Pith Number

pith:IGSACBXT

pith:2017:IGSACBXTM5Q2KTNZ3W3KLGYSG7

not attested not anchored not stored refs pending

New test of weak equivalence principle using polarized light from astrophysical events

He Gao, Jun-Jie Wei, Mi-Xiang Lan, Peter M\'esz\'aros, Xue-Feng Wu, Zi-Gao Dai

arxiv:1703.09935 v3 · 2017-03-29 · astro-ph.HE · gr-qc · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IGSACBXTM5Q2KTNZ3W3KLGYSG7}

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	2026-05-18T00:45:02.465798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41a40106f36761a54db9ddb6a59b1237fc85fa6de3f07c050a6594380e6675c4

Aliases

arxiv: 1703.09935 · arxiv_version: 1703.09935v3 · doi: 10.48550/arxiv.1703.09935 · pith_short_12: IGSACBXTM5Q2 · pith_short_16: IGSACBXTM5Q2KTNZ · pith_short_8: IGSACBXT

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/IGSACBXTM5Q2KTNZ3W3KLGYSG7 \
  | 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: 41a40106f36761a54db9ddb6a59b1237fc85fa6de3f07c050a6594380e6675c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "742c3a70b857c5e4eae504441af9620673cc06445a1b8433265afb68777c5142",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-03-29T08:53:37Z",
    "title_canon_sha256": "3dc8bf2a9e42d011990af4bd72fa8b63894c3a6e4beff8cae356f0412cbfb98b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.09935",
    "kind": "arxiv",
    "version": 3
  }
}