Pith Number

pith:FINEL6CD

pith:2000:FINEL6CD42SUMDPIRNMQBLLWWD

not attested not anchored not stored refs pending

Spatial Variability in the Ratio of Interstellar Atomic Deuterium to Hydrogen. II. Observations toward Gamma2 Velorum and Zeta Puppis by the Interstellar Medium Absorption Profile Spectrograph

Alfred Vidal-Madjar, Edward B. Jenkins, George Sonneborn, Prezemyslaw R. Wozniak, Roger Ferlet, Todd M. Tripp, Ulysses J. Sofia

arxiv:astro-ph/0007238 v1 · 2000-07-17 · 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{FINEL6CD42SUMDPIRNMQBLLWWD}

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	2026-05-18T04:35:03.810677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a1a45f843e6a5460de88b5900ad76b0dc2500e2f680fee5ebeddb8986949ebd

Aliases

arxiv: astro-ph/0007238 · arxiv_version: astro-ph/0007238v1 · doi: 10.48550/arxiv.astro-ph/0007238 · pith_short_12: FINEL6CD42SU · pith_short_16: FINEL6CD42SUMDPI · pith_short_8: FINEL6CD

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/FINEL6CD42SUMDPIRNMQBLLWWD \
  | 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: 2a1a45f843e6a5460de88b5900ad76b0dc2500e2f680fee5ebeddb8986949ebd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6548167165513441c01ee57abb8384a6e583619fd1a4f062bc6823a460eeeda",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-07-17T20:46:18Z",
    "title_canon_sha256": "03f5bd7d7303bf025daa408454b3aeb7f008667cb6eb0d8c4b58d553bba9b8f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0007238",
    "kind": "arxiv",
    "version": 1
  }
}