Pith Number

pith:M2EJQC2X

pith:2011:M2EJQC2XB4ZXOFV7P5HCW2JGJ7

not attested not anchored not stored refs pending

Spectral Analysis of Mid-IR Excesses of White Dwarfs

J. Bil\'ikov\`a, K. Su, R.A. Gruendl, T. Rauch, Y.-H. Chu

arxiv:1102.0504 v1 · 2011-02-02 · astro-ph.EP · 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{M2EJQC2XB4ZXOFV7P5HCW2JGJ7}

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	2026-05-18T02:22:41.069615Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6688980b570f337716bf7f4e2b69264ffe3bb549e708ae7231c6174484911213

Aliases

arxiv: 1102.0504 · arxiv_version: 1102.0504v1 · doi: 10.48550/arxiv.1102.0504 · pith_short_12: M2EJQC2XB4ZX · pith_short_16: M2EJQC2XB4ZXOFV7 · pith_short_8: M2EJQC2X

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/M2EJQC2XB4ZXOFV7P5HCW2JGJ7 \
  | 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: 6688980b570f337716bf7f4e2b69264ffe3bb549e708ae7231c6174484911213

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43c580c528820206d0884c93525362abb361f0940ae3f53a7e8ab9e93435a33b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-02-02T17:32:00Z",
    "title_canon_sha256": "a156dd68e63d4fa4b25dff8d70e8d2e66552571849c49982fabafae25d1ffbd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0504",
    "kind": "arxiv",
    "version": 1
  }
}