Pith Number

pith:CTVHWNRT

pith:2009:CTVHWNRTYR5DGMHWLFV7RQY2RO

not attested not anchored not stored refs pending

Circumstellar Disk Evolution: Constraining Theories of Planet Formation

ETH Zurich), Michael R. Meyer (Institute for Astronomy

arxiv:0906.4507 v1 · 2009-06-24 · astro-ph.EP · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CTVHWNRTYR5DGMHWLFV7RQY2RO}

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	2026-05-18T02:13:12.934954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14ea7b3633c47a3330f6596bf8c31a8ba788d160fbe19e7381c4b598705a789d

Aliases

arxiv: 0906.4507 · arxiv_version: 0906.4507v1 · doi: 10.48550/arxiv.0906.4507 · pith_short_12: CTVHWNRTYR5D · pith_short_16: CTVHWNRTYR5DGMHW · pith_short_8: CTVHWNRT

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/CTVHWNRTYR5DGMHWLFV7RQY2RO \
  | 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: 14ea7b3633c47a3330f6596bf8c31a8ba788d160fbe19e7381c4b598705a789d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42ef14e5e2ba2de09163cc272dc08c6d500c24785c17a66fe64397a0ea012cc5",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-06-24T15:52:20Z",
    "title_canon_sha256": "bd1ef9dd4ce58bd9fecff137ad308018abf8ed71dd32cc1f00f9d511142897b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.4507",
    "kind": "arxiv",
    "version": 1
  }
}