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: 558
Hash: 6b4d3b0f29161cf988b3f657a215d7524aa52ecc2a433f8ba7f5b21fc996975c
Previous block: 0d999c907e30f5b402f9a4a0c3ee14c5ae6bc345445c2c4606f819b13542161f
Next block: 69868a3038cde587f5e9d344714cbce34c524a12e217ba01ed556fc79a23c829
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864236
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 86376f6d58f1159944f933b8b304a9fd7b1315a560ee868d93c22d13fab94d55
Median time: 1701864236
Difficulty: 4.656542373906925e-10
Confirmations: 1686
Chainwork: 000000000000000000000000000000000000000000000000000000000000045e
Bits: 207fffff