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: 1003
Hash: 3fc3c9e1067f6d540271bc3d33603ee969dafdafe7793dfe5a2a1058cbe20d8b
Previous block: 053073d845fb6de7e99ae409ead820392ebb0a83fe2d36351305d1daee6194d6
Next block: 3f140aaabcb02ed22903050afcda4d10cc170cbfb71db3d0515768154284e996
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857836
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 36409526364ee6b74e1b7eb09eba04d78cd1421b9b2cd90bcff7d4009376aa16
Median time: 1707857835
Difficulty: 4.656542373906925e-10
Confirmations: 1241
Chainwork: 00000000000000000000000000000000000000000000000000000000000007d8
Bits: 207fffff