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: 1889
Hash: 0647c16788d5088d040e42cc50bdee5ef7084801bfcee2fbc026a97f8f134eee
Previous block: 787fc036020c1c1787282ed73727853f5528f2c3a33019591207be96d56e89ab
Next block: 2c1165237e2cb45bc81d632515d8a431eac3cb48df54281a6c8559032ff58ec5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159238
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: ddeb848c1e7a763156a2dd2a305d44f956f54035d1ffcc0fe60a52dbd7cebf17
Median time: 1719159237
Difficulty: 4.656542373906925e-10
Confirmations: 355
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ec4
Bits: 207fffff