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: 1526
Hash: 50ccc388c787f5dbdac1f182ea0767469e8f6d8c79258ccdebb4fba91ada63bf
Previous block: 6a0dc9fe58e9e1cc64a549d860e454a18179721889eb9f3b8e03a704836d8034
Next block: 487190204ec18c40ffdeabfb98ad15bd05b26c25825ec82d3d7a6079166e4183
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697662
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 7baef50c664effa28a104b1bfc486e9b704fa2c1e9bf53071c12979dec18155d
Median time: 1718697661
Difficulty: 4.656542373906925e-10
Confirmations: 718
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bee
Bits: 207fffff