Pith Number

pith:OV4QKVGI

pith:2009:OV4QKVGIDCEX4ADRISBO2ZBMED

not attested not anchored not stored refs pending

The UFFO (Ultra-Fast Flash Observatory) Pathfinder

B. A. Khrenov, B. Grossan, C.-H. Lee, E. V. Linder, G. F. Smoot, H. Lim, I.H. Park, J.H. Park, J. Lee, J.W. Nam, M. Panasyuk, Pisin Chen, Y.-K. Kim, Z. L. Uhm (for the UFFO Collaboration)

arxiv:0912.0773 v2 · 2009-12-04 · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OV4QKVGIDCEX4ADRISBO2ZBMED}

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	2026-07-04T23:53:29.856450Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75790554c818897e00714482ed642c20faf8c28d891e72a555d821ca35aabeb7

Aliases

arxiv: 0912.0773 · arxiv_version: 0912.0773v2 · doi: 10.48550/arxiv.0912.0773 · pith_short_12: OV4QKVGIDCEX · pith_short_16: OV4QKVGIDCEX4ADR · pith_short_8: OV4QKVGI

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/OV4QKVGIDCEX4ADRISBO2ZBMED \
  | 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: 75790554c818897e00714482ed642c20faf8c28d891e72a555d821ca35aabeb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c309641fa77879a25f56457089a9995243b59a077f009ba1125b2bfb5605f79",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-04T07:30:43Z",
    "title_canon_sha256": "619ce6d1ff6f41a0bf68ef91933c72d4dcf7efc0bdda054cb34b80bb422d323a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0773",
    "kind": "arxiv",
    "version": 2
  }
}