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: 394
Hash: 0ffcf105781df88b4c85baf2272546f3023334c51afa18a7a78798d68aae3adc
Previous block: 4b156ea8fbb7add9caf71911397be130122b9ddc4c62f2e1338a5fe8c78af20a
Next block: 3510a522618afbd3c045165c0327b8cba5f86da983f62ea64872e1ddd2988fda
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597933
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 011f746944e8c97a1b385c861e95a4ded68de6c085993254791164c19522b1d2
Median time: 1701597932
Difficulty: 4.656542373906925e-10
Confirmations: 1850
Chainwork: 0000000000000000000000000000000000000000000000000000000000000316
Bits: 207fffff