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: 1251
Hash: 230ee58a80acc3c8f4f0a3d8d5b400640710b90f6bb22601a1a36971fab2a3db
Previous block: 622dbe025de077349e13f1dbbadc28dbe6c2402d10af52e7e5b765c40a6b715f
Next block: 68bea5359396f24dfca128b21d589598f47fbf30f5ead16a2084c9526bbd0af4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697616
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 25130068eab710bbc83e704c850cb292b4cb33c1704d88d60ba37cc9c733721e
Median time: 1718697615
Difficulty: 4.656542373906925e-10
Confirmations: 993
Chainwork: 00000000000000000000000000000000000000000000000000000000000009c8
Bits: 207fffff