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: 1967
Hash: 76b9c19e2b513a5516ca750e7a42fd8ad92e6ea4d84a46adbf8fbb14c046af25
Previous block: 5335544659fc7034f6dc678b21a8055820300e175255347d2f34f204587a00f6
Next block: 6aad9d4bd1b1148e145aa00d36b3fabc3a8c4e13eb8f7d65e0cba33eb496c4a8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159251
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 6eca615e708be465e2d368a15fd1859e887691592dbf6eef008be5e985af5914
Median time: 1719159250
Difficulty: 4.656542373906925e-10
Confirmations: 277
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f60
Bits: 207fffff