Pith Number

pith:SRGI3NWB

pith:2012:SRGI3NWB6E7C4MHDYTLBW4ELPR

not attested not anchored not stored refs pending

On the nature of the galactic early-B hypergiants

B. W. Ritchie, F. Najarro, I. D. Howarth, I. Negueruela, J. S. Clark, M. A. Urbaneja

arxiv:1202.3991 v1 · 2012-02-17 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SRGI3NWB6E7C4MHDYTLBW4ELPR}

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	2026-05-18T01:58:24.006021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

944c8db6c1f13e2e30e3c4d61b708b7c4b33143f7090946a1e6e32dc2120c186

Aliases

arxiv: 1202.3991 · arxiv_version: 1202.3991v1 · doi: 10.48550/arxiv.1202.3991 · pith_short_12: SRGI3NWB6E7C · pith_short_16: SRGI3NWB6E7C4MHD · pith_short_8: SRGI3NWB

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/SRGI3NWB6E7C4MHDYTLBW4ELPR \
  | 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: 944c8db6c1f13e2e30e3c4d61b708b7c4b33143f7090946a1e6e32dc2120c186

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3386e629396364897e9c43cf9d83da0f4c03430e97daab5d01eb657387403a2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-02-17T18:54:51Z",
    "title_canon_sha256": "d854a75dda7531a2f114522913fd986acb67eb4076b08acef10b4edc2ee76e78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3991",
    "kind": "arxiv",
    "version": 1
  }
}