Pith Number

pith:QOT4J62O

pith:2012:QOT4J62O4Q2CDTSZAZNBHXBYAC

not attested not anchored not stored refs pending

An analysis of metallic high ion absorption line profiles at DA white dwarfs with circumstellar material

Barry Y. Welsh, Martin A. Barstow, Nathan J. Dickinson

arxiv:1209.5302 v1 · 2012-09-24 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QOT4J62O4Q2CDTSZAZNBHXBYAC}

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	2026-05-18T03:44:58.559902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83a7c4fb4ee43421ce59065a13dc3800a7c62963aa9dc64133f892f6116e0101

Aliases

arxiv: 1209.5302 · arxiv_version: 1209.5302v1 · doi: 10.48550/arxiv.1209.5302 · pith_short_12: QOT4J62O4Q2C · pith_short_16: QOT4J62O4Q2CDTSZ · pith_short_8: QOT4J62O

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/QOT4J62O4Q2CDTSZAZNBHXBYAC \
  | 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: 83a7c4fb4ee43421ce59065a13dc3800a7c62963aa9dc64133f892f6116e0101

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8549540211beab47b28f0f203c0180ae86aecb332a40423b005766ee774bf34",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-09-24T15:28:20Z",
    "title_canon_sha256": "4f9ded29a90afe25aacf4537896837a91a50ebe475ec004e48ab0ae358c7020d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5302",
    "kind": "arxiv",
    "version": 1
  }
}