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: 2455
Hash: 5b3596744249094b15971bdcac64725cee24d0688c6d8c450ff2d398b3626215
Previous block: 06314d239c1c3e2efa14c0aab5f83cff0fecdf56c0d3ff0995dc036dfd44f925
Next block: 267dd2b659aa84f3678d9ccb37356b6866755e550f57a2466d4be1d6b70a12ec
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847296
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: eaa7ccda3f4b378040fd9df9cca38430e4f321fbd952b79f21209c3a8a2ce9d2
Median time: 1743847295
Difficulty: 4.656542373906925e-10
Confirmations: 188
Chainwork: 0000000000000000000000000000000000000000000000000000000000001330
Bits: 207fffff