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: 686
Hash: 68740b66bffae51eb8d9681607b81ccc39e6be6ac88ad9c49f0bd48ede0f0d6c
Previous block: 459fb57d28095222eb997d6bb7cf02bd3fd1e303f4230f89f3237bf70a19020f
Next block: 253c66785d380d554a3449323fe0db3a12862d615ee9c1e22d013dbf50d4c4ae
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864258
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 7ad1e3b3205d36c1ceee096ec55c55fa7148e058d6c2fe441a2e676cb159231c
Median time: 1701864257
Difficulty: 4.656542373906925e-10
Confirmations: 1558
Chainwork: 000000000000000000000000000000000000000000000000000000000000055e
Bits: 207fffff