1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821f5418e7e5268a37b000d19e5fce292f72e2eacf57c4bbad95c13ec66d1f05. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d1e8aa9-d5d8-4f3a-8558-692620ad1bd2.json and https://artists.proofprofile.net/proofs/artist/7d1e8aa9-d5d8-4f3a-8558-692620ad1bd2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ha Chun-Hwa's Stereo, A Folk Song, A Solo Collection Of Pops (Always Longing)
Go Bong-San's Composition Book (One Waterbird)
Ha Chun-Hwa's Stereo Folk Song Collection (Good Job, Good Job)
Composed and Arranged by Go Bong-san (A loving Couple)
Composed by Park Chun-Seok (Yeonpo Girl)
Ha Chun Hwa's Hit song 3rd Album (The Story of Fist Love)
The Second Album of Ha Chun Hwa's Stereo Folk songs (Yeongam Arirang)
Composed by Han San-do (The Namhae Girl Picking Citron)
Ha Chun Hwa Folk Song Paldo Arirang Series (Jejudo Arirang)
Composed by Park Chun Seok (Ha Chun Hwa - Please Know That)
Ha Chun Hwa Stereo 7th Album (Flower Palanquin)
Ha Chun Hwa's 8th Stereo Selection Album (Stacked Feeling)
The 6th Album of Ha Chun Hwa's Stereo Selection (On Your Way Here)
Ha Chun Hwa's Stereo First Album (Good Job, Good Job)
Nostalgic Old Song Sung by Ha Chun Hwa (Maiden by the Lake / Tumen River with Tears)
Ha Chun Hwa's Collection of Exciting Songs (Jang Seungpo Lady)
Ha Chun Hwa's Stereo 2nd Album (Stacked Feeling)
Ha Chunhwa Song Casement Ancient Times 2.
Ha Chunhwa Song Casement Ancient Times 1.
I Fear the Night/Crying For Love and Crying For You
Live Performance Album of Anniversary Concert for the Twentieth Year as Singer
Ha Chun Hwa Golden Hits Ultimate Collection
Go If You Want to Go/What Do You Mean It Didn't Happen
Celebrating Collection of 40 Years Since Her Debut
40th Aniversary Album New Released Songs & Hit Songs(2CD)
40 Years of Singing - Celebration Collection(2MC)
Live Album ; The 40th Aniversary Performance
Ha Chun Hwa 40 Years of Singing - Live Performance 1, 2
The 45th Anniversary Celebrational Album