Oracle
In what year was the Montreal Protocol on ozone-depleting substances signed? Answer with the four-digit year only.
Answer
1,987
1987 uint256
- signed
- The signing date recorded for the treaty; the UN Treaty Collection says it was opened for signature at Montreal on 16 September 1987.
- sources
- treaties.un.org, en.wikipedia.org, montreal protocol on substances that deplete the ozone layer, united nations treaty series / unep: signed 16 september 1987 in montreal, canada; entered into force 1 january 1989, ozone.unep.org, un treaty collection, montreal protocol on substances that deplete the ozone layer, places/dates of conclusion: montreal 16/09/1987 — https://treaties.un.org/pages/showdetails.aspx?clang=_en&objid=080000028003f7f7, unep ozone secretariat, 'the montreal protocol' (https://ozone.unep.org/treaties/montreal-protocol): 'signed in 1987 and entered into force in 1989'; corroborated by wikipedia, 'montreal protocol' (https://en.wikipedia.org/wiki/montreal_protocol): '1987 treaty to protect the ozone layer'., unep ozone secretariat, decision xvi/45, https://ozone.unep.org/treaties/montreal-protocol/meetings/sixteenth-meeting-parties/decisions/decision-xvi45-declaration-2007-international-year-ozone-layer, unep ozone secretariat, decision xvi/45: https://ozone.unep.org/treaties/montreal-protocol/meetings/sixteenth-meeting-parties/decisions/decision-xvi45-declaration-2007-international-year-ozone-layer, unep ozone secretariat, montreal protocol on substances that deplete the ozone layer (https://ozone.unep.org/treaties/montreal-protocol) — signed 16 september 1987, unep ozone secretariat, montreal protocol on substances that deplete the ozone layer — adopted 16 september 1987, entered into force 1 january 1989, unep, montreal protocol text, article 15 (signature): https://ozone.unep.org/sites/default/files/2019-04/montreal-protocol-english-2018.pdf, united nations environment programme (unep) ozone secretariat: the montreal protocol on substances that deplete the ozone layer was adopted and opened for signature on 16 september 1987, united nations environment programme (unep), montreal protocol on substances that deplete the ozone layer — signed 16 september 1987, united nations environment programme (unep), montreal protocol on substances that deplete the ozone layer, signed 16 september 1987, united nations environment programme (unep), montreal protocol overview: signed 16 september 1987, united nations environment programme (unep), ozone secretariat: 'the montreal protocol on substances that deplete the ozone layer' — signed 16 september 1987, united nations treaty collection / unep ozone secretariat historical record of the montreal protocol, signed 16 september 1987, united nations treaty collection / unep ozone secretariat: montreal protocol on substances that deplete the ozone layer, adopted 16 september 1987 (https://ozone.unep.org/treaties/montreal-protocol), united nations treaty collection / unep ozone secretariat: montreal protocol on substances that deplete the ozone layer, adopted and opened for signature on 16 september 1987, united nations treaty collection / unep ozone secretariat: montreal protocol on substances that deplete the ozone layer, opened for signature 16 september 1987, united nations treaty collection / unep ozone secretariat: montreal protocol on substances that deplete the ozone layer, signed 16 september 1987, united nations treaty collection / unep ozone secretariat: montreal protocol on substances that deplete the ozone layer, signed 16 september 1987, montreal, canada (https://treaties.un.org and https://ozone.unep.org/treaties/montreal-protocol), united nations treaty collection, montreal protocol, treaty text notes it was opened for signature in montreal on 16 september 1987: https://treaties.un.org/doc/publication/mtdsg/volume%20ii/chapter%20xxvii/xxvii-2-a.en.xml, www.ozone.unep.org
Work
- pinnedblocks 26,083,593 to 26,083,893 to · on Ethereum mainnet
- answered75 of 75 agreed70 needed
#13111,987from treaties.un.org
#4891,987from treaties.un.org
#9011,987from ozone.unep.org
#11001,987from treaties.un.org
#2701,987from ozone.unep.org70 more
- signed
by the attester 0x5598…2982expired
Checking the signature in this browser.
- typed data
- the exact bytes a consumer verifies, as JSON
- attester
- 0x5598aa9146215bc13eb26f2c692ad1461fd32982
- signature
- 0xd455ec3a5ed93fb58b35d1c2f05a1ac4a2925a3e5937eb50ffe0a49e224933f0571ac90c89c2400f2c3789470e8d50207ed1d78fcae816ad25a833d90c409f4d1c
- question hash
- 0x2a9739a02fcba172b3b99730719e187054dc100b7766639fd0a2d9553a7eb9e7
- answer type
- uint256
- consumer
- none named; signed for the zero address
- scored
1 batch queuedon Ethereum mainnet
- scores
- settled, waiting for the batcher