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: 1885
Hash: 0d5da966eb908cfabb63f6f77ba1872242bab2fdd41562ae14101883e191691e
Previous block: 213a8aef2d40d3a2aa0abbea508796603bf49b6db38d9f1133fb8d195c402ef2
Next block: 659d3a5b568da59ad5725ef0954ad7708ee37f1f3558332a5293a5e6de78199c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159237
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0e8fc8c0e35309690b17a1f2a0a45e1b668ebc65b006a5dfcce652e4b54eaf8e
Median time: 1719159237
Difficulty: 4.656542373906925e-10
Confirmations: 359
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ebc
Bits: 207fffff