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: 1961
Hash: 272b4a03b36f799c0e8eea3562caff9b7033a40b36657fbda5946f41dcd8e2a6
Previous block: 533b937ee0ce81f15d9b870de0a5c584e69564f43303bc2247a181357f964260
Next block: 400b3b8801a4858a13ba32e9051f95fc9e9c5f6587442c98d460558e69d9d100
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159250
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 3cbbc08ad4ce2c0909294ed368c772ef51d6bc978549275f8e3f12031a464a13
Median time: 1719159249
Difficulty: 4.656542373906925e-10
Confirmations: 283
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f54
Bits: 207fffff