Pith Number

pith:BUSCFVOG

pith:2019:BUSCFVOG27FRIFNT7TBZDNEJWS

not attested not anchored not stored refs pending

Hidden IR structures in NGC 40: signpost of an ancient born-again event

G. Ramos-Larios, H. Todt, J.A. Toal\'a, M.A. Guerrero

arxiv:1902.11219 v1 · 2019-02-28 · astro-ph.SR · 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{BUSCFVOG27FRIFNT7TBZDNEJWS}

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	2026-05-17T23:51:29.792431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d2422d5c6d7cb1415b3fcc391b489b4b88e5221d711560f55f7bb1af888522c

Aliases

arxiv: 1902.11219 · arxiv_version: 1902.11219v1 · doi: 10.48550/arxiv.1902.11219 · pith_short_12: BUSCFVOG27FR · pith_short_16: BUSCFVOG27FRIFNT · pith_short_8: BUSCFVOG

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/BUSCFVOG27FRIFNT7TBZDNEJWS \
  | 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: 0d2422d5c6d7cb1415b3fcc391b489b4b88e5221d711560f55f7bb1af888522c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8695b18b651af16c48cbb54c62d5b0fcd17170c0b045d9178de81c865d3f2454",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-02-28T17:03:28Z",
    "title_canon_sha256": "89f46e381c02cb5326725420f6187ed76ff3f43a9853126dc9fed1378cf412b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.11219",
    "kind": "arxiv",
    "version": 1
  }
}