Pith Number

pith:4TGMTGEA

pith:2017:4TGMTGEAHHSI57WTS2A3IFJTFJ

not attested not anchored not stored refs pending

Is there a need for dark matter in galaxies?

A. A. Agapov, I. K. Rozgacheva

arxiv:1712.10320 v2 · 2017-12-29 · 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{4TGMTGEAHHSI57WTS2A3IFJTFJ}

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	2026-05-17T23:58:54.577357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4ccc9988039e48efed39681b415332a796ff24bbea453391d9508e678393ef3

Aliases

arxiv: 1712.10320 · arxiv_version: 1712.10320v2 · doi: 10.48550/arxiv.1712.10320 · pith_short_12: 4TGMTGEAHHSI · pith_short_16: 4TGMTGEAHHSI57WT · pith_short_8: 4TGMTGEA

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/4TGMTGEAHHSI57WTS2A3IFJTFJ \
  | 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: e4ccc9988039e48efed39681b415332a796ff24bbea453391d9508e678393ef3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8785ad7db40cb833b5c65a88fbfa257f2e8eeb60cb4faa31ca5e0b08c3403b26",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-29T22:21:26Z",
    "title_canon_sha256": "00ccf30bcce6c582a4b0d6f29daebd95099d6a9855e1dfdf2ceb705a4cc6a245"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.10320",
    "kind": "arxiv",
    "version": 2
  }
}