Pith Number

pith:67IDR6Z3

pith:2023:67IDR6Z3TZXOXV5B75MBDQGMG4

not attested not anchored not stored refs pending

The Andromeda Galaxy's Last Major Merger: Constraints from the survey of Planetary Nebulae

Alan McConnachie, Chiaki Kobayashi, Francois Hammer, Johanna Hartke, Kenneth C. Freeman, Magda Arnaboldi, Nelson Caldwell, Ortwin Gerhard, Souradeep Bhattacharya, Yanbin Yang

arxiv:2305.02761 v2 · 2023-05-04 · astro-ph.GA · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{67IDR6Z3TZXOXV5B75MBDQGMG4}

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	2026-07-05T07:44:42.304002Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7d038fb3b9e6eebd7a1ff5811c0cc3701a993c901cf4b00255fbfdfdb303d11

Aliases

arxiv: 2305.02761 · arxiv_version: 2305.02761v2 · doi: 10.48550/arxiv.2305.02761 · pith_short_12: 67IDR6Z3TZXO · pith_short_16: 67IDR6Z3TZXOXV5B · pith_short_8: 67IDR6Z3

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/67IDR6Z3TZXOXV5B75MBDQGMG4 \
  | 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: f7d038fb3b9e6eebd7a1ff5811c0cc3701a993c901cf4b00255fbfdfdb303d11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d839ff22552e92c7226fefdf98da992677f51fe5efc056959cb0352990dde98",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-05-04T11:57:37Z",
    "title_canon_sha256": "c164c043f2474c470b294da737e377c20e544efb1e85c935fa6728654c09af25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2305.02761",
    "kind": "arxiv",
    "version": 2
  }
}