Pith Number

pith:2L7FEJEJ

pith:2015:2L7FEJEJQ4Q2W4QPWPUU7YKOPA

not attested not anchored not stored refs pending

Star formation rates and the kinematics of gas in the spiral arms of NGC 628

Alexander S. Gusev, Firouz Sakhibov, Yury N. Efremov

arxiv:1504.04743 v1 · 2015-04-18 · 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{2L7FEJEJQ4Q2W4QPWPUU7YKOPA}

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	2026-05-18T02:16:40.690188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2fe5224898721ab720fb3e94fe14e780ee9e424f6db94cd1d7618cf0c2f75d6

Aliases

arxiv: 1504.04743 · arxiv_version: 1504.04743v1 · doi: 10.48550/arxiv.1504.04743 · pith_short_12: 2L7FEJEJQ4Q2 · pith_short_16: 2L7FEJEJQ4Q2W4QP · pith_short_8: 2L7FEJEJ

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/2L7FEJEJQ4Q2W4QPWPUU7YKOPA \
  | 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: d2fe5224898721ab720fb3e94fe14e780ee9e424f6db94cd1d7618cf0c2f75d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7b7250b2d3162594d5a84f8f8e7170592f028374cd385bdb88a87d1322aefe6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-18T16:53:54Z",
    "title_canon_sha256": "46f92c4b0568fd9555f27e316a26ab623abdeb8495694df534658e38bd2090e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04743",
    "kind": "arxiv",
    "version": 1
  }
}