Pith Number

pith:74IWYC7R

pith:2009:74IWYC7RRCIY5SFJIN6FX4VUC4

not attested not anchored not stored refs pending

The Deuterium Abundance in the Local Interstellar Medium

Brian D. Fields, Gary Steigman, Tijana Prodanovic

arxiv:0910.4961 v2 · 2009-10-26 · 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{74IWYC7RRCIY5SFJIN6FX4VUC4}

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	2026-05-18T02:11:11.264373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff116c0bf188918ec8a9437c5bf2b4173cbcdbea58d12df219dce50942af9453

Aliases

arxiv: 0910.4961 · arxiv_version: 0910.4961v2 · doi: 10.48550/arxiv.0910.4961 · pith_short_12: 74IWYC7RRCIY · pith_short_16: 74IWYC7RRCIY5SFJ · pith_short_8: 74IWYC7R

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/74IWYC7RRCIY5SFJIN6FX4VUC4 \
  | 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: ff116c0bf188918ec8a9437c5bf2b4173cbcdbea58d12df219dce50942af9453

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03af32d74989312873c1bc2080a46c8a8562f83437f8c486e38bfe6755362640",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-10-26T20:00:10Z",
    "title_canon_sha256": "e421699f7e80716fc6da7c9930fd183158c597f2bbc93b240646a6ce9d20aecb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4961",
    "kind": "arxiv",
    "version": 2
  }
}