Pith Number

pith:Q4EPA3IK

pith:2009:Q4EPA3IKGCXROQ5CPOI6DO7YIT

not attested not anchored not stored refs pending

Manipulating Scrip Systems: Sybils and Collusion

Eric J. Friedman, Ian A. Kash, Joseph Y. Halpern

arxiv:0903.2278 v1 · 2009-03-12 · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q4EPA3IKGCXROQ5CPOI6DO7YIT}

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	2026-05-18T02:14:28.661873Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8708f06d0a30af1743a27b91e1bbf844c93ce691bc36c28bdca86c3ba4f0109e

Aliases

arxiv: 0903.2278 · arxiv_version: 0903.2278v1 · doi: 10.48550/arxiv.0903.2278 · pith_short_12: Q4EPA3IKGCXR · pith_short_16: Q4EPA3IKGCXROQ5C · pith_short_8: Q4EPA3IK

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/Q4EPA3IKGCXROQ5CPOI6DO7YIT \
  | 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: 8708f06d0a30af1743a27b91e1bbf844c93ce691bc36c28bdca86c3ba4f0109e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20c5087cc7984faf442a4e0a4f4ee677f6ce5c327727d98c3aed2a0608e0c2d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GT",
    "submitted_at": "2009-03-12T21:37:29Z",
    "title_canon_sha256": "5d4dd8ceabdfdb4dcaa99f8079c10d79e681cc1f714c228ba8484f5e5eac295f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2278",
    "kind": "arxiv",
    "version": 1
  }
}