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: 471
Hash: 637104cca9d928f919a4ff2d4b457a37f91758ce4a0f20707def5497e1e5e1b2
Previous block: 32de3230243f89305d28b886f083c576e9c3b99d99512e1f36abf140b6b51d48
Next block: 543e566ed5a97b6e9d6c81779988cd6c79a986f61ae3f2a35dbb1402f6786c4f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864222
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: aab37139c957bd0050b34ae8123362b83f3b4830219aadc4db685427a899fa81
Median time: 1701864221
Difficulty: 4.656542373906925e-10
Confirmations: 1773
Chainwork: 00000000000000000000000000000000000000000000000000000000000003b0
Bits: 207fffff