Pith Number

pith:F3MDTL6Q

pith:2009:F3MDTL6QUUUC4NUBIPXGKCYPYL

not attested not anchored not stored refs pending

VLT diffraction-limited imaging at 11 and 18 micron of the nearest active galactic nuclei

Garching), J. Reunanen (Tuorla Observatory, M. A. Prieto (IAC, R. Siebenmorgen (ESO, Tenerife), University of Turku)

arxiv:0911.2112 v1 · 2009-11-11 · 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{F3MDTL6QUUUC4NUBIPXGKCYPYL}

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	2026-05-18T02:10:48.803820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ed839afd0a5282e368143ee650b0fc2e6b0e081ee3088665dacf55b3914c379

Aliases

arxiv: 0911.2112 · arxiv_version: 0911.2112v1 · doi: 10.48550/arxiv.0911.2112 · pith_short_12: F3MDTL6QUUUC · pith_short_16: F3MDTL6QUUUC4NUB · pith_short_8: F3MDTL6Q

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/F3MDTL6QUUUC4NUBIPXGKCYPYL \
  | 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: 2ed839afd0a5282e368143ee650b0fc2e6b0e081ee3088665dacf55b3914c379

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c00a188ed3db884000f5b59f14768146822fb9789ba3255f28e4febcf53ac4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-11T12:27:03Z",
    "title_canon_sha256": "6852fba15717f01b4b7f1a0fb26a2b24826ae81518d41128bba7534673899318"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2112",
    "kind": "arxiv",
    "version": 1
  }
}