Pith Number

pith:MKMAWA67

pith:2006:MKMAWA67LTJQLVTYEBIX4BAESQ

not attested not anchored not stored refs pending

The Deuterium to Hydrogen Abundance Ratio Towards the QSO SDSS1558-0031

Gabe E. Prochter, Jason X. Prochaska, John M. O'Meara, Kristin M. Burgess, Rebecca A. Bernstein, Scott Burles

arxiv:astro-ph/0608302 v1 · 2006-08-14 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MKMAWA67LTJQLVTYEBIX4BAESQ}

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	2026-05-18T04:28:58.054444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62980b03df5cd305d67820517e04049404ff0b0bcaaca679a04d1d6973a3cc13

Aliases

arxiv: astro-ph/0608302 · arxiv_version: astro-ph/0608302v1 · doi: 10.48550/arxiv.astro-ph/0608302 · pith_short_12: MKMAWA67LTJQ · pith_short_16: MKMAWA67LTJQLVTY · pith_short_8: MKMAWA67

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/MKMAWA67LTJQLVTYEBIX4BAESQ \
  | 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: 62980b03df5cd305d67820517e04049404ff0b0bcaaca679a04d1d6973a3cc13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9e832c7a16aff8db570ea69732185ce8779b559fa5ce280ce7ed7ae43844105",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-08-14T21:03:17Z",
    "title_canon_sha256": "c967c40fac66a55aaad172ce56a8faf2d6e0899f9d4a5dd583cddc2d4bbc4100"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0608302",
    "kind": "arxiv",
    "version": 1
  }
}