Pith Number

pith:ALK6L3Y4

pith:2017:ALK6L3Y444DKX2ZKO3V4KSSBPX

not attested not anchored not stored refs pending

The gas-to-extinction ratio and the gas distribution in the Galaxy

Aigen Li, Hui Zhu, Mengfei Zhang, Wenwu Tian

arxiv:1706.07109 v2 · 2017-06-21 · 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{ALK6L3Y444DKX2ZKO3V4KSSBPX}

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	2026-05-18T00:36:31.129525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02d5e5ef1ce706abeb2a76ebc54a417dec6a2de532b86921c1783f8acaea0c59

Aliases

arxiv: 1706.07109 · arxiv_version: 1706.07109v2 · doi: 10.48550/arxiv.1706.07109 · pith_short_12: ALK6L3Y444DK · pith_short_16: ALK6L3Y444DKX2ZK · pith_short_8: ALK6L3Y4

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/ALK6L3Y444DKX2ZKO3V4KSSBPX \
  | 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: 02d5e5ef1ce706abeb2a76ebc54a417dec6a2de532b86921c1783f8acaea0c59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6b56ebe2e2bec26acc4745be21f13ee24d1d90298dadaa793208bf1a738ae2f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-06-21T20:07:55Z",
    "title_canon_sha256": "dc0bcd6801493bd5c3fa6ef63789f36ba35724dbfdb7c0418b0efebfa8256402"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.07109",
    "kind": "arxiv",
    "version": 2
  }
}