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: 1741
Hash: 2886634f54c833ab08770e24615dd6054a171ceee1d8edc19017d0885fbaf057
Previous block: 3a5dace4f284a77180c9fca75d725559cf8552052cf446bc76e613be9950fc4c
Next block: 56f71377afcc6c180526d9066b83ac6e841c11b90d4a7c9f1173cf235d9e2300
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159213
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: f6da3cb0be4c6114b2885d9f737d2a1a38888b8681a404dad65f0d9207c8f5b8
Median time: 1719159213
Difficulty: 4.656542373906925e-10
Confirmations: 503
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d9c
Bits: 207fffff