1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4df1eb068ef78d9593f21dcb46ca4d9ecc8ce86a206eccc912264fe55489fee5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f9e7cac-8ffc-43e8-ad93-f161eb335424.json and https://artists.proofprofile.net/proofs/artist/9f9e7cac-8ffc-43e8-ad93-f161eb335424.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oh! Met∞cha ～つまりはすべて夢のせいにすればいい
せつない時は僕がいる ～素晴らしい世界～
君がそばにいてくれたら それだけでいい
The Night (Live at Aoyama Spiral Hall, 1998)
REAL ACTION - Live at Aoyama Spiral Hall, 1998
I WANT YOU - Live at Aoyama Spiral Hall, 1998
そして僕は途方に暮れる - Live at Aoyama Spiral Hall, 1998
Free Bird - Live at Aoyama Spiral Hall, 1998
ずっと甘い口唇 - Live at Aoyama Spiral Hall, 1998
僕らはまだここにいる - Live at Aoyama Spiral Hall, 1998
ガラス越しに消えた夏 - Live at Aoyama Spiral Hall, 1998
愛する君へのバラッド - Live at Aoyama Spiral Hall, 1998
GOLDEN☆BEST / 大沢誉志幸［I.D Y Ⅱ］Y COOOL BEST COLLECTION（水の中のナイフ）
TraXX －Yoshiyuki Ohsawa Single Collection－
水月鏡花 Y.Ohsawa 30th anniversary album self cover & new songs
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f707c7eea4ee93d0ff4811168fda3a433022d58b6405040333788f974928a0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7LXK8xl9FYuJEjZLiTj2qb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7LXK8xl9FYuJEjZLiTj2qb.
MASCULIN- FEMININ 〜 Serious Barbarian II
Oh! Met∞cha 〜つまりはすべて夢のせいにすればいい
愛の迷い ～you gotta feel me, keep on dancing～
YOSHIYUKI OHSAWA 40th Anniversary NAKED-裸の肖像-
{"copyright_id":"0x25fd0023c3489461032cba05db2634d63e3b5da8ccc75fb89dfb826056c9274a","isrc":"JPES09205720","name":"そして僕は途方に暮れる (1992 \"naive″version)","registered_at":"2026-06-07T07:00:20Z","spotify_id":"1fDYgPSoNbMAHvtc4BB3pB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fd0023c3489461032cba05db2634d63e3b5da8ccc75fb89dfb826056c9274a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1fDYgPSoNbMAHvtc4BB3pB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1fDYgPSoNbMAHvtc4BB3pB.
{"copyright_id":"0x25fd0023c3489461032cba05db2634d63e3b5da8ccc75fb89dfb826056c9274a","isrc":"JPES09205720","name":"そして僕は途方に暮れる (1992 \"naive″version)","registered_at":"2026-06-07T07:00:20Z","spotify_id":"5vgNAL4bBGwTrpU5jIeboK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fd0023c3489461032cba05db2634d63e3b5da8ccc75fb89dfb826056c9274a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5vgNAL4bBGwTrpU5jIeboK.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5vgNAL4bBGwTrpU5jIeboK.
劇場版シティーハンター <新宿プライベート・アイズ> -VOCAL COLLECTION-