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: 1944
Hash: 2404154000f0cda58241511c1fe9586d1400436e1eb2c12b3af2a49abc9cab3a
Previous block: 164b0ce376e14eb6308b2d710fda2c9e8d4fef1433b5d79c2297937406ed732c
Next block: 1872146a3127cc675ba57f73764d227e80654448a1d03ac3cae7b7e3ba3f5e8e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159247
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 941e7e1f5a35e78de0d48bb7b0c6cd1772941f19f5cb34dc95255c3db18c7316
Median time: 1719159246
Difficulty: 4.656542373906925e-10
Confirmations: 300
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f32
Bits: 207fffff