Pith Number

pith:ECCQ7H62

pith:2013:ECCQ7H625ADY5WGLKBYT7AMDAT

not attested not anchored not stored refs pending

Optical linear polarization measurements of WR massive binary and single stars

David Hiriart, Jose Manuel Lopez, Julio Ramirez-Velez, Stavros Akras

arxiv:1309.0882 v1 · 2013-09-04 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ECCQ7H625ADY5WGLKBYT7AMDAT}

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	2026-05-18T03:14:16.623483Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20850f9fdae8078ed8cb50713f818304d6f753939f33043af1a4426f261bc290

Aliases

arxiv: 1309.0882 · arxiv_version: 1309.0882v1 · doi: 10.48550/arxiv.1309.0882 · pith_short_12: ECCQ7H625ADY · pith_short_16: ECCQ7H625ADY5WGL · pith_short_8: ECCQ7H62

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/ECCQ7H625ADY5WGLKBYT7AMDAT \
  | 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: 20850f9fdae8078ed8cb50713f818304d6f753939f33043af1a4426f261bc290

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07983013302c9d9ad52143ca0590c8537612ca6aa6ca1a411704e3909f12fe3a",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-09-04T01:16:30Z",
    "title_canon_sha256": "c1884a22a0085e58bc8eafb2b14debb2cc6b10b48e94948dc1897bc347c028d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.0882",
    "kind": "arxiv",
    "version": 1
  }
}