Pith Number

pith:Q5FAQOFX

pith:2006:Q5FAQOFXLQPJER7A4UNU5K6YY5

not attested not anchored not stored refs pending

Hydrogen in Type Ic Supernovae?

David Branch, David J. Jeffery, E. Baron, Timothy R. Young

arxiv:astro-ph/0604047 v2 · 2006-04-03 · 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{Q5FAQOFXLQPJER7A4UNU5K6YY5}

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	2026-07-04T16:58:33.247938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

874a0838b75c1e9247e0e51b4eabd8c76e2e2c7b4f3582aa2b8fec621db96df8

Aliases

arxiv: astro-ph/0604047 · arxiv_version: astro-ph/0604047v2 · doi: 10.48550/arxiv.astro-ph/0604047 · pith_short_12: Q5FAQOFXLQPJ · pith_short_16: Q5FAQOFXLQPJER7A · pith_short_8: Q5FAQOFX

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/Q5FAQOFXLQPJER7A4UNU5K6YY5 \
  | 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: 874a0838b75c1e9247e0e51b4eabd8c76e2e2c7b4f3582aa2b8fec621db96df8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec9d8fddfc5d5fbc5a80686a230daa8f7abcb73b5e8f009d023f33ec0f23324b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-04-03T21:28:21Z",
    "title_canon_sha256": "4c12d4245c81203fa57977c68d8d3253e5f5003165339f73f003f14846cad7f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0604047",
    "kind": "arxiv",
    "version": 2
  }
}