Pith Number

pith:4G4M53ZU

pith:2017:4G4M53ZUMZ7SVTLUGX3GSNHNRN

not attested not anchored not stored refs pending

Revisiting Stephan's Quintet with deep optical images

Florent Renaud, Jean-Charles Cuillandre, Pierre-Alain Duc

arxiv:1712.07145 v1 · 2017-12-19 · 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{4G4M53ZUMZ7SVTLUGX3GSNHNRN}

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	2026-05-18T00:25:15.608394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1b8ceef34667f2acd7435f66934ed8b5e47989d5c2f1fe241b47ff429b0b28a

Aliases

arxiv: 1712.07145 · arxiv_version: 1712.07145v1 · doi: 10.48550/arxiv.1712.07145 · pith_short_12: 4G4M53ZUMZ7S · pith_short_16: 4G4M53ZUMZ7SVTLU · pith_short_8: 4G4M53ZU

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/4G4M53ZUMZ7SVTLUGX3GSNHNRN \
  | 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: e1b8ceef34667f2acd7435f66934ed8b5e47989d5c2f1fe241b47ff429b0b28a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "adf0194184094463cd8b4ca1d018174e69c95ed67cd10ee4186561b66d712bb4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-19T19:05:01Z",
    "title_canon_sha256": "7ab4561a394085fd6656966b0038331f94d55911c4f13519a5467386b7931986"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.07145",
    "kind": "arxiv",
    "version": 1
  }
}