000000000000000000000000000000000000000008e8
Bits: 207fffff