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: 224
Hash: 61f227ec09fca033eac457a7cfcf5a44785cc6ddc958d5655f4f75814d6a45e2
Previous block: 2d9227bd37db77d74ce303a84be5a5b42fddb9ebb26fbcebe9409b42163974a3
Next block: 15e57831afc07c89c60c9e0dce6643e7cbfcbe79c4d8ebed1bb5e3dbf2a9eb25
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597905
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 7ac46b888dfba943e788222d8f9d8b391014ff3cee47363ddb40dcce739ae956
Median time: 1701597904
Difficulty: 4.656542373906925e-10
Confirmations: 2020
Chainwork: 00000000000000000000000000000000000000000000000000000000000001c2
Bits: 207fffff