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: 399
Hash: 114ef8012e37b2931cd0f46f8fd17ed60112606ec9450806321e1f02166e6e38
Previous block: 36823c0c5200b9d94499c65525b61abdc7f6b412ed213fee4c5aa5b0a8df1f03
Next block: 5566db45c2a183c6451526be960255624f44ccfd24a0c155aef68f8c8e9f709b
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597934
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: d7457bd4c0836c4b99e8ffd9b34facd7732429677765fc382adbf010971c23f0
Median time: 1701597933
Difficulty: 4.656542373906925e-10
Confirmations: 1845
Chainwork: 0000000000000000000000000000000000000000000000000000000000000320
Bits: 207fffff