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: 1934
Hash: 13313320d474019170202552c07e0a9a463008b2ae761740dc43ea499fa3fe0f
Previous block: 453ec1dff1fff11b79df4341db3f497807387a60e9e4fa644c0d6e452f0ec26d
Next block: 18622b5fae640226bafe2f1087a84c92dd082c286d025ebd1cbc3fc912825749
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159246
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 18b96bfe959af608f338a20db55bdc2426861cda737e0c08f43124adceb31039
Median time: 1719159245
Difficulty: 4.656542373906925e-10
Confirmations: 310
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f1e
Bits: 207fffff