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: 1749
Hash: 7c47ecfc3cd19a0a752a6cba456bef337816bc88d952322eab59522835eebd15
Previous block: 1f94694792facd82c1500cb35654716e48974dae64cb8a2ea0f744cbac6d8b08
Next block: 35d3e04901855bd2c67a9a3a0027bb7b7f7c98401ee0f7d0a3d8456d5c7bb115
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159215
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 7fad1a86fe2a3f587597afda9e1d1a9b3828135e0b8cbfc46ff4980a13c292c0
Median time: 1719159214
Difficulty: 4.656542373906925e-10
Confirmations: 495
Chainwork: 0000000000000000000000000000000000000000000000000000000000000dac
Bits: 207fffff