Pith Number

pith:EFBPCTKH

pith:2009:EFBPCTKHGWHTNU55NCQDK56D3V

not attested not anchored not stored refs pending

Metallicity, planet formation, and disc lifetimes

2, 2), Barbara Ercolano (1, Cathie Clarke (1) (1, Institute of Astronomy, UK), University College London, University of Cambridge UK

arxiv:0910.5110 v1 · 2009-10-27 · 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{EFBPCTKHGWHTNU55NCQDK56D3V}

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	2026-05-18T02:11:10.969538Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2142f14d47358f36d3bd68a03577c3dd772a4432495e288b0f29d435492db919

Aliases

arxiv: 0910.5110 · arxiv_version: 0910.5110v1 · doi: 10.48550/arxiv.0910.5110 · pith_short_12: EFBPCTKHGWHT · pith_short_16: EFBPCTKHGWHTNU55 · pith_short_8: EFBPCTKH

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/EFBPCTKHGWHTNU55NCQDK56D3V \
  | 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: 2142f14d47358f36d3bd68a03577c3dd772a4432495e288b0f29d435492db919

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "682beb41846a38a96316b1742018bf182fd82cd6fc50b2668d519df8625bf87e",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-10-27T12:54:16Z",
    "title_canon_sha256": "c3310f18aab6679ef1551b40c69ccdafdd52d91e9e4d8d95f977967860c35094"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5110",
    "kind": "arxiv",
    "version": 1
  }
}