Pith Number

pith:FPIU2MF7

pith:2012:FPIU2MF77YBNXPPJ2RRWFAVTVC

not attested not anchored not stored refs pending

The NGC7771+NGC7770 Minor Merger: Harassing the Little One?

(2) Universidad Autonoma de Madrid, 3), (3) Calar Alto, (4) IAA, (5) Institute of Astronomy, (6) Istituto di Astrofisica e Planetologia Spaziali, Almudena Alonso-Herrero (1), Angeles I. Diaz (2)((1) IFCA, Cambridge, CSIC, CSIC-UC, F. Fabian Rosales Ortega (2, INAF-IAPS, Italy), Miguel Pereira-Santaella (6), Robert C. Kennicutt (5), Sebastian F. Sanchez (4, Spain, UK

arxiv:1206.1686 v1 · 2012-06-08 · 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{FPIU2MF77YBNXPPJ2RRWFAVTVC}

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	2026-05-18T01:57:00.775920Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bd14d30bffe02dbbde9d4636282b3a8864ebab0b3fd3a494f0fce57566dc0c5

Aliases

arxiv: 1206.1686 · arxiv_version: 1206.1686v1 · doi: 10.48550/arxiv.1206.1686 · pith_short_12: FPIU2MF77YBN · pith_short_16: FPIU2MF77YBNXPPJ · pith_short_8: FPIU2MF7

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/FPIU2MF77YBNXPPJ2RRWFAVTVC \
  | 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: 2bd14d30bffe02dbbde9d4636282b3a8864ebab0b3fd3a494f0fce57566dc0c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a506143adbf9cb9e4d8176328724eb3cb987a51902bc0e5ed9e67dc6d03a44a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-06-08T07:42:14Z",
    "title_canon_sha256": "860db18ef5f9b31bb4675a7ae4cf040e1d9f96036c7b26d52ea09b76fd3f658f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.1686",
    "kind": "arxiv",
    "version": 1
  }
}