Pith Number

pith:5X4C6K6S

pith:2009:5X4C6K6SPOFH56INXHDOQFO4MV

not attested not anchored not stored refs pending

Lossless Astronomical Image Compression and the Effects of Noise

R. L. White, R. Seaman, W. D. Pence

arxiv:0903.2140 v1 · 2009-03-12 · 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{5X4C6K6SPOFH56INXHDOQFO4MV}

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	2026-05-18T02:14:35.533983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edf82f2bd27b8a7ef90db9c6e815dc6559c55bf126152afddd8e2db73681e5e9

Aliases

arxiv: 0903.2140 · arxiv_version: 0903.2140v1 · doi: 10.48550/arxiv.0903.2140 · pith_short_12: 5X4C6K6SPOFH · pith_short_16: 5X4C6K6SPOFH56IN · pith_short_8: 5X4C6K6S

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/5X4C6K6SPOFH56INXHDOQFO4MV \
  | 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: edf82f2bd27b8a7ef90db9c6e815dc6559c55bf126152afddd8e2db73681e5e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8278bf093b6b5c12c8a0bc0a8c7346895474a2b180cddd774737d2be6a45069c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-03-12T19:40:25Z",
    "title_canon_sha256": "8292fe9dcbea8754d37c64815280bf370deee4c32646d9c92b895b24a96df706"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2140",
    "kind": "arxiv",
    "version": 1
  }
}