Pith Number

pith:OLCJ7BJY

pith:2015:OLCJ7BJYEDP6UE6OUN54ZX2DZK

not attested not anchored not stored refs pending

The molecular composition of the planet-forming regions of protoplanetary disks across the luminosity regime

3) ((1) Leiden Observatory, (3) Max-Planck-Institut f\"ur Extraterretrische Physik, Catherine Walsh (1), Ewine F. van Dishoeck (1, Germany), Hideko Nomura (2), Japan, Leiden University, Planetary Sciences, The Netherlands (2) Department of Earth, Tokyo Institute of Technology

arxiv:1507.08544 v2 · 2015-07-30 · astro-ph.EP · 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{OLCJ7BJYEDP6UE6OUN54ZX2DZK}

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	2026-05-18T01:09:46.216695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72c49f853820dfea13cea37bccdf43caac0e475b5ddaadd4860fa3706f3aee14

Aliases

arxiv: 1507.08544 · arxiv_version: 1507.08544v2 · doi: 10.48550/arxiv.1507.08544 · pith_short_12: OLCJ7BJYEDP6 · pith_short_16: OLCJ7BJYEDP6UE6O · pith_short_8: OLCJ7BJY

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/OLCJ7BJYEDP6UE6OUN54ZX2DZK \
  | 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: 72c49f853820dfea13cea37bccdf43caac0e475b5ddaadd4860fa3706f3aee14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f46fe81a7f0762f4ca2c83dcb2ede2f5dcb4d89a0624164d24502bdc2248012b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2015-07-30T15:15:16Z",
    "title_canon_sha256": "7ca0c6b722a539f3bb77b714aa8646b01ccfab74a1d5f31a447e0a75dc2d51f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.08544",
    "kind": "arxiv",
    "version": 2
  }
}