Pith Number

pith:UXOGRQ4A

pith:2011:UXOGRQ4AZ6VNQIKLFIVGI6UPSH

not attested not anchored not stored refs pending

Repeated Matching Pennies with Limited Randomness

Lance Fortnow, Michele Budinich

arxiv:1102.1096 v2 · 2011-02-05 · cs.GT · cs.CC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UXOGRQ4AZ6VNQIKLFIVGI6UPSH}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:25:37.615439Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5dc68c380cfaad8214b2a2a647a8f91f802799601d8dc644291951607874e5d

Aliases

arxiv: 1102.1096 · arxiv_version: 1102.1096v2 · doi: 10.48550/arxiv.1102.1096 · pith_short_12: UXOGRQ4AZ6VN · pith_short_16: UXOGRQ4AZ6VNQIKL · pith_short_8: UXOGRQ4A

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/UXOGRQ4AZ6VNQIKLFIVGI6UPSH \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a5dc68c380cfaad8214b2a2a647a8f91f802799601d8dc644291951607874e5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71fabb8bdb29e382006d81d0f9dcda96b5e8b81776b9109b305932d40ad9c98d",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GT",
    "submitted_at": "2011-02-05T19:46:56Z",
    "title_canon_sha256": "197c998b409934ad746d7ece7a877a20bead8afd063c00a2cf8563c740bdb300"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1096",
    "kind": "arxiv",
    "version": 2
  }
}