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: 2049
Hash: 6c1b503e80a7ff911caa1d9e1f7121d1783dd2e4b808ac3c267fa51eb60aa07b
Previous block: 025a5bc74db3e92cf9e2e7fd106ec6288fea372448d0d0af948245b4a7b4bb1a
Next block: 481cfe6dc530e9ccbb4b7ab2ee23aae533513d84ece2ad54cac391282b87c52c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964778
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: c8f325a9eeb090bc0f3397fd41cf2f433929573f9cc7f3fb0c9cfcae3a631260
Median time: 1728964777
Difficulty: 4.656542373906925e-10
Confirmations: 195
Chainwork: 0000000000000000000000000000000000000000000000000000000000001004
Bits: 207fffff