Pith Number

pith:6EC7UJ2L

pith:2013:6EC7UJ2LYXHZLLX5UTUEXH6YNN

not attested not anchored not stored refs pending

Close pairs of galaxies with different activity levels

A. A. Hakobyan, A. R. Petrosian, B. J. McLean, D. Kunth, T. A. Nazaryan

arxiv:1312.4733 v2 · 2013-12-17 · astro-ph.GA · 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{6EC7UJ2LYXHZLLX5UTUEXH6YNN}

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	2026-05-18T02:44:31.555302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f105fa274bc5cf95aefda4e84b9fd86b5620cf52244b8c9502670f4e92424e65

Aliases

arxiv: 1312.4733 · arxiv_version: 1312.4733v2 · doi: 10.48550/arxiv.1312.4733 · pith_short_12: 6EC7UJ2LYXHZ · pith_short_16: 6EC7UJ2LYXHZLLX5 · pith_short_8: 6EC7UJ2L

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/6EC7UJ2LYXHZLLX5UTUEXH6YNN \
  | 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: f105fa274bc5cf95aefda4e84b9fd86b5620cf52244b8c9502670f4e92424e65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc1abc36e882f9f35ca3869cb1b356a8fdedc28caa972431339871086c626a17",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-12-17T11:53:44Z",
    "title_canon_sha256": "52c6fe3b0e18bcd77170279adcd5cb23741dde157400f59be0e8837d10f21a9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.4733",
    "kind": "arxiv",
    "version": 2
  }
}