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: 3
Hash: 7083a6f9565b75cd36e0c8333bd1ddcde8cf6bf15dfb841fe3107ab452ebc791
Previous block: 3602bb0b8fef195943f203846cc63fc09d9ef70a94918f9faa58ab59d2560f3b
Next block: 6c084c3c35b2e6b246852aa2a91a5a98fe333fe247f52970ad5177ff7aa1d28e
Weight: 864
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597867
Stripped size: 216
Size: 216
Nonce: 1
Merkle root: 0a0ffbde80f0977777bb00918f64823631bfb553f47caed2e65d63e92e7e94da
Median time: 1701597867
Difficulty: 4.656542373906925e-10
Confirmations: 2241
Chainwork: 0000000000000000000000000000000000000000000000000000000000000008
Bits: 207fffff