Pith Number

pith:GA7MS4SX

pith:2021:GA7MS4SX7PNC6DUG2EL2T5UZQM

not attested not anchored not stored refs pending

The snapshot distance method: estimating the distance to a Type Ia supernova from minimal observations

Alexei V. Filippenko, Benjamin E. Stahl, Thomas de Jaeger, Weikang Zheng

arxiv:2105.04446 v1 · 2021-05-10 · astro-ph.CO · astro-ph.HE · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GA7MS4SX7PNC6DUG2EL2T5UZQM}

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	2026-07-05T02:42:51.843649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

303ec97257fbda2f0e86d117a9f699831d5be37c8d654db7cfb9374e4e0fad4a

Aliases

arxiv: 2105.04446 · arxiv_version: 2105.04446v1 · doi: 10.48550/arxiv.2105.04446 · pith_short_12: GA7MS4SX7PNC · pith_short_16: GA7MS4SX7PNC6DUG · pith_short_8: GA7MS4SX

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/GA7MS4SX7PNC6DUG2EL2T5UZQM \
  | 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: 303ec97257fbda2f0e86d117a9f699831d5be37c8d654db7cfb9374e4e0fad4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07f0a81e492e9cc8ee26a5adc287f3c0a7083f8cfbaa2963be4d7f5041679d28",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-05-10T15:11:48Z",
    "title_canon_sha256": "33c28af437862fc79c2f5390bf21791be012f7174c5ee1c41e99f36e01876880"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.04446",
    "kind": "arxiv",
    "version": 1
  }
}