Pith Number

pith:FRYJ5FUI

pith:2017:FRYJ5FUI6L5G37M674CF76AWL4

not attested not anchored not stored refs pending

First Detection of Mid-Infrared Variability from an Ultraluminous X-Ray Source Holmberg II X-1

Dominic J. Walton, Mansi M. Kasliwal, Marianne Heida, Ryan M. Lau

arxiv:1703.03802 v1 · 2017-03-09 · 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{FRYJ5FUI6L5G37M674CF76AWL4}

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	2026-05-18T00:47:00.755543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c709e9688f2fa6dfd9eff045ff8165f0b8c4279d98a5e4376b3ebefe3042a23

Aliases

arxiv: 1703.03802 · arxiv_version: 1703.03802v1 · doi: 10.48550/arxiv.1703.03802 · pith_short_12: FRYJ5FUI6L5G · pith_short_16: FRYJ5FUI6L5G37M6 · pith_short_8: FRYJ5FUI

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/FRYJ5FUI6L5G37M674CF76AWL4 \
  | 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: 2c709e9688f2fa6dfd9eff045ff8165f0b8c4279d98a5e4376b3ebefe3042a23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3261560470b4071445061bd199a7907e045f500989f63b13d4b9a243c4ac0df0",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-03-09T19:00:12Z",
    "title_canon_sha256": "c8f36521725ad76d9426c5ad2767bc44ac69ced6ac9e70c69c506aa46bfd8825"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.03802",
    "kind": "arxiv",
    "version": 1
  }
}