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: 1012
Hash: 73f9806f5ceffb4ea1931d863286f57f4216461db057e242c723c2ee9d71c092
Previous block: 3582bafdbcd1e978429009f8a026ce0450498ca48a10566679b8703912fd737f
Next block: 52a648833dc792d69e913a7151dbd735537b91f3a185acea00b3efffd5b120c3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857837
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 4c0fcc1ea65e3c82f88398d73a09182c53afad5d5550cdfcac0c3099ec5f5847
Median time: 1707857836
Difficulty: 4.656542373906925e-10
Confirmations: 1232
Chainwork: 00000000000000000000000000000000000000000000000000000000000007ea
Bits: 207fffff