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: 287
Hash: 28e9308274e75a9ae403cf5cc538954f11682016560be671d469d928c77989ed
Previous block: 6fee7a700ddf1396495b44e25da07bf3a52c6d4c213a6ac0062269f345512d31
Next block: 3d356c973f9c4073d39315441630c20f7a4ce4424080123d7ebaa438134828c3
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597915
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 9137b2e75a3671c131f2d42899e454ab13d758c91dafaa8bbef4b74a9364d995
Median time: 1701597914
Difficulty: 4.656542373906925e-10
Confirmations: 1957
Chainwork: 0000000000000000000000000000000000000000000000000000000000000240
Bits: 207fffff