Pith Number

pith:YW44U2SO

pith:2011:YW44U2SOIHNWDANZF4J5AVPWWI

not attested not anchored not stored refs pending

The Multimedia Project Quarked!

Alice Bean, Teresa MacDonald

arxiv:1109.2919 v1 · 2011-09-13 · physics.ed-ph · physics.pop-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YW44U2SOIHNWDANZF4J5AVPWWI}

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	2026-05-18T04:13:06.704135Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5b9ca6a4e41db6181b92f13d055f6b215c38f2356d4b4470fe2002880ab32ab

Aliases

arxiv: 1109.2919 · arxiv_version: 1109.2919v1 · doi: 10.48550/arxiv.1109.2919 · pith_short_12: YW44U2SOIHNW · pith_short_16: YW44U2SOIHNWDANZ · pith_short_8: YW44U2SO

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/YW44U2SOIHNWDANZF4J5AVPWWI \
  | 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: c5b9ca6a4e41db6181b92f13d055f6b215c38f2356d4b4470fe2002880ab32ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c48fbe4286fad1447a171385a2067863eccc5663ccfc46fbe49d164181f25218",
    "cross_cats_sorted": [
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2011-09-13T20:47:30Z",
    "title_canon_sha256": "0602e326bd3a6a713269c0bf49f5aaf35bd8fc890e8b776add4302c4d5ad76e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2919",
    "kind": "arxiv",
    "version": 1
  }
}