Pith Number

pith:XP5OLPJ2

pith:2016:XP5OLPJ2UTQCQVOQOOB3G32EHD

not attested not anchored not stored refs pending

HI in the Outskirts of Nearby Galaxies

A. Bosma

arxiv:1612.05272 v1 · 2016-12-15 · 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{XP5OLPJ2UTQCQVOQOOB3G32EHD}

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	2026-05-18T00:39:00.692186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbfae5bd3aa4e02855d07383b36f4438dbee621722e772f8258a7c3209f8baf0

Aliases

arxiv: 1612.05272 · arxiv_version: 1612.05272v1 · doi: 10.48550/arxiv.1612.05272 · pith_short_12: XP5OLPJ2UTQC · pith_short_16: XP5OLPJ2UTQCQVOQ · pith_short_8: XP5OLPJ2

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/XP5OLPJ2UTQCQVOQOOB3G32EHD \
  | 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: bbfae5bd3aa4e02855d07383b36f4438dbee621722e772f8258a7c3209f8baf0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab2e1a4d60dbf14b792fef90abf8d7b4eaa7bca46b17da274b198423576bba0d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-12-15T21:10:34Z",
    "title_canon_sha256": "427e0be5dd0d23997b5ea38f993a555deb1ad42f7ff5e2ed21f8905ad202087c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.05272",
    "kind": "arxiv",
    "version": 1
  }
}