Pith Number

pith:WYRQMNJT

pith:2010:WYRQMNJT4CLJOXLLKRGZUCZTI2

not attested not anchored not stored refs pending

A Spectroscopic Study of the H-alpha Surface Brightness Profiles in the Outer Disks of Galaxies

Daniel Christlein, Dennis Zaritsky, Joss Bland-Hawthorn

arxiv:1003.4872 v1 · 2010-03-25 · 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{WYRQMNJT4CLJOXLLKRGZUCZTI2}

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	2026-05-18T02:08:23.114354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b623063533e096975d6b544d9a0b3346ad2d4e921b2b78b12f8fd6c829663565

Aliases

arxiv: 1003.4872 · arxiv_version: 1003.4872v1 · doi: 10.48550/arxiv.1003.4872 · pith_short_12: WYRQMNJT4CLJ · pith_short_16: WYRQMNJT4CLJOXLL · pith_short_8: WYRQMNJT

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/WYRQMNJT4CLJOXLLKRGZUCZTI2 \
  | 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: b623063533e096975d6b544d9a0b3346ad2d4e921b2b78b12f8fd6c829663565

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83bb6b61984f1b4bb327d2a1a31920b9ad5ef175a7ebc5e6b6bef2bc18e7caf9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-25T12:21:22Z",
    "title_canon_sha256": "6d818514a04a57b6f52a9875064b6780780655b367525d862a7c52934481e0ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.4872",
    "kind": "arxiv",
    "version": 1
  }
}