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: 149
Hash: 5e56cd2e58c3656b2eeecb304c77dd178029f3492e5835015aee53d36e200ad4
Previous block: 55d1c44f60e1051a147a4c647a64f37bb39319362f9f05c812ff09376d150be1
Next block: 1c811f7778c454e09f820cf278758194feab5541d559984f58a02e75513eaac7
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597892
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: ab8cfe5916652c5a1dea54d578b27bf38f604e10564669e087c44e70e27e752c
Median time: 1701597891
Difficulty: 4.656542373906925e-10
Confirmations: 2095
Chainwork: 000000000000000000000000000000000000000000000000000000000000012c
Bits: 207fffff