Pith Number

pith:ZS42T2W3

pith:2024:ZS42T2W3A3B4SQN5DCLEOQCKA2

not attested not anchored not stored refs pending

Dark matter fraction derived from the M31 rotation curve

F. Hammer, G. A. Mamon, H. F. Wang, I. Akib, J. L. Wang, L. Chemin, P. Amram, Y. B. Yang, Y. J. Jiao

arxiv:2412.02737 v5 · 2024-12-03 · astro-ph.GA · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZS42T2W3A3B4SQN5DCLEOQCKA2}

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	2026-07-05T10:11:29.571763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccb9a9eadb06c3c941bd189647404a06985099b68729f4ad71e5771a04330264

Aliases

arxiv: 2412.02737 · arxiv_version: 2412.02737v5 · doi: 10.48550/arxiv.2412.02737 · pith_short_12: ZS42T2W3A3B4 · pith_short_16: ZS42T2W3A3B4SQN5 · pith_short_8: ZS42T2W3

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/ZS42T2W3A3B4SQN5DCLEOQCKA2 \
  | 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: ccb9a9eadb06c3c941bd189647404a06985099b68729f4ad71e5771a04330264

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63b9e0cc8ac1b87787bac9bc921d72f8743a56668634a8a1f6fe96da0b4d505a",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2024-12-03T19:00:00Z",
    "title_canon_sha256": "ead4f932897e95d28d720a7889c5622d31b4ecb959472411ade68111f3ad95a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2412.02737",
    "kind": "arxiv",
    "version": 5
  }
}