Pith Number

pith:Z2G2WBDE

pith:2019:Z2G2WBDE77D2Z4LO7JMSGIFTUU

not attested not anchored not stored refs pending

Evidence of ammonium salts in comet 67P as explanation for the nitrogen depletion in cometary comae

B. Fiethe, C. Briois, F. Dhooghe, H. Balsiger, H. Cottin, I. Schroeder, J. De Keyser, J.-J. Berthelier, K. Altwegg, M. Combi, M. Rubin, M. Schuhmann, N. H\"anni, S. A. Fuselier, S. Wampfler, T. I. Gombosi, T. S\'emon

arxiv:1911.13005 v1 · 2019-11-29 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z2G2WBDE77D2Z4LO7JMSGIFTUU}

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	2026-07-05T00:22:51.185004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce8dab0464ffc7acf16efa592320b3a506c3c0f361b629c127781a59b50891dd

Aliases

arxiv: 1911.13005 · arxiv_version: 1911.13005v1 · doi: 10.48550/arxiv.1911.13005 · pith_short_12: Z2G2WBDE77D2 · pith_short_16: Z2G2WBDE77D2Z4LO · pith_short_8: Z2G2WBDE

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/Z2G2WBDE77D2Z4LO7JMSGIFTUU \
  | 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: ce8dab0464ffc7acf16efa592320b3a506c3c0f361b629c127781a59b50891dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e60e3f033f98d0be16008d3d249e086cc9af4e105987804e435f0553de9126e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-11-29T09:07:22Z",
    "title_canon_sha256": "4ff92d5315f621e61231bfab4c46f6f8542e61a3c69734d464acbac157aa9514"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.13005",
    "kind": "arxiv",
    "version": 1
  }
}