Pith Number

pith:TKUZGICO

pith:2009:TKUZGICO6JPUONLIFJ6FLBNPXM

not attested not anchored not stored refs pending

Interstellar Metastable Helium Absorption as a Probe of the Cosmic-Ray Ionization Rate

Benjamin J. McCall, K. H. Hinkle, L. M. Hobbs, Nick Indriolo

arxiv:0908.2816 v1 · 2009-08-19 · 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{TKUZGICO6JPUONLIFJ6FLBNPXM}

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	2026-05-18T02:12:24.969832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9aa993204ef25f4735682a7c5585afbb2c532d7fd9e602541c954f1a57d3ac2d

Aliases

arxiv: 0908.2816 · arxiv_version: 0908.2816v1 · doi: 10.48550/arxiv.0908.2816 · pith_short_12: TKUZGICO6JPU · pith_short_16: TKUZGICO6JPUONLI · pith_short_8: TKUZGICO

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/TKUZGICO6JPUONLIFJ6FLBNPXM \
  | 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: 9aa993204ef25f4735682a7c5585afbb2c532d7fd9e602541c954f1a57d3ac2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7599bc30a59adceed1594291392678da710b8d91cbfce163ac2363cc3c3aa4d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-08-19T20:28:19Z",
    "title_canon_sha256": "4f603e90b12e6c7974a4d1d0a57fb878aa13b955928ea8c1b0794963553376dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2816",
    "kind": "arxiv",
    "version": 1
  }
}