Pith Number

pith:WDEEIX3S

pith:2012:WDEEIX3SARSCDFSZDXUEP57YKS

not attested not anchored not stored refs pending

The Neutral Hydrogen Bridge between M31 and M33

Felix J. Lockman, Joseph C. Shields, Nicole L. Free

arxiv:1205.5235 v1 · 2012-05-23 · 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{WDEEIX3SARSCDFSZDXUEP57YKS}

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	2026-05-18T01:57:23.939076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0c8445f7204642196591de847f7f854889233ea8dade504d7e66c7a17f471ba

Aliases

arxiv: 1205.5235 · arxiv_version: 1205.5235v1 · doi: 10.48550/arxiv.1205.5235 · pith_short_12: WDEEIX3SARSC · pith_short_16: WDEEIX3SARSCDFSZ · pith_short_8: WDEEIX3S

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/WDEEIX3SARSCDFSZDXUEP57YKS \
  | 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: b0c8445f7204642196591de847f7f854889233ea8dade504d7e66c7a17f471ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a248dfb500a94145b03ce6843198a65ad7842281fdbf10125076a798ec2eaa1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-05-23T17:43:57Z",
    "title_canon_sha256": "8e33817e6e83eeb7e402b405b213452e647a8ffa38a610237729ca9ea7eba96c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.5235",
    "kind": "arxiv",
    "version": 1
  }
}