[Draft BIP] Time-Shifted Proof of Work (TSPOW) — informational consensus-design proposal #2269

pull corepool wants to merge 2 commits into bitcoin:master from corepool:bip-tspow changing 1 files +284 −0

corepool commented at 8:27 PM on August 27, 2026: none

Draft BIP for discussion: Time-Shifted Proof of Work (TSPOW) — informational consensus-design proposal.

This BIP documents a consensus-design pattern (not an activation proposal). TSPOW splits PoW into two stages: warrant issuance (H(header,nonce) < D1, deferred + expiring rewards) and a time-shifted block-producer election (argmin H(h, R, PrevBlockHash) over a dynamic cache pool, with an external-beacon seed R). Two claimed properties: block-time variance divided by 1/k (Gamma sum), and withholding made strictly suboptimal (warrant expiry + deferred rewards). It honestly states that 51%-attack and long-run double-spend (q/p)^z are unchanged natively, that the external beacon adds a trust assumption, and that adoption is a hard fork.

Discussion was started on the bitcoin-dev mailing list (BIP-2 workflow) before this PR: https://groups.google.com/d/msgid/bitcoindev/4bbb1017-8080-4916-8f85-082d2ebf5eacn

Community comments are welcome on the Gamma block-time argument, the withholding-economics model, and the beacon trust model.

Materials (reference impls, simulators, verification scripts, whitepapers CN/EN, formal analysis): https://github.com/corepool/timeshiftpow

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Draft BIP: Time-Shifted Proof of Work (TSPOW) — informational consensus-design proposal 357c7a8348
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in bip-corepool-timeshiftpow.md:34 in ee034ad033

  29 | +to fork the Bitcoin main chain. It specifies the protocol, states its
  30 | +mathematical properties, and — honestly — documents both what the design does
  31 | +and does not achieve: block-time variance is reduced by a factor `1/k`, warrant
  32 | +hiding is economically disincentivized, private mining is eliminated *only* when
  33 | +an honest external beacon is present, and a 51% adversary's power is
  34 | +**not** changed by the scheme natively.

murchandamus commented at 11:24 PM on August 27, 2026:

This repository is for proposals intended for adoption by the Bitcoin network.

murchandamus closed this on Aug 27, 2026

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