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: 1868
Hash: 4ab92d6c8082cbdd5963d47d8638d51e92470634eebfc132bb8677c585e2ea41
Previous block: 4e41afc57952b7ca9d796ca65c8b48d951596668061b142efdf42a9de8c0119e
Next block: 68cbff97f61684a4b9f9924375df4c27b75dc430b27ec2ac97d5ccb2f4c52792
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159235
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3990c84321bdcc068f4928647f1b6540410765e776614d6164806542e5bb1ca0
Median time: 1719159234
Difficulty: 4.656542373906925e-10
Confirmations: 376
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e9a
Bits: 207fffff