Pith Number

pith:SVYSHCV6

pith:2008:SVYSHCV6F66GLY2LNRJPCMKIMQ

not attested not anchored not stored refs pending

Carbon isotope fractionation in protoplanetary disks

Karen Willacy, Paul M. Woods

arxiv:0812.0269 v1 · 2008-12-01 · 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{SVYSHCV6F66GLY2LNRJPCMKIMQ}

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	2026-05-18T04:29:24.812023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9571238abe2fbc65e34b6c52f131486417b684b481307adc0a06c08eab0f772d

Aliases

arxiv: 0812.0269 · arxiv_version: 0812.0269v1 · doi: 10.48550/arxiv.0812.0269 · pith_short_12: SVYSHCV6F66G · pith_short_16: SVYSHCV6F66GLY2L · pith_short_8: SVYSHCV6

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/SVYSHCV6F66GLY2LNRJPCMKIMQ \
  | 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: 9571238abe2fbc65e34b6c52f131486417b684b481307adc0a06c08eab0f772d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20ca5810b0beccca41e6763163db67b61fcd7f84f2486c564b9cf58c9862e0a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-01T11:32:49Z",
    "title_canon_sha256": "795ff00800f263f7784a7a32fc291741feaf580b22d63574f3be7fa1dedb3244"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.0269",
    "kind": "arxiv",
    "version": 1
  }
}