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: 158
Hash: 57e047a9c842fcf3d2cf9f95a68e0bdc91d53f2ebaf50e60732d5153b04e8ac7
Previous block: 4eaa10ff9872504d244a79313b68147d29832c8d9f988a4096c6edd49e38edeb
Next block: 1b404f970b1c1a1b2d4df9ca5fcc11166544ab5de1ed1b8847c5832b0ecaa95f
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597894
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 53f50fabe3b4003f8894ec41ab81b2d87ed5a90dd2d43473d6df63f3e7cf169d
Median time: 1701597893
Difficulty: 4.656542373906925e-10
Confirmations: 2086
Chainwork: 000000000000000000000000000000000000000000000000000000000000013e
Bits: 207fffff