Pith Number

pith:JG67J2B6

pith:2014:JG67J2B6KINUG4HMIALGLKXJKC

not attested not anchored not stored refs pending

On the H$\alpha$ Behaviour of Blue Supergiants: Rise and Fall over the Bi-stability Jump

Blagovest Petrov, G\"otz Gr\"afener, Jorick S. Vink

arxiv:1403.4097 v2 · 2014-03-17 · 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{JG67J2B6KINUG4HMIALGLKXJKC}

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	2026-05-18T02:51:58.428889Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49bdf4e83e521b4370ec401665aae950b9efb10035b7c2249e5d6cfaa5d35463

Aliases

arxiv: 1403.4097 · arxiv_version: 1403.4097v2 · doi: 10.48550/arxiv.1403.4097 · pith_short_12: JG67J2B6KINU · pith_short_16: JG67J2B6KINUG4HM · pith_short_8: JG67J2B6

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/JG67J2B6KINUG4HMIALGLKXJKC \
  | 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: 49bdf4e83e521b4370ec401665aae950b9efb10035b7c2249e5d6cfaa5d35463

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c0696762e3953b75c507b27740959f82e9bba526b6de3f2ddfd0752bbd67fa4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-03-17T13:58:33Z",
    "title_canon_sha256": "33bd02d93c4f30073d5be9848bdd39b39af768f464516493c784149edcfb4099"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.4097",
    "kind": "arxiv",
    "version": 2
  }
}