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: 498
Hash: 648c538a36b073d460a85b576b0bb872d305a64d9ddbda2f24ca25e693e28753
Previous block: 65c71f5abf08d5265436e6427de58c6d06f67ca50707a15b9ac76d29ec535767
Next block: 38d8af425774d9a8d699e294b51a11df40c1a3a6423bc8f373eb35d5aef8d7c4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864226
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a9c60f4044ca20904090ee681aab4f079627aabfd3751d006b3dcc09471c934b
Median time: 1701864226
Difficulty: 4.656542373906925e-10
Confirmations: 1746
Chainwork: 00000000000000000000000000000000000000000000000000000000000003e6
Bits: 207fffff