Pith Number

pith:IGO2TJKR

pith:2016:IGO2TJKRMRLYNFEMNRWNHV7J3N

not attested not anchored not stored refs pending

First detection of GeV emission from an ultraluminous infrared galaxy: Arp 220 as seen with the Fermi Large Area Telescope

Fang-Kun Peng, Jun-Feng Wang, Qing-Wen Tang, Ruo-Yu Liu, Xiang-Yu Wang

arxiv:1603.06355 v2 · 2016-03-21 · astro-ph.HE · 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{IGO2TJKRMRLYNFEMNRWNHV7J3N}

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	2026-05-18T01:16:13.358129Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

419da9a551645786948c6c6cd3d7e9db790125cef7442250b15c29ae41b8a69d

Aliases

arxiv: 1603.06355 · arxiv_version: 1603.06355v2 · doi: 10.48550/arxiv.1603.06355 · pith_short_12: IGO2TJKRMRLY · pith_short_16: IGO2TJKRMRLYNFEM · pith_short_8: IGO2TJKR

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/IGO2TJKRMRLYNFEMNRWNHV7J3N \
  | 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: 419da9a551645786948c6c6cd3d7e9db790125cef7442250b15c29ae41b8a69d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67f8abf5b1b1ef56f22c7dc9585554477872be69bdc703a85ad00765c67cb428",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-03-21T09:03:36Z",
    "title_canon_sha256": "dabdeb76f7394c720ef072fd861227122a700abd2f4eb7518c59064855a3e377"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.06355",
    "kind": "arxiv",
    "version": 2
  }
}