Pith Number

pith:NB56X6FJ

pith:2018:NB56X6FJSO3SH72DTDQDOWVXNB

not attested not anchored not stored refs pending

Time-dependent fluctuations in the metagalactic photoionization background

Avery Meiksin (IfA, Matthew McQuinn (Astronomy Department, U. Edinburgh), U. Washington)

arxiv:1809.08645 v2 · 2018-09-23 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NB56X6FJSO3SH72DTDQDOWVXNB}

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	2026-05-18T00:01:52.837865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

687bebf8a993b723ff4398e0375ab7686ff145a38cb72379350e6ea8a169dbc2

Aliases

arxiv: 1809.08645 · arxiv_version: 1809.08645v2 · doi: 10.48550/arxiv.1809.08645 · pith_short_12: NB56X6FJSO3S · pith_short_16: NB56X6FJSO3SH72D · pith_short_8: NB56X6FJ

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/NB56X6FJSO3SH72DTDQDOWVXNB \
  | 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: 687bebf8a993b723ff4398e0375ab7686ff145a38cb72379350e6ea8a169dbc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77209d2999a9ea688a0b41e08d39a6da656585d946f9f839c078c90ae322033c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-09-23T17:46:23Z",
    "title_canon_sha256": "d913e0c75277a0932a9b42358bb38bd2af08a06bf7f900b8c6354ed71465bbf9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08645",
    "kind": "arxiv",
    "version": 2
  }
}