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: 1804
Hash: 27135c3e1479fcf251fe682afa78ada08b56e3eb7aaa6cc963d926134496f740
Previous block: 782b01e1b9a661ab26711a5d6ee1c542e8b48df9d38cef091efdf75be3435e0f
Next block: 685b1a392abc470b80d8959e234cd564863a57066c0339e6ec7697be4b23c592
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159224
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 1812a1b44bd399858278532eb7bd68069d11fb5ab6c3ef97ebfdef817e69561f
Median time: 1719159223
Difficulty: 4.656542373906925e-10
Confirmations: 440
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e1a
Bits: 207fffff