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: 2073
Hash: 58dcdbc024e00ecbe011bb4edef92a42b8ceccf3bd279c6e742ae79bf297f5b4
Previous block: 2d8e06d3ebceee06460b27d79a7c4b48ff217b87ca3fec2305e987e1be3d38a7
Next block: 00add7dab2da497ec5e96b6dec90db0dc01bdc8c133fb360d4709a22ff3e4dac
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964782
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a4b775d07c3bbb179ae9dce658bea2789aebf4286c898eefec7d917ab59ed3fb
Median time: 1728964781
Difficulty: 4.656542373906925e-10
Confirmations: 171
Chainwork: 0000000000000000000000000000000000000000000000000000000000001034
Bits: 207fffff