Pith Number

pith:S7UMZ6HQ

pith:2008:S7UMZ6HQL2H3A6I2JDFGEXEAQF

not attested not anchored not stored refs pending

Evidence for CO depletion in the inner regions of gas-rich protoplanetary disks

2), (2)Sterrenkundig Instituut 'Anton Pannekoek', 3) ((1)European Southern Observatory, (3)Department of Physics, (4)ISDC Data Centre for Astrophysics, 5), (5) Institute for Astrophysics, (6) Max-Planck-Institut f\"ur Astronomie, A. Carmona (4), Astronomy, B. Acke (3), Belgium, C. Dominik (2, D. Fedele (6), Germany, Germany), G. van der Plas (1, Heidelberg, KU Leuven, L.B.F.M. Waters (2, M. E. van den Ancker (1), Radbout University, Switzerland, The Netherlands, University of Amsterdam

arxiv:0810.3417 v2 · 2008-10-19 · 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{S7UMZ6HQL2H3A6I2JDFGEXEAQF}

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	2026-05-18T02:15:23.999137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97e8ccf8f05e8fb0791a48ca625c8081726d19ed15d80dd36453632225fbd216

Aliases

arxiv: 0810.3417 · arxiv_version: 0810.3417v2 · doi: 10.48550/arxiv.0810.3417 · pith_short_12: S7UMZ6HQL2H3 · pith_short_16: S7UMZ6HQL2H3A6I2 · pith_short_8: S7UMZ6HQ

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/S7UMZ6HQL2H3A6I2JDFGEXEAQF \
  | 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: 97e8ccf8f05e8fb0791a48ca625c8081726d19ed15d80dd36453632225fbd216

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e4fd38d62cb76f53256b9077f19aa93322ba30a210ecc7b62cd8b31f244dde7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-19T17:57:46Z",
    "title_canon_sha256": "e7db377789f8db968c73d8c8a13478a86127ab3506c99ab4e163fe9b75f8cd41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.3417",
    "kind": "arxiv",
    "version": 2
  }
}