Pith Number

pith:2I77SI4Q

pith:2021:2I77SI4QRKRSKK5DEVJNLWMXIH

not attested not anchored not stored refs pending

VLBI observations of supernova PTF11qcj: Direct constraints on the size of the radio ejecta

A. Corsi, E. Varenius, H. van Eerten, M. P\'erez-Torres, N. T. Palliyaguru

arxiv:2101.00128 v1 · 2021-01-01 · astro-ph.HE · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2I77SI4QRKRSKK5DEVJNLWMXIH}

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	2026-07-05T02:27:36.082957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d23ff923908aa3252ba32552d5d99741fa13316312ecea926c428f2d718293e1

Aliases

arxiv: 2101.00128 · arxiv_version: 2101.00128v1 · doi: 10.48550/arxiv.2101.00128 · pith_short_12: 2I77SI4QRKRS · pith_short_16: 2I77SI4QRKRSKK5D · pith_short_8: 2I77SI4Q

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/2I77SI4QRKRSKK5DEVJNLWMXIH \
  | 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: d23ff923908aa3252ba32552d5d99741fa13316312ecea926c428f2d718293e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d12acf1edf3bd200f7b46b4a1630b13e082a4e7dbd2dd2db20d01d6654ad0ef",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-01-01T01:13:46Z",
    "title_canon_sha256": "a6bff400b127b1286bdce580f909871de682ef43f4d956c4cd905952267477b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.00128",
    "kind": "arxiv",
    "version": 1
  }
}