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: 547
Hash: 6e7f92e352de4b589300e1ff6a5120ae23b6fcb130d6ee14825c1c889889c5ce
Previous block: 1fc7e922145873e522df3b511b0f82b0570b56cbdecdf2974c97ff0cfd2b3dab
Next block: 681c177a600ca1ec154126220f0da1326ecc6aa0102a0c927e62c5f1f5937dc8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864235
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3b6039f83d2d7ddf06e39a463d134efa004251ee2b0b3dd7f260791368684730
Median time: 1701864234
Difficulty: 4.656542373906925e-10
Confirmations: 1697
Chainwork: 0000000000000000000000000000000000000000000000000000000000000448
Bits: 207fffff