Pith Number

pith:7ACZDUGC

pith:2026:7ACZDUGCS2L4TKMROC6WD5NDQQ

not attested not anchored not stored refs pending

phoptic -- a Python package for reducing astronomical images

Adam B. Hill, Angel Castro, Diego Altamirano, Federico Vincentelli, Juan V. Hernandez Santisteban, Noel Castro Segura, Raul Michel, Romina P. Petrucci, Zackery A. Irving

arxiv:2607.14014 v1 · 2026-07-15 · 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{7ACZDUGCS2L4TKMROC6WD5NDQQ}

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	2026-07-16T01:23:19.660725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f80591d0c29697c9a99170bd61f5a384391898b6d2819551ecf96b348cc5574e

Aliases

arxiv: 2607.14014 · arxiv_version: 2607.14014v1 · doi: 10.48550/arxiv.2607.14014 · pith_short_12: 7ACZDUGCS2L4 · pith_short_16: 7ACZDUGCS2L4TKMR · pith_short_8: 7ACZDUGC

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/7ACZDUGCS2L4TKMROC6WD5NDQQ \
  | 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: f80591d0c29697c9a99170bd61f5a384391898b6d2819551ecf96b348cc5574e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "032e35d48e8c467f788359aaf38b6bf5d68dd418b4376bec8c0b8cd371e3fcfe",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-07-15T16:45:33Z",
    "title_canon_sha256": "9834a88e6345fd61f39c8f2eb7c210bcf77f5f3d308b2e04c1367970d484ac9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.14014",
    "kind": "arxiv",
    "version": 1
  }
}