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: 1793
Hash: 27f85d67fea697337864aded6cef9b6daf39297e54c010b4cb13d798630b83ee
Previous block: 36bf2beb9d21b07bdcf6c2616b6199afc6c60c2518dd24f391886bbe09e50f1c
Next block: 58a1aeced651977351652c0e40034b72d5139162f88b3bda77304f5adbf51f49
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159222
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 95c95597b344b88c1bb26b5a0a3ee13891ab4ea18fabe6fab47349648fd87f36
Median time: 1719159221
Difficulty: 4.656542373906925e-10
Confirmations: 451
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e04
Bits: 207fffff