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: 1475
Hash: 3ec02725c300fe704f35441769fad2edd882d56cae2f46a767375649c0729ef1
Previous block: 737c9f9b71947ecf9323538322f6776f4cb774c95e36395ef6c13353de561811
Next block: 7332226a58ed23d672063790c0b2d500dcf0e5bae837acdf65f4387f381da260
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697653
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: b00d59858855fd0422112226f38b3af5b5f89b8cbfd8dda33ded0e5bad6d9a89
Median time: 1718697652
Difficulty: 4.656542373906925e-10
Confirmations: 769
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b88
Bits: 207fffff