Pith Number

pith:23PR6RV2

pith:2010:23PR6RV2A6GZJBOV434UAMRQIV

not attested not anchored not stored refs pending

Does M31 result from an ancient major merger?

2), Chinese Academy of Sciences (NAOC)), F. Hammer (1), H. Flores (1), J. L. Wang (1, M. Puech (1), Observatoire de Paris (2) National Astronomical Observatories, S. Fouquet (1) ((1) Laboratoire GEPI, Y. B. Yang (2)

arxiv:1010.0679 v2 · 2010-10-04 · 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{23PR6RV2A6GZJBOV434UAMRQIV}

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	2026-05-18T02:05:11.726117Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6df1f46ba078d9485d5e6f9403230454579307c48ab496ed59c4ff8e2d3cdf0

Aliases

arxiv: 1010.0679 · arxiv_version: 1010.0679v2 · doi: 10.48550/arxiv.1010.0679 · pith_short_12: 23PR6RV2A6GZ · pith_short_16: 23PR6RV2A6GZJBOV · pith_short_8: 23PR6RV2

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/23PR6RV2A6GZJBOV434UAMRQIV \
  | 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: d6df1f46ba078d9485d5e6f9403230454579307c48ab496ed59c4ff8e2d3cdf0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d00d523a8298427d12ab9214961f12fb3580722279badda2f19ecfad5f9aaaa2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-10-04T20:00:06Z",
    "title_canon_sha256": "601ec43d312ae27d9bcc8d4946d3398519b1409c125644e3c1bedf0cdbcce87a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.0679",
    "kind": "arxiv",
    "version": 2
  }
}