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: 1735
Hash: 61970e82bfef4091e815ee46c9ae96047ba4b9b2db9dabdf4032e04e8f75ee95
Previous block: 78634a574c5a75abe91a0dea5eefc926d06eaf22ddcf331d2e9e9599d5a2d563
Next block: 007ab788c09d07fc205f7d0fe1b90ff8373ba4f9e80395768349ebfd1fde8a4c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159212
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 766956ebcb6e7045b0139e35ff8ba478d7b2226ff18eece2d848eafe191e4950
Median time: 1719159212
Difficulty: 4.656542373906925e-10
Confirmations: 509
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d90
Bits: 207fffff