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: 278
Hash: 70c577cff534accc37d7362e12ee7e3abe1d02fc1bb2b920d020c406155199d3
Previous block: 07a9f133ec3bd235852c9594e59a97cd0b31495714f49809aa409976e7958b9e
Next block: 7d63320c8f9fd2732d14d33dbdd1189eefa888a14da4fd36fca9b01aa98bde9f
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597914
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: ff9bb43f04c0c6922515072c8298fba2ec5c317842888434c0557d1a9451abbf
Median time: 1701597913
Difficulty: 4.656542373906925e-10
Confirmations: 1966
Chainwork: 000000000000000000000000000000000000000000000000000000000000022e
Bits: 207fffff