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: 1207
Hash: 5b5c4681e20478af39e8a3607c270e0d44ca6558172b609f6a9079397aca99cf
Previous block: 3ef4389283cfacfecb3436e57baec4ab36f148c6e77bc8e3232cbeaa92e8871f
Next block: 587f9e972747989098056ae6ba4f96fcc599824df152b8a39f9308879beed75e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697609
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 3757315d8bf7023a8a9d4445cac1a021e81aacc9684ab880d855b6aae84ba785
Median time: 1707857869
Difficulty: 4.656542373906925e-10
Confirmations: 1037
Chainwork: 0000000000000000000000000000000000000000000000000000000000000970
Bits: 207fffff