Pith Number

pith:6PSJEB3O

pith:2020:6PSJEB3OZ4T5AA53FC2OK34VQ3

not attested not anchored not stored refs pending

Second Order Operators in the NASA Astrophysics Data System

Michael J. Kurtz, Roman Chyla (for the ADS Team)

arxiv:2010.01418 v1 · 2020-10-03 · cs.DL · astro-ph.IM · physics.soc-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{6PSJEB3OZ4T5AA53FC2OK34VQ3}

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	2026-07-05T01:40:05.166292Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3e492076ecf27d003bb28b4e56f9586feb105b64761a3ad56baf3cdae487ac7

Aliases

arxiv: 2010.01418 · arxiv_version: 2010.01418v1 · doi: 10.48550/arxiv.2010.01418 · pith_short_12: 6PSJEB3OZ4T5 · pith_short_16: 6PSJEB3OZ4T5AA53 · pith_short_8: 6PSJEB3O

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/6PSJEB3OZ4T5AA53FC2OK34VQ3 \
  | 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: f3e492076ecf27d003bb28b4e56f9586feb105b64761a3ad56baf3cdae487ac7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70d24b40ca3f1cf89b7e1efd221e219806c80632fdb1eafca1e58779da892f0a",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2020-10-03T19:57:01Z",
    "title_canon_sha256": "3d388803be4c8987c87e1694f636b380213ae1418ce5197a4fd0ec73b0629b12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.01418",
    "kind": "arxiv",
    "version": 1
  }
}