Pith Number

pith:KRO5AELS

pith:2017:KRO5AELSMS6KHJVJEEZNW2RIXV

not attested not anchored not stored refs pending

Evidence for azimuthal variations of the oxygen abundance gradient tracing the spiral structure of the galaxy HCG91c

E. P\'erez, F.P.A. Vogt, L. Verdes-Montenegro, M.A. Dopita, S. Borthakur

arxiv:1701.01728 v1 · 2017-01-06 · 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{KRO5AELSMS6KHJVJEEZNW2RIXV}

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	2026-05-18T00:45:14.375394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

545dd0117264bca3a6a92132db6a28bd7125fd1e29841bd84042fc589b54f9ab

Aliases

arxiv: 1701.01728 · arxiv_version: 1701.01728v1 · doi: 10.48550/arxiv.1701.01728 · pith_short_12: KRO5AELSMS6K · pith_short_16: KRO5AELSMS6KHJVJ · pith_short_8: KRO5AELS

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/KRO5AELSMS6KHJVJEEZNW2RIXV \
  | 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: 545dd0117264bca3a6a92132db6a28bd7125fd1e29841bd84042fc589b54f9ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a53aafe562d2559204893bc601cc358d723d94f04c3468d1155bbc2e30746f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-01-06T19:00:00Z",
    "title_canon_sha256": "d44e9653a0ed3363b82a470a11d9d90417e239a72f6f7517d3ad73bdae51f90a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.01728",
    "kind": "arxiv",
    "version": 1
  }
}