Pith Number

pith:XQFTWZOY

pith:2018:XQFTWZOYKMVHIPRUX65KQZTWF3

not attested not anchored not stored refs pending

The Age of the Old Metal-Poor Globular Cluster NGC6397 Using WFC3/IR Photometry

2), (2) JHU), Jason S. Kalirai (1, Mario Gennaro (1), Matteo Correnti (1), Roger E. Cohen (1), Thomas M. Brown (1) ((1) STScI

arxiv:1807.10142 v1 · 2018-07-24 · astro-ph.SR · 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{XQFTWZOYKMVHIPRUX65KQZTWF3}

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	2026-05-18T00:05:30.242396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc0b3b65d8532a743e34bfbaa866762ee800274a9e6d673eea8d605d6e66504d

Aliases

arxiv: 1807.10142 · arxiv_version: 1807.10142v1 · doi: 10.48550/arxiv.1807.10142 · pith_short_12: XQFTWZOYKMVH · pith_short_16: XQFTWZOYKMVHIPRU · pith_short_8: XQFTWZOY

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/XQFTWZOYKMVHIPRUX65KQZTWF3 \
  | 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: bc0b3b65d8532a743e34bfbaa866762ee800274a9e6d673eea8d605d6e66504d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51d4970c30be4826c5527218f27be05c8baee401967e8b8d00dd8a240acbc9a3",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-24T18:00:35Z",
    "title_canon_sha256": "2a9eaed76dc7172067b01d8826b2cc905716b34da12241f59aae148c32068fd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10142",
    "kind": "arxiv",
    "version": 1
  }
}