Pith Number

pith:7FANGGUN

pith:2009:7FANGGUND42T2YPICJYLDGTEZ2

not attested not anchored not stored refs pending

The distance to the Andromeda Galaxy from eclipsing binaries

C. Jordi, E. F. Guinan, E. L. Fitzpatrick, F. Vilardell, I. Ribas

arxiv:0911.3391 v1 · 2009-11-17 · astro-ph.CO · 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{7FANGGUND42T2YPICJYLDGTEZ2}

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	2026-05-18T02:10:46.629983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f940d31a8d1f353d61e81270b19a64ce9aef263952b05b8325e7510761d17219

Aliases

arxiv: 0911.3391 · arxiv_version: 0911.3391v1 · doi: 10.48550/arxiv.0911.3391 · pith_short_12: 7FANGGUND42T · pith_short_16: 7FANGGUND42T2YPI · pith_short_8: 7FANGGUN

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/7FANGGUND42T2YPICJYLDGTEZ2 \
  | 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: f940d31a8d1f353d61e81270b19a64ce9aef263952b05b8325e7510761d17219

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb88507e78a77d4c0942bd1cf6323928c3c300179fb51a157bd74731e0e804b1",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-17T21:14:40Z",
    "title_canon_sha256": "a4fa7838be816da2a44443d9a98045c3a4f47277e6539f028606fa95f8039cc1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3391",
    "kind": "arxiv",
    "version": 1
  }
}