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: 876
Hash: 2f4386e1876dfe951ee60bed7411000c1bba7bb64f11c888424bf77fd949296c
Previous block: 04707794eddb9258261a8abbc3614222bd790956b7df783b514d4509ca32e0ce
Next block: 7a22a8aa57c142be007d1c86a83b7097c8105a06f8797a2710203263c0e950df
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857814
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 2bf5518c7eb3f54ede308654aad91c12be2b65e770cec61107ec4808554c0428
Median time: 1707857814
Difficulty: 4.656542373906925e-10
Confirmations: 1368
Chainwork: 00000000000000000000000000000000000000000000000000000000000006da
Bits: 207fffff