Pith Number

pith:DHUVH2BK

pith:2009:DHUVH2BKSKEC6RR63VG2VQV4XN

not attested not anchored not stored refs pending

The Debris Disk Around HR 8799

A. Moro-Martin, G. Bryden, G. H. Rieke, J. P. Williams, K. A. Misselt, K. R. Stapelfeldt, K. Y. L. Su, P. S. Smith, R. Malhotra

arxiv:0909.2687 v1 · 2009-09-14 · 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{DHUVH2BKSKEC6RR63VG2VQV4XN}

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	2026-05-18T02:34:30.052145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19e953e82a92882f463edd4daac2bcbb7b0d3d57c9bbbbb39aad82be1e3e2710

Aliases

arxiv: 0909.2687 · arxiv_version: 0909.2687v1 · doi: 10.48550/arxiv.0909.2687 · pith_short_12: DHUVH2BKSKEC · pith_short_16: DHUVH2BKSKEC6RR6 · pith_short_8: DHUVH2BK

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/DHUVH2BKSKEC6RR63VG2VQV4XN \
  | 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: 19e953e82a92882f463edd4daac2bcbb7b0d3d57c9bbbbb39aad82be1e3e2710

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "707665e3f6afab2ac3a0d1243f4164832d8ead51981eac9b4a95f0efefc37a2e",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-09-14T22:44:36Z",
    "title_canon_sha256": "7271b7e319c0912e76544456caef337184e0540694ca1532c657db6b70c4e246"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2687",
    "kind": "arxiv",
    "version": 1
  }
}