Pith Number

pith:MZQ4CL7H

pith:2015:MZQ4CL7HC5JR5B26K55XC7WHWV

not attested not anchored not stored refs pending

Quantifying Dark Gas

Carl Heiles, Di Li, Duo Xu, Ningyu Tang, Zhichen Pan

arxiv:1503.02496 v1 · 2015-03-09 · 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{MZQ4CL7HC5JR5B26K55XC7WHWV}

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	2026-05-18T02:25:19.495740Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6661c12fe717531e875e577b717ec7b5786e9a03ffb952da74c991efbe5f8ed7

Aliases

arxiv: 1503.02496 · arxiv_version: 1503.02496v1 · doi: 10.48550/arxiv.1503.02496 · pith_short_12: MZQ4CL7HC5JR · pith_short_16: MZQ4CL7HC5JR5B26 · pith_short_8: MZQ4CL7H

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/MZQ4CL7HC5JR5B26K55XC7WHWV \
  | 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: 6661c12fe717531e875e577b717ec7b5786e9a03ffb952da74c991efbe5f8ed7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbc23694f8370bac82f8fee30a3674f1e31a40448b55e7e2f8e89c01befc5a19",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-03-09T14:47:03Z",
    "title_canon_sha256": "e3bd9e710507cf520b25c6f62c658e9da3b8697369c3dcbc617e33dc77ba60cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02496",
    "kind": "arxiv",
    "version": 1
  }
}