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: 1747
Hash: 2a5c43be6037f69fe2e1ae7312df6fdefdf6def8fd78a7619ab122c4f23c79ce
Previous block: 6e80015ffaa2e6a302ca9edfd7867922712d4393646af3eb6697d459677bcc93
Next block: 1f94694792facd82c1500cb35654716e48974dae64cb8a2ea0f744cbac6d8b08
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159214
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f7f3689d1757a5701cb3758573003e0380b97f57ab1185c77ea31db870c89502
Median time: 1719159214
Difficulty: 4.656542373906925e-10
Confirmations: 497
Chainwork: 0000000000000000000000000000000000000000000000000000000000000da8
Bits: 207fffff