Pith Number

pith:R2HU5437

pith:2020:R2HU5437QQ4X6XRFMOJHKEPI55

not attested not anchored not stored refs pending

VVV-WIT-01: highly obscured classical nova or protostellar collision?

A. Kamble, C. Contreras Pe\~na, D. L. Kaplan, D. Minniti, I. Dekany, I. Toledo, J. Borissova, J. Dale, J. Emerson, J. Forbrich, L.C. Smith, M.A. Thompson, M. Catelan, M. Hempel, M. Krause, N. Cross, N. Masetti, P. W. Lucas, R.K. Saito, R. Kurtev, V.D. Ivanov

arxiv:2001.05536 v1 · 2020-01-15 · 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{R2HU5437QQ4X6XRFMOJHKEPI55}

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	2026-07-05T00:36:46.453422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e8f4ef37f84397f5e2563927511e8ef4041e880e69a3ca235ce5d94896c81ad

Aliases

arxiv: 2001.05536 · arxiv_version: 2001.05536v1 · doi: 10.48550/arxiv.2001.05536 · pith_short_12: R2HU5437QQ4X · pith_short_16: R2HU5437QQ4X6XRF · pith_short_8: R2HU5437

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/R2HU5437QQ4X6XRFMOJHKEPI55 \
  | 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: 8e8f4ef37f84397f5e2563927511e8ef4041e880e69a3ca235ce5d94896c81ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ee453d6eb22051f7bad18726dcd8f22da241baa164095555de053d35910f3d6",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-01-15T20:04:53Z",
    "title_canon_sha256": "37f4691baf448427026d8749af48b71fa5a15ac83cc4003675e4adf89ff05b98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.05536",
    "kind": "arxiv",
    "version": 1
  }
}