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: 2506
Hash: 71f145e476cbd937ba6315a65ea658967dbdb3aa50a1afac82221416651de2b6
Previous block: 317a2cadc49295687d4ff540fe7b7f413b380eddb48535a47d3e57383bf22f25
Next block: 6ee532258329b3053c5f1e7cb70858c0bfa590cdd41e611efadc9844aa4f52ee
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847304
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9165481b8a1317caba4f4201658381ee77bb6ed542a09e07e408fc22cedd721e
Median time: 1743847303
Difficulty: 4.656542373906925e-10
Confirmations: 137
Chainwork: 0000000000000000000000000000000000000000000000000000000000001396
Bits: 207fffff