Pith Number

pith:IZQXZBWM

pith:2009:IZQXZBWMUSPZDVGGXZ4S2CCXLQ

not attested not anchored not stored refs pending

X-ray and strong lensing mass estimate of MS2137.3-2353

2, (2) INAF-OABO, 3), 3) ((1) University of Bologna, (3) INFN-Bologna), Annamaria Donnarumma (1, Lauro Moscardini (1, Massimo Meneghetti (2, Stefano Ettori (2

arxiv:0902.4051 v1 · 2009-02-24 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IZQXZBWMUSPZDVGGXZ4S2CCXLQ}

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	2026-05-18T02:14:46.127034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46617c86cca49f91d4c6be792d08575c1df4b9a989e360f24c008960bab3b2b7

Aliases

arxiv: 0902.4051 · arxiv_version: 0902.4051v1 · doi: 10.48550/arxiv.0902.4051 · pith_short_12: IZQXZBWMUSPZ · pith_short_16: IZQXZBWMUSPZDVGG · pith_short_8: IZQXZBWM

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/IZQXZBWMUSPZDVGGXZ4S2CCXLQ \
  | 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: 46617c86cca49f91d4c6be792d08575c1df4b9a989e360f24c008960bab3b2b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fae07f2902baa32213e2ac4cf5a70599fb0640455b429b2dad430c9e63401af5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-24T01:59:16Z",
    "title_canon_sha256": "ff64f4370ec30c201eb707fa247f47b039cb68411093d126c618debeb42e6e80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4051",
    "kind": "arxiv",
    "version": 1
  }
}