Pith Number

pith:SYRWFOD5

pith:2020:SYRWFOD5GEZCEUOUZ5VT3PBBBI

not attested not anchored not stored refs pending

Using HCO$^+$ isotopologues as tracers of gas depletion in protoplanetary disk gaps

Dmitry A. Semenov, Grigorii V. Smirnov-Pinchukov, Thomas Henning, Vitaly V. Akimkin

arxiv:2009.09962 v1 · 2020-09-21 · astro-ph.EP · astro-ph.GA · 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{SYRWFOD5GEZCEUOUZ5VT3PBBBI}

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	2026-07-05T01:53:57.634082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

962362b87d31322251d4cf6b3dbc210a24abeeceeef8be06b5950a3d2dca3d76

Aliases

arxiv: 2009.09962 · arxiv_version: 2009.09962v1 · doi: 10.48550/arxiv.2009.09962 · pith_short_12: SYRWFOD5GEZC · pith_short_16: SYRWFOD5GEZCEUOU · pith_short_8: SYRWFOD5

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/SYRWFOD5GEZCEUOUZ5VT3PBBBI \
  | 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: 962362b87d31322251d4cf6b3dbc210a24abeeceeef8be06b5950a3d2dca3d76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8797b1f5c6c5e90fa5cf150ae3d66d3199338a605088be68ead6905037a02bd9",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2020-09-21T15:39:02Z",
    "title_canon_sha256": "38e6c315b14afa238f0ca380b8588595ea2dc6aa199b200b336525b5772adbeb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.09962",
    "kind": "arxiv",
    "version": 1
  }
}