Pith Number

pith:MDB3EDR3

pith:2018:MDB3EDR3OOKKJVXRTEOFHVY6UH

not attested not anchored not stored refs pending

Exercise: Dark Matter as fields that evolve backward in time

Ezequiel Alvarez

arxiv:1803.08531 v1 · 2018-03-22 · gr-qc · hep-ph · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MDB3EDR3OOKKJVXRTEOFHVY6UH}

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	2026-05-18T00:20:21.428189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60c3b20e3b7394a4d6f1991c53d71ea1cbe9dd2f1446e8a54c64eeac5e49e591

Aliases

arxiv: 1803.08531 · arxiv_version: 1803.08531v1 · doi: 10.48550/arxiv.1803.08531 · pith_short_12: MDB3EDR3OOKK · pith_short_16: MDB3EDR3OOKKJVXR · pith_short_8: MDB3EDR3

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/MDB3EDR3OOKKJVXRTEOFHVY6UH \
  | 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: 60c3b20e3b7394a4d6f1991c53d71ea1cbe9dd2f1446e8a54c64eeac5e49e591

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a62de527eb643a2dce2619480cd458b9d2b46397b56ba86d096c1dff3bae8d7",
    "cross_cats_sorted": [
      "hep-ph",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-03-22T18:20:59Z",
    "title_canon_sha256": "2a791ccda97ae227832f28cf39b7702586051855309a814a1334c0865b71b9ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.08531",
    "kind": "arxiv",
    "version": 1
  }
}