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: 1890
Hash: 2c1165237e2cb45bc81d632515d8a431eac3cb48df54281a6c8559032ff58ec5
Previous block: 0647c16788d5088d040e42cc50bdee5ef7084801bfcee2fbc026a97f8f134eee
Next block: 3552842d42edc1ef430a6bb02f80eaea98dc289eedef64ec81dbfb23bad30f32
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159238
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c4125ef89440cd438bcd153691ee58ccbf8785c069a09efef8be5b84efdc9e69
Median time: 1719159237
Difficulty: 4.656542373906925e-10
Confirmations: 354
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ec6
Bits: 207fffff