The eighth Bitcoin Cash Development video meeting for 2019 took place on April 18th at 15:00 UTC. Participants: Jason B. Cox, - Bitcoin ABC Antony Zegers - Bitcoin ABC Mark Lundeberg, - Independent BCH Developer Chris Pacia - BCHD Andrea Suisani - Bitcoin Unlimited Fernando Pelliccioni - Bitprim Host: David R. Allen Goal of the meeting: To share information that may help with planning for the upcoming upgrade and discussion on the November upgrade. 1.Status of various node implementations regarding upgrade readiness. a. BitcoinABC b. BCHD c. Bitcoin Unlimited d. BitPrim e. BCash 2. Specification Update 3. "Upgrade Testnet" update 4. 25 Unconfirmed Transaction limit BCash Developers Video - https://youtu.be/buov1W_elvs Bitcoin Cash Testnet http://testnet.imaginary.cash/ Testnet Work Group - Telegram https://t.me/joinchat/DUeWWkYZbVMjvwM... Telegram [WG] Schnorr Sigs https://t.me/joinchat/Jw9WhUbcT1vEc6V... https://github.com/bitcoincashorg/bit... Reusable Address Telegram Group (BitPay): https://t.me/joinchat/HmRw3RMmuu_V6Nv... Ideas welcome: https://www.thefutureofbitcoin.cash

The 12th Bitcoin Cash Development video meeting for 2019 took place on July 11 at 15:00 UTC. Participants: Amaury Sechet, - Bitcoin ABC Jason B. Cox, - Bitcoin ABC Antony Zegers - Bitcoin ABC Mark Lundeberg, - Independent BCH Developer Andrea Suisani - Bitcoin Unlimited Emil Oldenburg - Bitcoin.com Host: David R. Allen Goal of the meeting: Planning for the November 2019 Upgrade 1. Discussion next upgrade timeline and items: a. Feature freeze for Bitcoin ABC is Aug. 15th b. Update on Schnorr for CHECKMULTISIG (Mark) c. Minimal Data (Mark) d. Draft specifications are up for review at bitcoincash.org Github 2. Other items / general discussion spec PR https://github.com/bitcoincashorg/bit... https://github.com/bitcoincashorg/bit... https://github.com/bitcoincashorg/bit... Telegram [WG] Schnorr Sigs https://t.me/joinchat/Jw9WhUbcT1vEc6V... https://github.com/bitcoincashorg/bit... Reusable Address Telegram Group (BitPay): https://t.me/joinchat/HmRw3RMmuu_V6Nv... Ideas welcome: https://www.thefutureofbitcoin.cash

The 13th Bitcoin Cash Development video meeting for 2019 took place on July 11 at 15:00 UTC. Participants: Amaury Sechet, - Bitcoin ABC Antony Zegers - Bitcoin ABC Mark Lundeberg, - Independent BCH Developer Andrea Suisani - Bitcoin Unlimited Fernando Pelliccioni - BitPrim Matias Garcia - BitPay Jason Dreyzehner - @BitAuth Host: David R. Allen Goal of the meeting: Planning for the November 2019 Upgrade 1. Discussion next upgrade timeline and items: Bitcoin ABC 0.20.0 has been released Upgrade testnet update. (Antony / Mark) 2. Other items / general discussion spec PR https://github.com/bitcoincashorg/bit... https://github.com/bitcoincashorg/bit... https://github.com/bitcoincashorg/bit... Telegram [WG] Schnorr Sigs https://t.me/joinchat/Jw9WhUbcT1vEc6V... https://github.com/bitcoincashorg/bit... https://github.com/bitauth/bitauth201... Reusable Address Telegram Group (BitPay): https://t.me/joinchat/HmRw3RMmuu_V6Nv... Ideas welcome: https://www.thefutureofbitcoin.cash

The 16th Bitcoin Cash Development video meeting for 2019 took place on November 7 at 15:00 UTC. Participants: Amaury Séchet - Bitcoin ABC Antony Zegers - Bitcoin ABC Jason B. Cox - Bitcoin ABC Mark Lundeberg - Independent BCH Developer Chris Pacia - BCHD Tyler Smith - BCHD Jason Dreyzehner - BitAuth Josh Green - Bitcoin Verde Matias Garcia - BitPay Host: David R. Allen Agenda: 1. Avalanche discussion / progress updates. 2. Discussion of Upgrade preparedness. 3. Creating a BCH specification / BUIP121 4. Potential items for the next upgrade: a. Allowing more than one OP_RETURN output per transaction b. New Difficulty Adjustment Algorithm c. Make P2PKH256 outputs standard d. 520 byte script limit (affecting P2SH script length in particular) References and links discussed during the meeting: November 15th Upgrade Specification: https://github.com/bitcoincashorg/bit... Bitcoin Verde Telegram: https://t.me/bitcoinverde From Jason Dreyzehner : I've written descriptions of each opcode and potential error in the script system for the Bitauth Templating Language compiler (used on https://ide.bitauth.com) Opcode descriptions for opcodes which are common between BCH and BTC: https://github.com/bitauth/bitcoin-ts... Common error messages: https://github.com/bitauth/bitcoin-ts... BCH only descriptions: https://github.com/bitauth/bitcoin-ts... BCH only error messages: https://github.com/bitauth/bitcoin-ts... Also, I strongly recommend starting from the documentation on bitcoin.org, which is already very good: https://bitcoin.org/en/developer-refe... Ideas welcome: https://www.thefutureofbitcoin.cash