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: 469
Hash: 21a98e49df537448208c0786d5d28d66ff9453c103f7898c53212f9f32628d8b
Previous block: 29c77192c36b5f06d49b1e48330b9b8de2a7ceb7a04296f28af04d6fc676ea9b
Next block: 32de3230243f89305d28b886f083c576e9c3b99d99512e1f36abf140b6b51d48
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864222
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c7ded8c0bc4b17f4aed3ae03bbab202aafbd52cd3ff59d312b5f326329aa2e00
Median time: 1701864221
Difficulty: 4.656542373906925e-10
Confirmations: 1775
Chainwork: 00000000000000000000000000000000000000000000000000000000000003ac
Bits: 207fffff