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: 2474
Hash: 6256d069fd26bbd75a23c36198d3f886c0290f79c78337264fb460a9760eb19f
Previous block: 12e471637eed9249040fa035b66f34473dde4acfb195dda9bd687dc1fc33a1d5
Next block: 707ec5e22a051ffb64e13f8312f8ab2a1a528d7056411f5ea5e3fd4877509f4d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847299
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 85b6a4d01e435ac01c77820108d4da859f708622ba83eb5602aae1f91e54e0a2
Median time: 1743847298
Difficulty: 4.656542373906925e-10
Confirmations: 169
Chainwork: 0000000000000000000000000000000000000000000000000000000000001356
Bits: 207fffff