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: 2439
Hash: 3d7175b7dd597caebdc583d99c1aec56b6d5a2a6f06728375716ef6c2557bbdc
Previous block: 77326dbdc25bfd85389caf4d0e6a52c1820597d4305a3dec37fe8ea8c4a30e9f
Next block: 65d299709cd07f26554fb61a57488ddd8d574e13227e4c68cfd960cfa6ac64d3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847293
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: ac60e8ec5ac98a36a810dab0cb22b38cd7a2e4b89407f46cee70d308e391eeb4
Median time: 1743847292
Difficulty: 4.656542373906925e-10
Confirmations: 204
Chainwork: 0000000000000000000000000000000000000000000000000000000000001310
Bits: 207fffff