Pith Number

pith:FLCHHZ5Q

pith:2003:FLCHHZ5QDT24FVYXCBNG3HF7MY

not attested not anchored not stored refs pending

SN 2003du: Signatures of the Circumstellar Environment in a Normal Type Ia Supernova?

Austin (2) Dartmouth College (3) Univ. of Tokyo (4) Louisiana State Univ. (5) Lawrence Berkeley Laboratory), B. E. Schaefer (4), C. L. Gerardy (1), G. H. Marion (1), J. C. Wheeler (1) ((1) Univ. of Texas, K. Nomoto (3), L. Wang (5), P. Hoeflich (1), R. A. Fesen (2), R. Quimby (1)

arxiv:astro-ph/0309639 v2 · 2003-09-23 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FLCHHZ5QDT24FVYXCBNG3HF7MY}

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	2026-07-04T16:51:44.648944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ac473e7b01cf5c2d717105a6d9cbf662c47ca6d53d09988b42895fa470f032c

Aliases

arxiv: astro-ph/0309639 · arxiv_version: astro-ph/0309639v2 · doi: 10.48550/arxiv.astro-ph/0309639 · pith_short_12: FLCHHZ5QDT24 · pith_short_16: FLCHHZ5QDT24FVYX · pith_short_8: FLCHHZ5Q

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/FLCHHZ5QDT24FVYXCBNG3HF7MY \
  | 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: 2ac473e7b01cf5c2d717105a6d9cbf662c47ca6d53d09988b42895fa470f032c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10ce7d7fe8e53b65ff16e5c41cba682ee11883d97411b93d3675d31807adb16d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-09-23T19:02:08Z",
    "title_canon_sha256": "1cc940710946abc2b5268add80dd0fa66b4d2af957f1de94a9f62e2c6e7a1479"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0309639",
    "kind": "arxiv",
    "version": 2
  }
}