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: 375
Hash: 26657e81e8681bc31ce8853a60eec84a3869f0573f2e91d572bd77c3a27ae4aa
Previous block: 31d053e94ac8093aa3bb595046783780f2f099b1f20632c4e48e189c09c2af91
Next block: 0b1c1e07f0c452760e4534482efe9fc6390a0cb5d53993f0aa8875e0720f07b2
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597930
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 4ae3bc0d3c5bbeed6eda0039115faae5c799dc0a82dca0a32b3aaabf83a02c4d
Median time: 1701597929
Difficulty: 4.656542373906925e-10
Confirmations: 1869
Chainwork: 00000000000000000000000000000000000000000000000000000000000002f0
Bits: 207fffff