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: 2149
Hash: 73c32fcbd32431b64d95bb88171e7135d1d97330442018f667acef340885d865
Previous block: 24c9099cdf00124f985cabfad222afb2d94ea840a8c4aa4558d66a0f7bb9833f
Next block: 055503d35df7467044162d4d50aed0a960cf3a155ced62f33466909f7791808f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964795
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 08ff5f6e66d8f49ecbea4dc2462848a49880a2b74ca866b8378f0f9c1f53484f
Median time: 1728964794
Difficulty: 4.656542373906925e-10
Confirmations: 95
Chainwork: 00000000000000000000000000000000000000000000000000000000000010cc
Bits: 207fffff