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: 869
Hash: 0288ced9ad237db125320a889f226f3f082d671ce665f561c6d2ab0315ad9956
Previous block: 3852ab2b71a0e01b0ffd7dca2806568ee1d7795aebaa35a424a491aadde7fd74
Next block: 4f0d1105033c2722816290e225c00caa81fe6af55508bc4cbb2c25540977095e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857813
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: d710f4bad037c8c3494ef44838b9c92a2cf5256fd7b6929f0b3626e646c90601
Median time: 1707857812
Difficulty: 4.656542373906925e-10
Confirmations: 1375
Chainwork: 00000000000000000000000000000000000000000000000000000000000006cc
Bits: 207fffff