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: 2128
Hash: 531a0b0674ab9a42132181a03dcb117754d66f1d902a9a4fee392df9e3dd64b7
Previous block: 0d1569c613c0256b90e84fba0486c1ef9b710992dcfe78a0549e76300fddae24
Next block: 7ffdc68ff499277ee7a71101cb877e7c2c7a34324ea097a48323ff5ffe67178e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964791
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 6709afccac9da86fb7921938f0021e554acc531f5ceb5bf2d3dddf0d13916ff7
Median time: 1728964790
Difficulty: 4.656542373906925e-10
Confirmations: 116
Chainwork: 00000000000000000000000000000000000000000000000000000000000010a2
Bits: 207fffff