Pith Number

pith:357HMESX

pith:2012:357HMESXR7CFCSBW5WY5AU43NX

not attested not anchored not stored refs pending

Lensing and Dynamics in Two Simple Steps

A. Agnello (Cambridge), M. W. Auger (Cambridge), N. W. Evans (Cambridge)

arxiv:1209.2554 v1 · 2012-09-12 · 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{357HMESXR7CFCSBW5WY5AU43NX}

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	2026-05-18T01:54:30.051347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df7e7612578fc4514836edb1d0539b6de2ee6b13e278b15446f5051924015226

Aliases

arxiv: 1209.2554 · arxiv_version: 1209.2554v1 · doi: 10.48550/arxiv.1209.2554 · pith_short_12: 357HMESXR7CF · pith_short_16: 357HMESXR7CFCSBW · pith_short_8: 357HMESX

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/357HMESXR7CFCSBW5WY5AU43NX \
  | 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: df7e7612578fc4514836edb1d0539b6de2ee6b13e278b15446f5051924015226

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77416f482511778d69252b770e8e407816d86c1f14fe87edaf4d55f9a9cbb7c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-12T10:49:53Z",
    "title_canon_sha256": "ae88d3e6af5e576a9df9478ed27ee8605b675bde1d4f9e3343bd91d6a7a2c8fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2554",
    "kind": "arxiv",
    "version": 1
  }
}