Pith Number

pith:NULYJRCP

pith:2013:NULYJRCPSLNOREFUI3YULC35ZY

not attested not anchored not stored refs pending

Sparser Random 3SAT Refutation Algorithms and the Interpolation Problem

Iddo Tzameret

arxiv:1305.0948 v3 · 2013-05-04 · 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{NULYJRCPSLNOREFUI3YULC35ZY}

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	2026-05-18T02:51:42.373087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d1784c44f92dae890b446f1458b7dce20ca12a3660b3f5d0a43ad886ee22838

Aliases

arxiv: 1305.0948 · arxiv_version: 1305.0948v3 · doi: 10.48550/arxiv.1305.0948 · pith_short_12: NULYJRCPSLNO · pith_short_16: NULYJRCPSLNOREFU · pith_short_8: NULYJRCP

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/NULYJRCPSLNOREFUI3YULC35ZY \
  | 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: 6d1784c44f92dae890b446f1458b7dce20ca12a3660b3f5d0a43ad886ee22838

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5064e2e2f026beb47fa198f9f5d565b87a68cbeb191384547da6fe0ecce3230d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-05-04T19:22:46Z",
    "title_canon_sha256": "d10aaaf9951e09f933c3bceb1e59f7b918ab94463ea521d9c862cf8bb5f757ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0948",
    "kind": "arxiv",
    "version": 3
  }
}