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: 820
Hash: 29ccc0ba0a8110fe5c690d5694a8577227515552baa4b94d46500df73062ea19
Previous block: 21f686832c8dacb7247a6044c2c39143f524e2eb2d13340fa91670c0635fad97
Next block: 36dd289d7dd09e113746d38cd508bf08c53d01d545db237f2a0b5cfd198e3413
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857805
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 553b7b32c6373e863a726b9e0112d129608889887a3949e3aa363c8908f2dcfc
Median time: 1707857804
Difficulty: 4.656542373906925e-10
Confirmations: 1424
Chainwork: 000000000000000000000000000000000000000000000000000000000000066a
Bits: 207fffff