Pith Number

pith:2XFRU73P

pith:2018:2XFRU73PAB4SXX4JGOSF7VHUTN

not attested not anchored not stored refs pending

Ultraviolet Detection of the Binary Companion to the Type IIb SN 2001ig

(2) Caltech/IPAC, (3) STScI, (4) U. Amsterdam, (5) Steward Observatory, (6) U. York, (7) U. California Davis, (8) U. California Berkeley), Alexei V. Filippenko (8), Emily Brunsden (6), Emmanouil Zapartas (4), Isaac Shivvers (8), K. Azalee Bostroem (7), Nathan Smith (5), Ori D. Fox (3), Schuyler D. Van Dyk (2), Selma E. de Mink (4), Stuart D. Ryder (1), WeiKang Zheng (8) ((1) AAO

arxiv:1801.05125 v1 · 2018-01-16 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2XFRU73PAB4SXX4JGOSF7VHUTN}

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	2026-05-18T00:18:52.302127Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5cb1a7f6f00792bdf8933a45fd4f49b5d0e16fc67aaf1266f2a66c3b2a77350

Aliases

arxiv: 1801.05125 · arxiv_version: 1801.05125v1 · doi: 10.48550/arxiv.1801.05125 · pith_short_12: 2XFRU73PAB4S · pith_short_16: 2XFRU73PAB4SXX4J · pith_short_8: 2XFRU73P

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/2XFRU73PAB4SXX4JGOSF7VHUTN \
  | 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: d5cb1a7f6f00792bdf8933a45fd4f49b5d0e16fc67aaf1266f2a66c3b2a77350

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "530e9e9a16d616408139472f584694f91cd8ea27e783c5d16d4445539f4ceeba",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-01-16T05:54:15Z",
    "title_canon_sha256": "686f5c93e25331a9d1a03d273b08d9732b16c4279af6e82449f2c0193e28fb00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.05125",
    "kind": "arxiv",
    "version": 1
  }
}