Pith Number

pith:5AG6INQD

pith:2009:5AG6INQDZQQLDCQ5RIMUF3LCAW

not attested not anchored not stored refs pending

The accretion disc in the quasar SDSS J0924+0219

D. J. E. Floyd, N. F. Bate, R. L. Webster

arxiv:0905.2651 v1 · 2009-05-16 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5AG6INQDZQQLDCQ5RIMUF3LCAW}

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	2026-07-04T17:20:07.109635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e80de43603cc20b18a1d8a1942ed6205a54992bbd5b2aab491aab6625099529e

Aliases

arxiv: 0905.2651 · arxiv_version: 0905.2651v1 · doi: 10.48550/arxiv.0905.2651 · pith_short_12: 5AG6INQDZQQL · pith_short_16: 5AG6INQDZQQLDCQ5 · pith_short_8: 5AG6INQD

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/5AG6INQDZQQLDCQ5RIMUF3LCAW \
  | 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: e80de43603cc20b18a1d8a1942ed6205a54992bbd5b2aab491aab6625099529e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8caf2f738351e929e8638bff28d9b86c8cc3f529f1517c7f6ddf72cae388627e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-05-16T02:44:13Z",
    "title_canon_sha256": "e22c58d53cf5577bab8efeb75ff8e9a3cf0b2114ea21485540f3d1dbc701a29c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2651",
    "kind": "arxiv",
    "version": 1
  }
}