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: 1489
Hash: 2226df4336e5e6c114221ca84a1d2e247a2fce9437696e599e7adeab88a8f0fa
Previous block: 0f83a14082391cd8eb2b574b693342e9078525312bb55b93ad63ccae6320864e
Next block: 00f008bbd4b884054a1b4832a3f388456d691a4a0f3b1c5273e4141fd5a226c3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697656
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 2be2a1670435403129def57794bc45031816cde1809220467d18e73b2e2f748d
Median time: 1718697655
Difficulty: 4.656542373906925e-10
Confirmations: 755
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ba4
Bits: 207fffff