Pith Number

pith:2BTDG6R6

pith:2007:2BTDG6R63NNE6ER2UZNLMMJMQN

not attested not anchored not stored refs pending

Reddening, Abundances, and Line Formation in SNe II

David Branch, E. Baron, Peter H. Hauschildt

arxiv:astro-ph/0703068 v1 · 2007-03-04 · 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{2BTDG6R63NNE6ER2UZNLMMJMQN}

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	2026-07-04T17:18:21.310283Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d066337a3edb5a4f123aa65ab6312c83663a669963d4004b79ea121668e6f738

Aliases

arxiv: astro-ph/0703068 · arxiv_version: astro-ph/0703068v1 · doi: 10.48550/arxiv.astro-ph/0703068 · pith_short_12: 2BTDG6R63NNE · pith_short_16: 2BTDG6R63NNE6ER2 · pith_short_8: 2BTDG6R6

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/2BTDG6R63NNE6ER2UZNLMMJMQN \
  | 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: d066337a3edb5a4f123aa65ab6312c83663a669963d4004b79ea121668e6f738

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "403e316c236ff3f4297191ee556c13f9a9c1d42aaf1d8a430fbefb423bbb0670",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-04T21:19:13Z",
    "title_canon_sha256": "0b97ad35c16b33ab36d5acb04c19b6fd7ee18262fbf48033386f1cdc369dc965"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703068",
    "kind": "arxiv",
    "version": 1
  }
}