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: 1255
Hash: 5cbff367904675f64c13bbb29331c790b557a917982468ceb07ea87377ec0957
Previous block: 5bf987c1755dc92e09dad091375ce3e42d042818476760574f2970edbb217e9c
Next block: 19e7b88bd9204de8de806e4cc73fbc47b251c515fcdad39c8cea6347f017a62f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697617
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 67a839b95311f7cb9e8030a08a6db6f66204138e4098793d1bef33ebbd6e37a6
Median time: 1718697616
Difficulty: 4.656542373906925e-10
Confirmations: 989
Chainwork: 00000000000000000000000000000000000000000000000000000000000009d0
Bits: 207fffff