Pith Number

pith:5PQMGVV5

pith:2012:5PQMGVV5ORHKJG2VR7MRV7FJYD

not attested not anchored not stored refs pending

The origin of circumstellar features in the spectra of hot DA white dwarfs

B. Y. Welsh, J. Farihi, K. Unglaub, M. A. Barstow, M. Burleigh, N. J. Dickinson, S. Redfield

arxiv:1203.5226 v2 · 2012-03-23 · 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{5PQMGVV5ORHKJG2VR7MRV7FJYD}

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	2026-05-18T01:58:04.064975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ebe0c356bd744ea49b558fd91afca9c0c5e4b1a544fd4f02f62fdb4c5f9d4cf6

Aliases

arxiv: 1203.5226 · arxiv_version: 1203.5226v2 · doi: 10.48550/arxiv.1203.5226 · pith_short_12: 5PQMGVV5ORHK · pith_short_16: 5PQMGVV5ORHKJG2V · pith_short_8: 5PQMGVV5

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/5PQMGVV5ORHKJG2VR7MRV7FJYD \
  | 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: ebe0c356bd744ea49b558fd91afca9c0c5e4b1a544fd4f02f62fdb4c5f9d4cf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "250777a3f9565095dfa5afaad0337968a18fbdfa456372a3a8144bced263a6c3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-03-23T12:46:52Z",
    "title_canon_sha256": "2933141130627c54909268fbf0660d60caf6214d370eae89596185b63f8f6c22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5226",
    "kind": "arxiv",
    "version": 2
  }
}