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: 1034
Hash: 39a87b25253471e3d633f8d46529dc157dca3f89eaad5c46173524f891a53239
Previous block: 761b9dabaafed818730a6d7680fabc52941be4ba481eca66951d45e2e5572c89
Next block: 7fb91a7d074ee50c375a65b15ea060045654b1f98633b7849f924430adb55002
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857841
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 275fc9eaac124cf8bdfb3e590592f9eed645e4c66fcc2089540ec9cf49b6f897
Median time: 1707857840
Difficulty: 4.656542373906925e-10
Confirmations: 1210
Chainwork: 0000000000000000000000000000000000000000000000000000000000000816
Bits: 207fffff