Pith Number

pith:3T7WLLUQ

pith:2010:3T7WLLUQOQA6PZFXM2RWRABRRR

not attested not anchored not stored refs pending

Deep H{\alpha} Observations of NGC 253: a Very Extended and Possibly Declining Rotation Curve?

B. Epinat, C. Carignan, J. Hlavacek-Larrondo, M. Marcelin, M.-M. de Denus-Baillargeon, O. Daigle, O. Hernandez

arxiv:1009.1177 v1 · 2010-09-06 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3T7WLLUQOQA6PZFXM2RWRABRRR}

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	2026-05-18T02:05:35.895474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dcff65ae907401e7e4b766a36880318c6feb2bffe3874420b2ee88f18ed810da

Aliases

arxiv: 1009.1177 · arxiv_version: 1009.1177v1 · doi: 10.48550/arxiv.1009.1177 · pith_short_12: 3T7WLLUQOQA6 · pith_short_16: 3T7WLLUQOQA6PZFX · pith_short_8: 3T7WLLUQ

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/3T7WLLUQOQA6PZFXM2RWRABRRR \
  | 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: dcff65ae907401e7e4b766a36880318c6feb2bffe3874420b2ee88f18ed810da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58573f422d7ad26c9036c28ea11352631c80bf957fcd1af3b0bc38d4a046d44d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-06T23:20:53Z",
    "title_canon_sha256": "dbec76ad887b6b77daf4476f219aef28418f8e3f092bf35165b46d8caf2e4fc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.1177",
    "kind": "arxiv",
    "version": 1
  }
}