Pith Number

pith:S3TKV6WC

pith:2013:S3TKV6WCYN4PMLAVA47PVONFDO

not attested not anchored not stored refs pending

Studies of NGC 6720 with Calibrated HST WFC3 Emission-Line Filter Images--I: Structure and Evolution

C. R. O'Dell, G. J. Ferland, Manuel Peimbert, W. J. Henney

arxiv:1301.6636 v1 · 2013-01-28 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S3TKV6WCYN4PMLAVA47PVONFDO}

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	2026-05-18T01:51:57.782367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96e6aafac2c378f62c15073efab9a51ba89acd505a030b2f1d09e28827672459

Aliases

arxiv: 1301.6636 · arxiv_version: 1301.6636v1 · doi: 10.48550/arxiv.1301.6636 · pith_short_12: S3TKV6WCYN4P · pith_short_16: S3TKV6WCYN4PMLAV · pith_short_8: S3TKV6WC

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/S3TKV6WCYN4PMLAVA47PVONFDO \
  | 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: 96e6aafac2c378f62c15073efab9a51ba89acd505a030b2f1d09e28827672459

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65f2f91bb51761ffc90714f71e2ef5ba2d441d8d627dcf3f4148479eba47fc55",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-01-28T18:34:02Z",
    "title_canon_sha256": "a528f9cb20640b9703ed8682faed9cab2da6b2356559726808f1c25db371ef5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.6636",
    "kind": "arxiv",
    "version": 1
  }
}