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: 102
Hash: 032ef4e249b0126a3899b55339bbe0694ecf80eaf047f07b352a02e7466abaa7
Previous block: 354cbe427f8189fd951480b58b9f1f19d59a6c25a60cee5cb273f64d699360cd
Next block: 46b99bc37ecfb4c300d8ad32cfbb4850e525fd61980718db9b9657393abafa07
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597884
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: b96cc67d5e7ffbdae27961c8d1b4bd4ac0a09ab689aa7d07f17605c3ac1f0216
Median time: 1701597883
Difficulty: 4.656542373906925e-10
Confirmations: 2142
Chainwork: 00000000000000000000000000000000000000000000000000000000000000ce
Bits: 207fffff