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: 1993
Hash: 2a6de308075dcfefb8145f281d3ffccb68062e6ea6f6676dd83e3bed5a000407
Previous block: 4b1c1b8ab5be76bd813b06408924380ee2c61301bf8e64870cbc9f27f7559a88
Next block: 162fef885cde6a456ca827dac650cfd9cfc285ab1329e7443c7758c8691c8f7f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159255
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a73a281f0452f7585895a85913929ea4192db2014b28ef9db6364f7a1d456fad
Median time: 1719159255
Difficulty: 4.656542373906925e-10
Confirmations: 251
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f94
Bits: 207fffff