Pith Number

pith:OITXAQBS

pith:2011:OITXAQBSSLT5MQNQ3CDA6IOPCA

not attested not anchored not stored refs pending

The 21cm "Outer Arm" and the Outer-Galaxy High-Velocity Clouds: Connected by Kinematics, Metallicity, and Distance

Limin Song (UMass), Todd M. Tripp

arxiv:1101.1107 v2 · 2011-01-05 · astro-ph.GA · 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{OITXAQBSSLT5MQNQ3CDA6IOPCA}

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	2026-05-18T02:04:12.544427Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

722770403292e7d641b0d8860f21cf1008821755722c3be0bb2cf3acd05cbc82

Aliases

arxiv: 1101.1107 · arxiv_version: 1101.1107v2 · doi: 10.48550/arxiv.1101.1107 · pith_short_12: OITXAQBSSLT5 · pith_short_16: OITXAQBSSLT5MQNQ · pith_short_8: OITXAQBS

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/OITXAQBSSLT5MQNQ3CDA6IOPCA \
  | 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: 722770403292e7d641b0d8860f21cf1008821755722c3be0bb2cf3acd05cbc82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60f42b3ce54e6232755885409be8007627913489533ab5c1fa5d385611b323ba",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-01-05T22:02:23Z",
    "title_canon_sha256": "9454e19ee4601a55a5561fcc79cacd312ec5fbfd5ef7c6002e9505102b8f3e21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1107",
    "kind": "arxiv",
    "version": 2
  }
}