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: 1867
Hash: 4e41afc57952b7ca9d796ca65c8b48d951596668061b142efdf42a9de8c0119e
Previous block: 372d2f3d5ff1d22103b32998e199a4121e0ccc191a6d7fe29c7d3e9dc577bfe1
Next block: 4ab92d6c8082cbdd5963d47d8638d51e92470634eebfc132bb8677c585e2ea41
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159234
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: f4c42f52a561195ab5dd6744ef6878da53d4260cf2e61d087d3a35036b3ed8b1
Median time: 1719159234
Difficulty: 4.656542373906925e-10
Confirmations: 377
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e98
Bits: 207fffff