Pith Number

pith:PPHNZ35G

pith:2016:PPHNZ35GP53ND6KUWF55AXUYUR

not attested not anchored not stored refs pending

The Stellar Initial Mass Function in Early-Type Galaxies From Absorption Line Spectroscopy. IV. A Super-Salpeter IMF in the center of NGC 1407 from Non-Parametric Models

Alexa Villaume, Charlie Conroy, Pieter van Dokkum

arxiv:1612.00013 v2 · 2016-11-30 · 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{PPHNZ35GP53ND6KUWF55AXUYUR}

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	2026-05-18T00:48:16.040387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bcedcefa67f76d1f954b17bd05e98a4719b2821db8f7819ee0334ce2d7017b3

Aliases

arxiv: 1612.00013 · arxiv_version: 1612.00013v2 · doi: 10.48550/arxiv.1612.00013 · pith_short_12: PPHNZ35GP53N · pith_short_16: PPHNZ35GP53ND6KU · pith_short_8: PPHNZ35G

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/PPHNZ35GP53ND6KUWF55AXUYUR \
  | 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: 7bcedcefa67f76d1f954b17bd05e98a4719b2821db8f7819ee0334ce2d7017b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8728e315911dab2afdcdfc9f16bcf14ea92beea2f40950a1d66a7e61325bc71b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-11-30T21:00:01Z",
    "title_canon_sha256": "288089936d683d5fbfb0802eeff004e90b61ea85cd8825c049c88a9130b2cedf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.00013",
    "kind": "arxiv",
    "version": 2
  }
}