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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 2126
Hash: 651314b1d608733563546224e855abb9fb70c045a8243df733ff2980ba200e31
Previous block: 7239dd8d614df1a77b0ee485d7ac0f6933fd32952d96e74a6d3cfe90270bc6f9
Next block: 0d1569c613c0256b90e84fba0486c1ef9b710992dcfe78a0549e76300fddae24
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964791
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 32993da4d67293221659db3233dbc33c1611525ae012aed35b4c27dea168bdb2
Median time: 1728964790
Difficulty: 4.656542373906925e-10
Confirmations: 118
Chainwork: 000000000000000000000000000000000000000000000000000000000000109e
Bits: 207fffff