Pith Number

pith:6R7DXIJI

pith:2011:6R7DXIJITONK3SNJQYE3FRBVWV

not attested not anchored not stored refs pending

The extinction curve in the visible and the value of Rv

Frederic Zagury

arxiv:1109.2199 v3 · 2011-09-10 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6R7DXIJITONK3SNJQYE3FRBVWV}

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	2026-05-18T04:00:52.027241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f47e3ba1289b9aadc9a98609b2c435b560bae1098bac404329884e39d79ac84e

Aliases

arxiv: 1109.2199 · arxiv_version: 1109.2199v3 · doi: 10.48550/arxiv.1109.2199 · pith_short_12: 6R7DXIJITONK · pith_short_16: 6R7DXIJITONK3SNJ · pith_short_8: 6R7DXIJI

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/6R7DXIJITONK3SNJQYE3FRBVWV \
  | 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: f47e3ba1289b9aadc9a98609b2c435b560bae1098bac404329884e39d79ac84e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c25a0faf46ed1ce4fab8c234b032ea4ee676db74b12251c83f85c3c1c542e87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-09-10T06:36:43Z",
    "title_canon_sha256": "ba08c2f74fb3f2384269c649bbf9c86a5b4f798f3bafd06258fe260e6e555086"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2199",
    "kind": "arxiv",
    "version": 3
  }
}