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: 174
Hash: 0bf7b1b4d3f79fb451ebec7e7d2b304893b349f030cae8226eecb5c69b91f642
Previous block: 3fa06d77b28bbc869a03ad505f84ee9beac730861aedf9f320916f9781125fac
Next block: 318c6ac35ea5356fa268917ecb2ff6b3772f11dfa6d10d0e7d1177f5f3d8b27c
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597896
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 343e7086c2a53a319d6d19f517888778dd4f09b3fc26371bda7f4ea93b393d30
Median time: 1701597895
Difficulty: 4.656542373906925e-10
Confirmations: 2070
Chainwork: 000000000000000000000000000000000000000000000000000000000000015e
Bits: 207fffff