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: 1953
Hash: 2c939b9d761be0db1993b769f88561b24607c824b00a094abd122e500c603c5e
Previous block: 60dfb28ca04e541c9e3568ced15ee266b04d49d5d5a6982251173dc47aff7f7d
Next block: 0e73b0aa4f6a832c0fb1fb8606ee04d162dbcdfebd89c6d6f78f3b038de193f3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159249
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 07b65e12f07e0bc94365a2362c0ee562f2c2cb88c4c9abfbd5a7b1b6b16a5016
Median time: 1719159248
Difficulty: 4.656542373906925e-10
Confirmations: 291
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f44
Bits: 207fffff