Pith Number

pith:FZMGCJAL

pith:2017:FZMGCJALN24GHIKTFAGWEOJMZU

not attested not anchored not stored refs pending

Apparent quasar disc sizes in the "bird's nest" paradigm

Pavel Abolmasov

arxiv:1701.08957 v2 · 2017-01-31 · astro-ph.HE · 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{FZMGCJALN24GHIKTFAGWEOJMZU}

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	2026-05-18T00:47:03.940870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e5861240b6eb863a153280d62392ccd2f7f5e95bb9c149a03850a1498d7698e

Aliases

arxiv: 1701.08957 · arxiv_version: 1701.08957v2 · doi: 10.48550/arxiv.1701.08957 · pith_short_12: FZMGCJALN24G · pith_short_16: FZMGCJALN24GHIKT · pith_short_8: FZMGCJAL

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/FZMGCJALN24GHIKTFAGWEOJMZU \
  | 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: 2e5861240b6eb863a153280d62392ccd2f7f5e95bb9c149a03850a1498d7698e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0ede066414dc3a45525c6c820a70e871d9f85f1a174c200a1ac856a25ecef58",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-01-31T09:25:23Z",
    "title_canon_sha256": "4ad772ff4e0a2c57d1fa8befbf35de0e2c8bf7881885c0b131a6eeac3a97aaf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.08957",
    "kind": "arxiv",
    "version": 2
  }
}