Pith Number

pith:XJSL4XIS

pith:2013:XJSL4XISSGYDTSSBPYXLDPYBRB

not attested not anchored not stored refs pending

Evidence for a receding dust sublimation region around a supermassive black hole

(2) UCSB, 3), (3) Univ of Kiel, (4) JPL, (5) NSF, (6) FIZEAU, (7) NAOJ), Florentin Millour (6), Gerd Weigelt (1) ((1) MPIfR, Konrad R. W. Tristram (1), Makoto Kishimoto (1), Rafael Millan-Gabet (4), Richard Barvainis (5), Robert Antonucci (2), Sebastian F. Hoenig (2, Takayuki Kotani (7)

arxiv:1308.6517 v1 · 2013-08-29 · astro-ph.CO · 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{XJSL4XISSGYDTSSBPYXLDPYBRB}

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	2026-05-18T01:47:56.856253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba64be5d1291b039ca417e2eb1bf018875ae262d46b7ee5d68c086f9252af8bb

Aliases

arxiv: 1308.6517 · arxiv_version: 1308.6517v1 · doi: 10.48550/arxiv.1308.6517 · pith_short_12: XJSL4XISSGYD · pith_short_16: XJSL4XISSGYDTSSB · pith_short_8: XJSL4XIS

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/XJSL4XISSGYDTSSBPYXLDPYBRB \
  | 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: ba64be5d1291b039ca417e2eb1bf018875ae262d46b7ee5d68c086f9252af8bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7a0e101a5dbf55e131e2bfae02ff74626cf0f237cd30252a849dfa75beaa666",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-29T16:47:11Z",
    "title_canon_sha256": "a285520369bd8fe0b49904b3cd7281a9ce91a164137dbcc60a87b3d617a0dfd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.6517",
    "kind": "arxiv",
    "version": 1
  }
}