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: 1008
Hash: 15d98d1d81130cf1fdd69af122fc1e90fb869a918a1b66c8935736bfe971351f
Previous block: 444b98802637e12cf3703ceb74a5422426c4e921d5568eb9729a5506954dac51
Next block: 75fd13b91dd13f2e8fc0342b1fc2e5a20f72e475d22c875b1932e9c3bb38ba1c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857836
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5746a2b0ceb76786554dcbb3888973a9095deaf9940f5ec322612a8393f113d5
Median time: 1707857836
Difficulty: 4.656542373906925e-10
Confirmations: 1236
Chainwork: 00000000000000000000000000000000000000000000000000000000000007e2
Bits: 207fffff