Pith Number

pith:GRFZVGPN

pith:2020:GRFZVGPNA2FXKBOMR3R4ATSRU3

not attested not anchored not stored refs pending

A Differential Measurement of Circumstellar Extinction for AA Tau's 2011 Dimming Event

C. F. Manara, G. J. Herczeg, K. A. Larson, K. R. Covey

arxiv:2012.02415 v1 · 2020-12-04 · astro-ph.SR · 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{GRFZVGPNA2FXKBOMR3R4ATSRU3}

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	2026-07-05T02:07:52.992581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

344b9a99ed068b7505cc8ee3c04e51a6ce2d66ab49411a2196fa569721778217

Aliases

arxiv: 2012.02415 · arxiv_version: 2012.02415v1 · doi: 10.48550/arxiv.2012.02415 · pith_short_12: GRFZVGPNA2FX · pith_short_16: GRFZVGPNA2FXKBOM · pith_short_8: GRFZVGPN

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/GRFZVGPNA2FXKBOMR3R4ATSRU3 \
  | 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: 344b9a99ed068b7505cc8ee3c04e51a6ce2d66ab49411a2196fa569721778217

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b339366ce74fc53d129217bfeb46ecd76b49ae99de2efcce2ea22bb7771c3577",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-12-04T05:57:48Z",
    "title_canon_sha256": "d7f2451079d3cf6755d9009e412a85b581f7136bd2ecaf7abedfbe7a4eb44eb9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.02415",
    "kind": "arxiv",
    "version": 1
  }
}