Pith Number

pith:TYO2I4MX

pith:2002:TYO2I4MXXFR4KXONXXXXBBXSEN

not attested not anchored not stored refs pending

The stellar velocity dispersion of the lens galaxy in MG2016+112 at z=1.004

(2) Astronomy, Caltech, Caltech), L.V.E. Koopmans (1), T. Treu (2) ((1) Theoretical Astrophysics

arxiv:astro-ph/0201017 v2 · 2002-01-02 · 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{TYO2I4MXXFR4KXONXXXXBBXSEN}

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	2026-07-04T16:29:11.761700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e1da47197b963c55dcdbdef7086f223758fd88517ad672fe9fcc917812632ec

Aliases

arxiv: astro-ph/0201017 · arxiv_version: astro-ph/0201017v2 · doi: 10.48550/arxiv.astro-ph/0201017 · pith_short_12: TYO2I4MXXFR4 · pith_short_16: TYO2I4MXXFR4KXON · pith_short_8: TYO2I4MX

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/TYO2I4MXXFR4KXONXXXXBBXSEN \
  | 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: 9e1da47197b963c55dcdbdef7086f223758fd88517ad672fe9fcc917812632ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2077b045d1f3905256959be856bea3c36bb87764e2bc79d1a534a5f6945bf286",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-01-02T19:01:34Z",
    "title_canon_sha256": "8663a6759b529f3893eabc3aa6b38d21ef1027a8cdd50c65c82c45a3ba750e39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0201017",
    "kind": "arxiv",
    "version": 2
  }
}