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: 340
Hash: 7b40ce355d1c9d79eaede0b1dedc6c23944c7c8d05955e93dd30926ab14d00df
Previous block: 43452ef66f9bad8bb1905fcd996e16d387d310969fa81d985ce2ef5589b5d63f
Next block: 7779bdcc6f9fdfe273e93258d033fe2024fe892bccf260b5ab10bb78ed635818
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597924
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 49a728577fe1cbd39917d89b8642edf3fe0de399f629f1387766e168770a5e3a
Median time: 1701597923
Difficulty: 4.656542373906925e-10
Confirmations: 1904
Chainwork: 00000000000000000000000000000000000000000000000000000000000002aa
Bits: 207fffff