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: 1966
Hash: 5335544659fc7034f6dc678b21a8055820300e175255347d2f34f204587a00f6
Previous block: 7b33050ce3786ce1439e7e395952545f4ee7a275040ddc62c73a3b4a871de663
Next block: 76b9c19e2b513a5516ca750e7a42fd8ad92e6ea4d84a46adbf8fbb14c046af25
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159251
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 6846ad90a2772b7555cf9e9581f08b194958cd14b227a6a68934ed205dd86fa6
Median time: 1719159250
Difficulty: 4.656542373906925e-10
Confirmations: 278
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f5e
Bits: 207fffff