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: 63
Hash: 77aaada01eba99c07c36b732c86e1d09f1f316cff714a03f227e96c149cb89d8
Previous block: 2f3b553704cced3126043c70add6e097f07f30485d8c3bed005378bdf438f046
Next block: 161bb216f16aa6414efe78d144562c3a417861612cf5ef309901c1708df69624
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597878
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 06035c1b0fee831768bb2c3a39c644fcf747ceb2d30f5764ffc13a865ba2a24b
Median time: 1701597877
Difficulty: 4.656542373906925e-10
Confirmations: 2181
Chainwork: 0000000000000000000000000000000000000000000000000000000000000080
Bits: 207fffff