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: 1886
Hash: 659d3a5b568da59ad5725ef0954ad7708ee37f1f3558332a5293a5e6de78199c
Previous block: 0d5da966eb908cfabb63f6f77ba1872242bab2fdd41562ae14101883e191691e
Next block: 55c30ccb67908bdd721defb214f9573125a43111257945421bbba027915863c1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159238
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: dffa20b94d94f5b60ddb3a32b6edf53f1afd4cb5e1e5d5aa8a2c0058a2abe6ea
Median time: 1719159237
Difficulty: 4.656542373906925e-10
Confirmations: 358
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ebe
Bits: 207fffff