Pith Number

pith:HYIXEBMR

pith:2021:HYIXEBMRIKV3DVEF6NRDOGYZ4W

not attested not anchored not stored refs pending

Precise Photometric Measurements from a 1903 Photographic Plate Using a Commercial Scanner

Alexis Chapman, Amanda Muratore, Buduka Ogonor, Elisabeth Medina, Jason J. Lin, Jorge A. Sanchez, Michael N. Martinez, Richard G. Kron, Rowen Glusman, William Cerny, Yingyi Liang

arxiv:2101.03699 v1 · 2021-01-11 · astro-ph.GA · 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{HYIXEBMRIKV3DVEF6NRDOGYZ4W}

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	2026-07-05T02:27:37.431517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e1172059142abb1d485f362371b19e597974a6c0dcd7ddb897fe482a4e52855

Aliases

arxiv: 2101.03699 · arxiv_version: 2101.03699v1 · doi: 10.48550/arxiv.2101.03699 · pith_short_12: HYIXEBMRIKV3 · pith_short_16: HYIXEBMRIKV3DVEF · pith_short_8: HYIXEBMR

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/HYIXEBMRIKV3DVEF6NRDOGYZ4W \
  | 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: 3e1172059142abb1d485f362371b19e597974a6c0dcd7ddb897fe482a4e52855

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "290e10aae8ba8460bbc0b11de1a2a71182c2057039de4cf384ccc32c3de83652",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-01-11T04:58:20Z",
    "title_canon_sha256": "d12f41009393ec9fcb1419a0659b1cb691a174360eac582597ff6266b00d6549"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.03699",
    "kind": "arxiv",
    "version": 1
  }
}