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: 434
Hash: 2df6e21151a6ead356b25ad21696b9d2378087ca35978004ee894ab592a8a25a
Previous block: 4335558b07eea0bf52b9dbabe9538664dd900284d7096518caef622abfab290c
Next block: 1d1065981502874d3511145c8265cdf52a77e834c3a7807b804ab6d93c204715
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864216
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 6016ec9425c3315cc184723816f16a52f564b1d94853122b4884317d06772c0a
Median time: 1701864215
Difficulty: 4.656542373906925e-10
Confirmations: 1810
Chainwork: 0000000000000000000000000000000000000000000000000000000000000366
Bits: 207fffff