Pith Number

pith:VFQ7R5S5

pith:2009:VFQ7R5S5BUUTCNPC7IJV5DBNUD

not attested not anchored not stored refs pending

Optical/UV/X-ray Insights into the RL--RQ Dichotomy

J. Sulentic, P. Marziani, S. Zamfir

arxiv:0910.1806 v1 · 2009-10-09 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VFQ7R5S5BUUTCNPC7IJV5DBNUD}

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	2026-07-04T15:54:19.192603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a961f8f65d0d293135e2fa135e8c2da0dc0200889b01af911bee01dfc77d795b

Aliases

arxiv: 0910.1806 · arxiv_version: 0910.1806v1 · doi: 10.48550/arxiv.0910.1806 · pith_short_12: VFQ7R5S5BUUT · pith_short_16: VFQ7R5S5BUUTCNPC · pith_short_8: VFQ7R5S5

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/VFQ7R5S5BUUTCNPC7IJV5DBNUD \
  | 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: a961f8f65d0d293135e2fa135e8c2da0dc0200889b01af911bee01dfc77d795b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0c0c3744c365fb2d70c77ac1f3d6e35a3cc8c98c0001319ce454f7ab2eaca5f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-09T18:09:35Z",
    "title_canon_sha256": "58b08624cf37fcb514b2121f86781cfae29d70ba7fb45cb865526b28b5cbf7b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1806",
    "kind": "arxiv",
    "version": 1
  }
}