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: 392
Hash: 148768d3ce62ca5387ff830bf992f3d0e51626217ba10cd2fe15581f52245c3d
Previous block: 1fb0579c07c2efc282922037147f565f0c53464c54b919ddb433032bcfa71c6f
Next block: 4b156ea8fbb7add9caf71911397be130122b9ddc4c62f2e1338a5fe8c78af20a
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597933
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 000b563d655c5bee67b5e903c54f21f5bffba0e3ecb05e5ed5d1c50e1df2c7bd
Median time: 1701597932
Difficulty: 4.656542373906925e-10
Confirmations: 1852
Chainwork: 0000000000000000000000000000000000000000000000000000000000000312
Bits: 207fffff