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: 1977
Hash: 31386aca47a399d3e6ef1cb36458ae25ee44170e611064719bbcd01007bd4070
Previous block: 5967b604bc409d05ab8ba2632131494061af22c6838d8d4a4080cd45b8062a30
Next block: 70ad54082647bf39fb7ffcdd14752dcd3621bbb8eb7f5c3e1ebf32e99a36c004
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159253
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 2c7f10918f362a675e185053e89de53c8bcae476e7163c0833e6f6411c8dfc10
Median time: 1719159252
Difficulty: 4.656542373906925e-10
Confirmations: 267
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f74
Bits: 207fffff