Pith Number

pith:FF2EMS4O

pith:2012:FF2EMS4OFGCB7IGH6QXSYNKDWX

not attested not anchored not stored refs pending

First Light LBT AO Images of HR 8799 bcde at 1.65 and 3.3 Microns: New Discrepancies between Young Planets and Old Brown Dwarfs

Adam Burrows, Alfio Puglisi, Andrew J. Skemer, Armando Riccardi, Carmelo Arcidiacono, Craig Kulesa, Daniel Apai, Dino Mesa, Don McCarthy, Douglas L. Miller, Elena Masciadri, Enrico Pinna, Fernando Quiros-Pacheco, Filippo Mannucci, Guido Agapito, Guido Brusa, Jared Males, Jarron Leisenring, Javier Argomedo, John C. Wilson, John M. Hill, Joshua Eisner, Juan Carlos Guerra, Katherine B. Follette, Katie Morzinski, Konstantina Boutsia, Laird Close, Lorenzo Busoni, Luca Fini, Marco Xompero, Matthew Nelson, Megan Krejny, Michael R. Meyer, Michael Skrutskie, Paolo Stefanini, Peter Garnavich, Philip M. Hinz, Raffaele Gratton, Riccardo Claudi, Runa Briguglio, Sascha P. Quanz, Silvano Desidera, Simone Esposito, Terry Jones, Timothy J. Rodigas, Vanessa Bailey, Vidhya Vaitheeswaran, William F. Hoffmann

arxiv:1203.2615 v2 · 2012-03-12 · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FF2EMS4OFGCB7IGH6QXSYNKDWX}

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	2026-05-18T01:58:09.761623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2974464b8e29841fa0c7f42f2c3543b5d778cff67ad62c455f39b0bda37f3e3d

Aliases

arxiv: 1203.2615 · arxiv_version: 1203.2615v2 · doi: 10.48550/arxiv.1203.2615 · pith_short_12: FF2EMS4OFGCB · pith_short_16: FF2EMS4OFGCB7IGH · pith_short_8: FF2EMS4O

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/FF2EMS4OFGCB7IGH6QXSYNKDWX \
  | 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: 2974464b8e29841fa0c7f42f2c3543b5d778cff67ad62c455f39b0bda37f3e3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5065ae97ff86922255adb4c941e736b85c2209d7a0da1cea65a59233af64667",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-03-12T20:00:04Z",
    "title_canon_sha256": "da43cf96ceca4d00edf810b9ec680bba50d2a84eae4d118f348a4cf9d25ba3bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2615",
    "kind": "arxiv",
    "version": 2
  }
}