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: 286
Hash: 6fee7a700ddf1396495b44e25da07bf3a52c6d4c213a6ac0062269f345512d31
Previous block: 0f0dbbd49f1daf662094e45e61ad0cc4b42c86dcca1ae73976c8a963f22f5238
Next block: 28e9308274e75a9ae403cf5cc538954f11682016560be671d469d928c77989ed
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597915
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 148b25627cf2a0c9d51886680454e67052fabfc211c862c63aece7a9077b5401
Median time: 1701597914
Difficulty: 4.656542373906925e-10
Confirmations: 1958
Chainwork: 000000000000000000000000000000000000000000000000000000000000023e
Bits: 207fffff