Crowdsourced verification of π's digits — one chunk at a time
Chunks Submitted
Verified
Contributors
Digits Covered
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Python Script (for large chunks)
from mpmath import mp, pi

def get_pi_chunk(start, length):
    # digit 1 = 3, digit 2 = 1, digit 3 = 4 ...
    mp.dps = start + length + 10
    pi_str = mp.nstr(pi, start + length, strip_zeros=False)
    pi_str = pi_str.replace('.', '')
    return pi_str[start-1 : start-1+length]

start = 1
length = 2000000
chunk = get_pi_chunk(start, length)
with open('pi_chunk.txt','w') as f: f.write(chunk)
print('done!') # starts with: 31415926535897...
Convention: Digit 1 = 3
3 · 1 4 1 5 9 2 6 5 ...
↑  ↑ ↑ ↑ ↑ ↑
1  2 3 4 5 6  ← digit numbers
Submit Your Chunk
How Verification Works
Verified — 3+ independent contributors agree
Pending — fewer than 3 independent submissions
Partial — portion cross-checked by overlapping chunks
Disputed — submissions disagree
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Digit Coverage Map
VERIFIED PENDING DISPUTED UNCOVERED
Each cell = 100 digits. Click for details.
Submission Timeline
The Idea
π has been computed to 314 trillion digits — but what if the community could independently verify those digits together?

Anyone can compute a chunk, submit it, and have it verified by consensus. When multiple independent people agree, it's verified. The truth emerges from the crowd.
Why This Matters
π is believed to be a normal number — every digit sequence appears with equal frequency. This has never been formally proven.

A large crowdsourced dataset could help study π's digit distribution statistically. Your chunk might matter.