Pith Number

pith:O7AEA7CG

pith:2018:O7AEA7CGJBTHJ5VQ4WUEZS6PPD

not attested not anchored not stored refs pending

Early solar photographs by G. Roster (April 1893)

F. Dom\'inguez-Castro, J.M. Vaquero

arxiv:1804.08703 v1 · 2018-04-05 · physics.hist-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O7AEA7CGJBTHJ5VQ4WUEZS6PPD}

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	2026-05-18T00:17:46.891580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77c0407c46486674f6b0e5a84ccbcf78f50e29d0e7a51c9cc47af7e031f32740

Aliases

arxiv: 1804.08703 · arxiv_version: 1804.08703v1 · doi: 10.48550/arxiv.1804.08703 · pith_short_12: O7AEA7CGJBTH · pith_short_16: O7AEA7CGJBTHJ5VQ · pith_short_8: O7AEA7CG

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/O7AEA7CGJBTHJ5VQ4WUEZS6PPD \
  | 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: 77c0407c46486674f6b0e5a84ccbcf78f50e29d0e7a51c9cc47af7e031f32740

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3c6b9bbef4cfb159409f52e51e6054e69562c1db5a82106add2e6ac882cac95",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2018-04-05T22:05:01Z",
    "title_canon_sha256": "ea73d5dcfe51af88ebe79d7eebc6f2f7786d285f9a08b80f34f2791b1a5af34a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08703",
    "kind": "arxiv",
    "version": 1
  }
}