I did a list of samples in the song (the short ones made just for dissing some song excluded), something like this

1. Boogie Down Productions - Love's Gonna Get' Cha (produced by Pal Joey)
3. Mobb Deep - Shook Ones (produced by Mobb Deep)
4. Dr. Dre - Keep Their Heads Ringin' (produced by Dr. Dre)
5. Boogie Down Productions - The Bridge is Over (produced by DJ Scott La Rock; the beat is heavily speeded up and without piano)
6. Jay-Z - Dead Presidents II (produced by Ski)
7. Notorious B.I.G. - Who Shot Ya? (produced by Nashiem Myrick)
8. Memphis Bleek feat. Jay-Z - Dear Summer (produced by Just Blaze)
9. Kanye West - Diamonds from Sierra Leone (produced by Kanye West)
10. Jay-Z feat. Notorious B.I.G. - Brooklyn's Finest (produced by Clark Kent)
12. Eazy-E - Real Muthaphuckkin G's (produced by Rhytm D)
13. Jay-Z - Blueprint 2 (produced by Charlemagne)

I think I am wrong at 5th - BDP's Bridge Over - but I really don't know where that sample is from. If someone knows, plz post. I'm giving rep. One love