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: 1676
Hash: 51d5bcc65e2073adcb0a6c3a55d502b90790a4b0a42e0d5817aae684101522c2
Previous block: 5ad7e3e9f88e56c5022c014f693ac845ebf3966b5d5e3e0cbfcd75531dd077c9
Next block: 231ae8ce94feef44534c74af2b2ccca25eb2ec73d53696e3e2059f444278427e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159203
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c63073000e000605cb452d25b4ca20010f735140e5ccf675d8bb394e418494d2
Median time: 1719159202
Difficulty: 4.656542373906925e-10
Confirmations: 568
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d1a
Bits: 207fffff