Just want to compare hashes, not real blockchain and just a concept.
Original block
"A to B 200 coins, B to C 100 coins, C to D 50 coins, D to A 25 coins"
"D to E 200 coins, E to F 100 coins, F to G 50 coins, G to D 25 coins"
"H to I 200 coins, I to J 100 coins, J to K 50 coins, K to L 25 coins"
"X to Z 200 coins, AA to BB 100 coins, CC to DD 50 coins, DD to AA 25 coins"
"AAA to BBB 200 coins, BBB to CCC 100 coins, CCC to DDD 50 coins, DDD to AAA 25 coins"
"AA to BBB 200 coins, BB to CC 100 coins, CC to DD 50 coins, DD to AA 25 coins"
Fake block
"A to B 200 coins, B to C 100 coins, C to D 50 coins, D to A 25 coins"
"D to E 200 coins, E to F 100 coins, F to G 50 coins, G to D 25 coins"
"H to I 200 coins, I to J 133 coins, J to K 50 coins, K to L 25 coins"
"X to Z 200 coins, AA to BB 100 coins, CC to DD 50 coins, DD to AA 25 coins"
"AAA to BBB 200 coins, BBB to CCC 100 coins, CCC to DDD 50 coins, DDD to AAA 25 coins"
"AA to BBB 200 coins, BB to CC 100 coins, CC to DD 50 coins, DD to AA 25 coins"
Output:
Block-0 valid
Block-1 valid
Block-2 valid
Block-3 valid
Block-4 valid
Block-0 valid
Block-1 valid
Block-2 invalid
Rejected
image source : https://www.researchgate.net/profile/Yahya_Shahsavari/publication/331639364/figure/fig2/AS:755068626276352@1557033797702/Blockchain-data-structure.ppm