Pith Number

pith:RP6KHY3S

pith:2021:RP6KHY3SI2HYJSAKYUMVKHCLYT

not attested not anchored not stored refs pending

Improving blazar redshift constraints with the edge of the Ly$\alpha$ forest: 1ES 1553+113 and implications for observations of the WHIM

A. Narayanan, H.-W. Chen, J. Charlton, J. Dorigo Jones, J. Schaye, N. A. Wijers, Sameer, S. D. Johnson, Sowgat Muzahid

arxiv:2111.06927 v1 · 2021-11-12 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RP6KHY3SI2HYJSAKYUMVKHCLYT}

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	2026-07-05T03:40:51.457054Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bfca3e372468f84c80ac519551c4bc4d32bae42145bdd907ab72975c7cb33e2

Aliases

arxiv: 2111.06927 · arxiv_version: 2111.06927v1 · doi: 10.48550/arxiv.2111.06927 · pith_short_12: RP6KHY3SI2HY · pith_short_16: RP6KHY3SI2HYJSAK · pith_short_8: RP6KHY3S

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/RP6KHY3SI2HYJSAKYUMVKHCLYT \
  | 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: 8bfca3e372468f84c80ac519551c4bc4d32bae42145bdd907ab72975c7cb33e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "085789cb59a9ca570276ac5d0fd9f4a2d187cf276f1f3d7f5681d4c9e39d01a0",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-11-12T20:29:04Z",
    "title_canon_sha256": "06f9e455465bd5a6b31f2f474c77a5955bf0328e1004e7b2b7fb496b91962730"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.06927",
    "kind": "arxiv",
    "version": 1
  }
}