Pith Number

pith:VKRQH4I2

pith:2020:VKRQH4I2XIS7YPLYNMQSMH5KXE

not attested not anchored not stored refs pending

Testing the ALP-photon coupling with polarization measurements of Sagittarius A*

Chengfeng Tang, Guan-Wen Yuan, Jing Shu, Qiang Yuan, Yaqi Zhao, Yifan Chen, Yi-Fu Cai, Ziqing Xia

arxiv:2008.13662 v2 · 2020-08-31 · astro-ph.HE · hep-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{VKRQH4I2XIS7YPLYNMQSMH5KXE}

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.

Cited by

1 paper in Pith

Stellar Superradiance and Low-Energy Absorption in Dense Nuclear Media

Receipt and verification

First computed	2026-07-05T05:43:34.369698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aaa303f11aba25fc3d786b21261faab936e579dbb3cc6fcc360a71875ca600e5

Aliases

arxiv: 2008.13662 · arxiv_version: 2008.13662v2 · doi: 10.48550/arxiv.2008.13662 · pith_short_12: VKRQH4I2XIS7 · pith_short_16: VKRQH4I2XIS7YPLY · pith_short_8: VKRQH4I2

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/VKRQH4I2XIS7YPLYNMQSMH5KXE \
  | 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: aaa303f11aba25fc3d786b21261faab936e579dbb3cc6fcc360a71875ca600e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2def6dce55b1c3f0cde43902546b806e688a0cadd190f6afaab906c3f4575e6",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-08-31T15:02:23Z",
    "title_canon_sha256": "ef60e02d1b707eeb20f2a27298d1c9a7e0798e0a9e69c40e259c60d5f692d1da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.13662",
    "kind": "arxiv",
    "version": 2
  }
}