Pith Number

pith:EAQ7Q66O

pith:2002:EAQ7Q66ORXMR4PB6KOWX67SWWM

not attested not anchored not stored refs pending

A 60 pc counter-rotating core in NGC 4621

Eric Emsellem, Fabien Wernli, Yannick Copin

arxiv:astro-ph/0209361 v1 · 2002-09-18 · astro-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{EAQ7Q66ORXMR4PB6KOWX67SWWM}

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	2026-07-04T16:30:48.291147Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2021f87bce8dd91e3c3e53ad7f7e56b31e3dc0b5f76edd2ef1583a7f38c65501

Aliases

arxiv: astro-ph/0209361 · arxiv_version: astro-ph/0209361v1 · doi: 10.48550/arxiv.astro-ph/0209361 · pith_short_12: EAQ7Q66ORXMR · pith_short_16: EAQ7Q66ORXMR4PB6 · pith_short_8: EAQ7Q66O

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/EAQ7Q66ORXMR4PB6KOWX67SWWM \
  | 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: 2021f87bce8dd91e3c3e53ad7f7e56b31e3dc0b5f76edd2ef1583a7f38c65501

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b2a46d723982f5d56133cb6b259e13154f200f358afd4367a608c488d835ed0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-09-18T12:59:08Z",
    "title_canon_sha256": "d6bae972c78391f2b929432074d3ad4cf376c958a99898152c99a75a3c8fe805"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0209361",
    "kind": "arxiv",
    "version": 1
  }
}