Pith Number

pith:Q5PNOHGJ

pith:2021:Q5PNOHGJFUP7BZBERURE2KTIOC

not attested not anchored not stored refs pending

H$\alpha$ emission in the outskirts of galaxies at z=0.4

Masao Hayashi, Masayuki Tanaka, Rhythm Shimakawa, Satoshi Kikuta

arxiv:2112.09843 v1 · 2021-12-18 · 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{Q5PNOHGJFUP7BZBERURE2KTIOC}

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	2026-07-05T03:59:00.167909Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

875ed71cc92d1ff0e4248d224d2a6870a27424f07353504ffb4854e66ec4efc8

Aliases

arxiv: 2112.09843 · arxiv_version: 2112.09843v1 · doi: 10.48550/arxiv.2112.09843 · pith_short_12: Q5PNOHGJFUP7 · pith_short_16: Q5PNOHGJFUP7BZBE · pith_short_8: Q5PNOHGJ

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/Q5PNOHGJFUP7BZBERURE2KTIOC \
  | 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: 875ed71cc92d1ff0e4248d224d2a6870a27424f07353504ffb4854e66ec4efc8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6f3964d26604aeacb23dec8543a36d267f0bb5887ba3597bddae4f9aa3701b5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-12-18T04:54:43Z",
    "title_canon_sha256": "2cc854cc0bc1cca71f698176805fd8f59fdecb7a6679109cf6ed5015638371d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.09843",
    "kind": "arxiv",
    "version": 1
  }
}