Pith Number

pith:AYEY2RIW

pith:2013:AYEY2RIWVHKW7TH55R3S5OU7D5

not attested not anchored not stored refs pending

Polarized synchrotron radiation from the Andromeda Galaxy M31 and background sources at 350 MHz

George Heald, Rainer Beck, Ren\'e Gie{\ss}\"ubel, Tigran Arshakian

arxiv:1309.2539 v4 · 2013-09-10 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AYEY2RIWVHKW7TH55R3S5OU7D5}

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	2026-05-18T01:47:43.707606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06098d4516a9d56fccfdec772eba9f1f520b92daad5110c71537c38957885dc1

Aliases

arxiv: 1309.2539 · arxiv_version: 1309.2539v4 · doi: 10.48550/arxiv.1309.2539 · pith_short_12: AYEY2RIWVHKW · pith_short_16: AYEY2RIWVHKW7TH5 · pith_short_8: AYEY2RIW

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/AYEY2RIWVHKW7TH55R3S5OU7D5 \
  | 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: 06098d4516a9d56fccfdec772eba9f1f520b92daad5110c71537c38957885dc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4cc9319fe166a73d21ab69d3f5d5d80b11f77fe412a5ed3f378554716ccc33d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-09-10T15:00:25Z",
    "title_canon_sha256": "c5d5f7b3e5b77c359081848ec5d8b6582da8f5708c82f4b71d827011aa737394"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2539",
    "kind": "arxiv",
    "version": 4
  }
}