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: 2558
Hash: 6bda1de66f0cbb8c21ad1b324ac4bb6f8623dea8cdbf970640e1c1b0fe29137f
Previous block: 4128e0621d7ab37a361ac97d72bd947d42365e9ff87d02c9aa44a89efe59f166
Next block: 116136edf989531b0e1f759da1263d749ac38a5a4db3951cc8c2f53f307cb964
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847313
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8b8d540714688a0c67408b6079834d05b00078057b5a3f4281a5e6b278883220
Median time: 1743847312
Difficulty: 4.656542373906925e-10
Confirmations: 85
Chainwork: 00000000000000000000000000000000000000000000000000000000000013fe
Bits: 207fffff