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: 2555
Hash: 3678f0527b35ae4c55a7159240734f4aa8d26c9fba0a9504e7f2f6dcdc335bf8
Previous block: 734016b97504a58dc4890cb2e47dfaaca30f794c03092bfda83230024fe54696
Next block: 0eed231f8b2c1cad7838972f43f1349f12eaa64780375b74c825e95c71fcd937
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847312
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d4f1ba856d260de44369cf7eba17fbb5a2792518fbaeff3b8acceef2c74a848a
Median time: 1743847312
Difficulty: 4.656542373906925e-10
Confirmations: 88
Chainwork: 00000000000000000000000000000000000000000000000000000000000013f8
Bits: 207fffff