Pith Number

pith:X7B2QPYH

pith:2015:X7B2QPYHJ3NCFFM74ESJ5XXBW2

not attested not anchored not stored refs pending

Chemistry in Protoplanetary Disks: the gas-phase CO/H2 ratio and the Carbon reservoir

A. Dutrey, F. Hersant, L. Reboussin, S. Guilloteau, V. Wakelam

arxiv:1505.01309 v1 · 2015-05-06 · astro-ph.SR · 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{X7B2QPYHJ3NCFFM74ESJ5XXBW2}

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	2026-05-18T01:36:53.626706Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfc3a83f074eda22959fe1249edee1b6b0c93d49af49bf7db50fe84cb0e32bb7

Aliases

arxiv: 1505.01309 · arxiv_version: 1505.01309v1 · doi: 10.48550/arxiv.1505.01309 · pith_short_12: X7B2QPYHJ3NC · pith_short_16: X7B2QPYHJ3NCFFM7 · pith_short_8: X7B2QPYH

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/X7B2QPYHJ3NCFFM74ESJ5XXBW2 \
  | 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: bfc3a83f074eda22959fe1249edee1b6b0c93d49af49bf7db50fe84cb0e32bb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcecc67fee2d7851c8f1693039bd006d19b113707f011e7dda07cfed2b1f2213",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-05-06T10:27:48Z",
    "title_canon_sha256": "b2498e04143459c48bb1664c03f153e73447a75e9fb08cc845f816668f424585"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01309",
    "kind": "arxiv",
    "version": 1
  }
}