Pith Number

pith:2WNWJYSA

pith:2016:2WNWJYSADNICIX423W7OPQ5JGV

not attested not anchored not stored refs pending

Spectroscopy Made Easy: Evolution

Jeff A. Valenti, Nikolai Piskunov

arxiv:1606.06073 v2 · 2016-06-20 · astro-ph.IM · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2WNWJYSADNICIX423W7OPQ5JGV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:54:20.269993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d59b64e2401b50245f9addbee7c3a9357ce6ccd3f8e887314e598e581d3f1d41

Aliases

arxiv: 1606.06073 · arxiv_version: 1606.06073v2 · doi: 10.48550/arxiv.1606.06073 · pith_short_12: 2WNWJYSADNIC · pith_short_16: 2WNWJYSADNICIX42 · pith_short_8: 2WNWJYSA

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/2WNWJYSADNICIX423W7OPQ5JGV \
  | 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: d59b64e2401b50245f9addbee7c3a9357ce6ccd3f8e887314e598e581d3f1d41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2798ddbb08120f6ecac0116ed1c0aa3943e2f5a685fcf49327a2e26b8c9d8888",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2016-06-20T12:00:42Z",
    "title_canon_sha256": "23596dd0fc25df1da00dbd50030e2ca7ee78f47d5e2444e1b9d6019497ad6045"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.06073",
    "kind": "arxiv",
    "version": 2
  }
}