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: 1951
Hash: 1722ed54792c9e594d5b072412a76d68d625611820f7857608af1ccc6064e286
Previous block: 2cbcfb71111b7da04f2baa10312d56b50a58f47bb601d7b3231ce77060fc7308
Next block: 60dfb28ca04e541c9e3568ced15ee266b04d49d5d5a6982251173dc47aff7f7d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159248
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 6fc5fb92a89839ded4c513316e6e5f50273d9f5f1cdfa7eab9b82c36e4ecfb22
Median time: 1719159248
Difficulty: 4.656542373906925e-10
Confirmations: 293
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f40
Bits: 207fffff