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: 425
Hash: 2970e20a6b1938b7a7d787a68ee7451b164de8e17d6254feaf62c3231ba4c241
Previous block: 33f86a0e584dc77d70b3d61e9ab9b13475c59d7ac590bd9967113108a1a96251
Next block: 02206a606b06783d8f31c9ffffbc2db4413f6bb8d19c37022fe1a52af7bbd23b
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864214
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 857219eaf854c42e0e1185166e39242941fd7782504cf4b9748748c9404de2a1
Median time: 1701864213
Difficulty: 4.656542373906925e-10
Confirmations: 1819
Chainwork: 0000000000000000000000000000000000000000000000000000000000000354
Bits: 207fffff