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: 105
Hash: 3863bf7e418b52ef7fa24259846dba62a26cc75e0858322046b69e112e4072e0
Previous block: 725d6f55520d202ef307cb119393572253ab40c8feb6ace02466780e7e943c77
Next block: 02e6912b026c1445cf45ea704d7dc07d2073287ad011fdbb4047f474d78dc832
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597885
Stripped size: 217
Size: 217
Nonce: 6
Merkle root: 7b9b5de3fd092ba25a8fe390060ee7c45b67d0668f02849f9fec722edeba329f
Median time: 1701597884
Difficulty: 4.656542373906925e-10
Confirmations: 2139
Chainwork: 00000000000000000000000000000000000000000000000000000000000000d4
Bits: 207fffff