Pith Number

pith:XTCLTJTN

pith:2009:XTCLTJTN2SYHJDYZKFAW6NJXXE

not attested not anchored not stored refs pending

High resolution NaI and CaII absorption observations towards M13, M15 and M33

B. Y. Welsh, J. M. Wheatley, R. Lallement

arxiv:0903.3268 v1 · 2009-03-19 · 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{XTCLTJTN2SYHJDYZKFAW6NJXXE}

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	2026-05-18T02:14:27.356894Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bcc4b9a66dd4b0748f1951416f3537b908421bf50c497d723625963d774d595e

Aliases

arxiv: 0903.3268 · arxiv_version: 0903.3268v1 · doi: 10.48550/arxiv.0903.3268 · pith_short_12: XTCLTJTN2SYH · pith_short_16: XTCLTJTN2SYHJDYZ · pith_short_8: XTCLTJTN

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/XTCLTJTN2SYHJDYZKFAW6NJXXE \
  | 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: bcc4b9a66dd4b0748f1951416f3537b908421bf50c497d723625963d774d595e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2325d397d7afb37ea9f3b5943cda28c5fbf4c73c325397b5610da29dae9b230d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-03-19T03:47:27Z",
    "title_canon_sha256": "5607e7e026531b53cdf1bb6afe9585341e75fd68bc862b509f3a785f4d09caf8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3268",
    "kind": "arxiv",
    "version": 1
  }
}