Pith Number

pith:QHNTBCTQ

pith:2011:QHNTBCTQYY4JE2MOVXISJMCASW

not attested not anchored not stored refs pending

Fpack and Funpack User's Guide: FITS Image Compression Utilities

Rick White, Rob Seaman, William Pence

arxiv:1112.2671 v1 · 2011-12-12 · 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{QHNTBCTQYY4JE2MOVXISJMCASW}

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	2026-05-18T04:06:33.656841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81db308a70c63892698eadd124b04095ab39c0da44f29fedd36a208ac02e4402

Aliases

arxiv: 1112.2671 · arxiv_version: 1112.2671v1 · doi: 10.48550/arxiv.1112.2671 · pith_short_12: QHNTBCTQYY4J · pith_short_16: QHNTBCTQYY4JE2MO · pith_short_8: QHNTBCTQ

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/QHNTBCTQYY4JE2MOVXISJMCASW \
  | 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: 81db308a70c63892698eadd124b04095ab39c0da44f29fedd36a208ac02e4402

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3170f462a7f746d27fbb84fa717bdc2a9b81930e3135e92f2cb34be490365889",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-12-12T19:58:30Z",
    "title_canon_sha256": "05017b71035d966e81f2f4c6b684e507bdeb0c7161fd59bbfdcdf4fa36fb6c1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.2671",
    "kind": "arxiv",
    "version": 1
  }
}