Pith Number

pith:WOCWMRQL

pith:2012:WOCWMRQLG7H3CGZZHOCZK7SZ3T

not attested not anchored not stored refs pending

The Physical Structure of Protoplanetary Disks: the Serpens Cluster Compared with Other Regions

Bruno Merin, Ewine F. van Dishoeck, Isa Oliveira, Klaus M. Pontoppidan

arxiv:1212.3340 v1 · 2012-12-13 · 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{WOCWMRQLG7H3CGZZHOCZK7SZ3T}

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	2026-05-18T01:52:38.478690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b38566460b37cfb11b393b85957e59dce73b76b38481aa0e6b9fdd26236a1f87

Aliases

arxiv: 1212.3340 · arxiv_version: 1212.3340v1 · doi: 10.48550/arxiv.1212.3340 · pith_short_12: WOCWMRQLG7H3 · pith_short_16: WOCWMRQLG7H3CGZZ · pith_short_8: WOCWMRQL

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/WOCWMRQLG7H3CGZZHOCZK7SZ3T \
  | 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: b38566460b37cfb11b393b85957e59dce73b76b38481aa0e6b9fdd26236a1f87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cd89b0eee58e30c9f777109b7e7d1628e2c94baa474ac139a8533cf03136a2f",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-12-13T21:00:08Z",
    "title_canon_sha256": "d5b1c6b2129a21fd8b3d651f71ddbe4b71950393e493208b19852a44f5562f2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3340",
    "kind": "arxiv",
    "version": 1
  }
}