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: 584
Hash: 42d4206ba5ee63a129c1667d245eea5af7b9f81f535ab3739b3dfb02bfb1ff6e
Previous block: 1783b7e879c88cd4f481a3e96c254e37bf440add79ac4fadae6bfa70eb0fc001
Next block: 23dba67a3ed37d4f64b41d012758545605ee02c85ee72722040275aef53b4ce5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864241
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: de1b203a2add905f3ca403ed096d5d9d245f4daf151fbe30e5dcea3eb723ebe3
Median time: 1701864240
Difficulty: 4.656542373906925e-10
Confirmations: 1660
Chainwork: 0000000000000000000000000000000000000000000000000000000000000492
Bits: 207fffff