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: 894
Hash: 4082d7e1062f914006a6c338a25909a569357a0522dd52945f18cb3d9efa9f2d
Previous block: 2c1d1f503b9640ec0a6220136a6c231d0bb88f286478313a46c47f8354800514
Next block: 5bb0e86c1ab5bb10e70c064dc7e59b00abe807ac90bcb84feb22b81a5d8a66c3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857817
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 13da0e4409ca9e3c1f5d1097f44e7a0520720e4e25090f23c892f48c187a0f0a
Median time: 1707857817
Difficulty: 4.656542373906925e-10
Confirmations: 1350
Chainwork: 00000000000000000000000000000000000000000000000000000000000006fe
Bits: 207fffff