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: 700
Hash: 62df93e410c2edece9797560e9bb9f64846d425d4c9fe13ad052235538e8b02b
Previous block: 2e63050909db4f0620981d6f3cc64ad5300df4d5d69f467311e99ee382851db2
Next block: 179b66d2a49af47f11f0f6f7b66c3b052a70856d577c914399c9765c7c93022b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864260
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f01521244b243b94eec1594dca911dfbe22c9484f10e0aec520f688db5083b93
Median time: 1701864259
Difficulty: 4.656542373906925e-10
Confirmations: 1544
Chainwork: 000000000000000000000000000000000000000000000000000000000000057a
Bits: 207fffff