Pith Number

pith:BH4FHJOE

pith:2009:BH4FHJOED4A3CQLQE5OT3DFSE4

not attested not anchored not stored refs pending

The Behavior of Novae Light Curves Before Eruption

Andrew C. Collazzi, Arne A. Henden, Ashley Pagnotta, Bradley E. Schaefer, Klaus Lochel, Limin Xiao, Peter Kroll

arxiv:0909.4289 v1 · 2009-09-23 · 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{BH4FHJOED4A3CQLQE5OT3DFSE4}

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	2026-05-18T02:11:38.302906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09f853a5c41f01b14170275d3d8cb22714f939b37767b6b67ab7cac848227262

Aliases

arxiv: 0909.4289 · arxiv_version: 0909.4289v1 · doi: 10.48550/arxiv.0909.4289 · pith_short_12: BH4FHJOED4A3 · pith_short_16: BH4FHJOED4A3CQLQ · pith_short_8: BH4FHJOE

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/BH4FHJOED4A3CQLQE5OT3DFSE4 \
  | 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: 09f853a5c41f01b14170275d3d8cb22714f939b37767b6b67ab7cac848227262

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70d5b3a5f80c084bf3467453ea071028e2b19c387539f5a7bf5a3562dba2f23a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-23T19:50:24Z",
    "title_canon_sha256": "82a7f3a25b5c5ff74b3fd12e4303359110a0c1c9d47fe879c39ef5725e9e33ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4289",
    "kind": "arxiv",
    "version": 1
  }
}