Pith Number

pith:XYRGOIGL

pith:2009:XYRGOIGL7PCOB4YGP2JGQ5TAPR

not attested not anchored not stored refs pending

New Debris Disks Around Young, Low Mass Stars Discovered With The Spitzer Space Telescope

C. H. Chen, I. Song, J. R. Stauffer, K. R. Stapelfeldt, K. Y. L. Su, M. W. Werner, Peter Plavchan

arxiv:0904.0819 v1 · 2009-04-05 · 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{XYRGOIGL7PCOB4YGP2JGQ5TAPR}

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	2026-05-18T04:29:43.770261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be226720cbfbc4e0f3067e926876607c6ac4f7ba8760c7cf3afd6d97e6a3aee8

Aliases

arxiv: 0904.0819 · arxiv_version: 0904.0819v1 · doi: 10.48550/arxiv.0904.0819 · pith_short_12: XYRGOIGL7PCO · pith_short_16: XYRGOIGL7PCOB4YG · pith_short_8: XYRGOIGL

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/XYRGOIGL7PCOB4YGP2JGQ5TAPR \
  | 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: be226720cbfbc4e0f3067e926876607c6ac4f7ba8760c7cf3afd6d97e6a3aee8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc35c6e62aac20a9d45d868404657e0be71e8713a2568792a2b2ea6e845b94a8",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-04-05T21:19:22Z",
    "title_canon_sha256": "b3d1f4b132499fb8b3f000fd52f656dbaa83d5d159f71ee22c7b663a3eaaca33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0819",
    "kind": "arxiv",
    "version": 1
  }
}