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: 1648
Hash: 68c8047a83a865910a5bc1f979a6a3b234bf9d8ad1e4302294afb034bb71b8d9
Previous block: 65758adfdc5fccd6fe60e166c9672c64c6639fdc1c08604883b7d50654da4528
Next block: 42d038e2bac066ba90dc7b0718a06a4b83843af3fdd37e96a04daaf8952ed946
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159198
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 6c9233dad8502ffcc9e4cb51d479e02d0a1f0148fe9dea1401ad907fb0a9ee54
Median time: 1719159197
Difficulty: 4.656542373906925e-10
Confirmations: 596
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ce2
Bits: 207fffff