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: 1897
Hash: 2726f5c2b37b4a284b97dfc5d2da336cd3f2f338f8770091eedcaa8986b1c2b6
Previous block: 52cef971f2639871e34c7258bd08dfe0279ce6b1e3797fb95df6be09d2fc5aee
Next block: 2adbfc250b0650ffdcec4956453a077605a1a22e7fa71955d9ea8a0e13e31df2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159239
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 286d97912025dccd319dfcd76139b3030b73257e38cb98c3a766731efeb80a81
Median time: 1719159239
Difficulty: 4.656542373906925e-10
Confirmations: 347
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ed4
Bits: 207fffff