Pith Number

pith:CGSCL7IX

pith:2019:CGSCL7IX4XHC5SO7T3OEE7EKG5

not attested not anchored not stored refs pending

Inverse Chop Addition: Thermal IR background subtraction without Nodding

A.G.M. Pietrow, B. Brandl, L. Burtscher

arxiv:1903.05680 v1 · 2019-03-13 · 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{CGSCL7IX4XHC5SO7T3OEE7EKG5}

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	2026-05-17T23:51:16.579694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11a425fd17e5ce2ec9df9edc427c8a374d13c5bb233d06ea44980955fb64a938

Aliases

arxiv: 1903.05680 · arxiv_version: 1903.05680v1 · doi: 10.48550/arxiv.1903.05680 · pith_short_12: CGSCL7IX4XHC · pith_short_16: CGSCL7IX4XHC5SO7 · pith_short_8: CGSCL7IX

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/CGSCL7IX4XHC5SO7T3OEE7EKG5 \
  | 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: 11a425fd17e5ce2ec9df9edc427c8a374d13c5bb233d06ea44980955fb64a938

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e8bdac681b3a7a5d74e6a6ccf431842885a2dc6e1c4d2b8272a39e554d9c08f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-03-13T18:56:04Z",
    "title_canon_sha256": "947dfaff361d8a5909dd36d51101436fec4bb5a52a570abe520a6e7d6387ee09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05680",
    "kind": "arxiv",
    "version": 1
  }
}