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: 2563
Hash: 51495603334d44ef69c7252cfe5132bb1dddacd4c11361fa87c7b5e5ebceaee9
Previous block: 725c278f36f0c97337cdb5cceb71a56ae25b0aa322e8045a63b1af754b411189
Next block: 7703de48ccb3fa0c0d7a2991c882c57b1527c16f1b38cbfe716cce9c88127d7c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847314
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 09719de93f06ea7f524bfd5f7c80ab72e8c3338253ff588a1e78ce8fed550d41
Median time: 1743847313
Difficulty: 4.656542373906925e-10
Confirmations: 80
Chainwork: 0000000000000000000000000000000000000000000000000000000000001408
Bits: 207fffff