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 0x9e6de7ce9da93d9311c84af13f6b04198806c74af646d9e64795838008b55e2a. 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/439bfe0c-28d4-4508-858e-9a52d191aea1.json and https://artists.proofprofile.net/proofs/artist/439bfe0c-28d4-4508-858e-9a52d191aea1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
頑張ったっていいんじゃない(Acoustic Live ver.) with 制服女子歌い隊
{"copyright_id":"0xaac504a08e7f2f9dee1fd2ca3fc75bfd3f97292b0a052135b2056b0c29d275a9","isrc":"JPVI01508450","name":"Happy Days","registered_at":"2026-06-29T08:47:58Z","spotify_id":"60kmqqIstMxyLo45wxJDZG","type":"track"}
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 0xaac504a08e7f2f9dee1fd2ca3fc75bfd3f97292b0a052135b2056b0c29d275a9. 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/60kmqqIstMxyLo45wxJDZG.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/60kmqqIstMxyLo45wxJDZG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa4466872712973743ecd80b99e69909d3d9f39a3fdb140d7981c31354b138a. 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/6buKi9BNOpNlrzRVDqUAG5.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/6buKi9BNOpNlrzRVDqUAG5.
{"copyright_id":"0x7dbba1b3ee0cd3b023afa6d3e27a137445c3e588aed429f8a8a3c3fbdbd0a4cb","isrc":"JPVI01520010","name":"My Way","registered_at":"2026-06-29T08:52:28Z","spotify_id":"7IDWTbGKu2xA22w37BN6Ei","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbba1b3ee0cd3b023afa6d3e27a137445c3e588aed429f8a8a3c3fbdbd0a4cb. 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/7IDWTbGKu2xA22w37BN6Ei.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/7IDWTbGKu2xA22w37BN6Ei.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a56de24e525d1801eaea9d132e3dc6ecdb99723b6479da6277aeabda9b40e3. 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/5poaYz4VeD6rehe4RasBWF.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/5poaYz4VeD6rehe4RasBWF.
{"copyright_id":"0xd02c67bc954a6f3f9de8316a010d1ca1b8897cf2ac262132bda8e9e7b52bd5e6","isrc":"JPVI01822150","name":"みんな空の下 - Sound Inn \"S\" Ver.","registered_at":"2026-06-29T08:48:34Z","spotify_id":"0zHPN3pxDb2uPfumxPJeFP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02c67bc954a6f3f9de8316a010d1ca1b8897cf2ac262132bda8e9e7b52bd5e6. 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/0zHPN3pxDb2uPfumxPJeFP.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/0zHPN3pxDb2uPfumxPJeFP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4211291d910577d53bacce0975d5f3585d131bbc498e10b8d9fd0c9f03bf748. 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/4UD8wBKxUrk8cjuhgyLhcc.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/4UD8wBKxUrk8cjuhgyLhcc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487757f4f688dd4a61847b18818508ad7601a42c2f3dc342f725f22ff0f64d4b. 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/3JIrxylho8aMCbniPPEXUI.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/3JIrxylho8aMCbniPPEXUI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4eb529fb3195f367d90da957b56a5a28a4a8494bd69417e3e9140fd825da880. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4L1sGy9xndII0ZgVjBIBub.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/4L1sGy9xndII0ZgVjBIBub.
サヨナラの準備は、もうできていた
Anniversary (All Time Single Best 2014-2024)
We'll Have To Say I Love You In A Song (2024 Mastering)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4eb529fb3195f367d90da957b56a5a28a4a8494bd69417e3e9140fd825da880. 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/0TuuckZPTZ08t0kvvJ6nVA.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/0TuuckZPTZ08t0kvvJ6nVA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94732d5a9c90722e0a00ffc83258f0db04da6328ebad92673d90ae573e8cc65b. 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/70AWGa1A4tm46tQtEBd48k.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/70AWGa1A4tm46tQtEBd48k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7495d81841b358aeb2db9d283c9febc8c813c937530b620721853b1e2c1b424. 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/2xyYNiNB5ihVVEXuOW8zmN.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/2xyYNiNB5ihVVEXuOW8zmN.
10th Anniversary Tour 2024 “ハイッ！10ション！”～Live at Zepp Haneda (TOKYO) on September 29th, 2024～
おどるポンポコリン (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Over The Rainbow (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
真夏の太陽 (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
踊ろう (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
瞳 (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
愛のせい (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
花まつり (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
サヨナラの準備は、もうできていた (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
ちっぽけな愛のうた (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
大好き～頑張ったっていいんじゃない～Hello My Fave～READY GO! (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
サンキュー。 (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Anniversary (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
明日も (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Close to you (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
10th Anniversary Tour 2024 "Hi! 10Shon!" ~Live at Zepp Haneda (TOKYO) on September 29th, 2024~
Odoru Ponpokorin (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Viva The Sun! (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Odorou (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Hitomi (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Ai no sei (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Hana Matsuri (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Sayonara no Jumbi wa Moudekiteita (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
We'll Have To Say I Love You In A Song (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Daisuki ~ Ganbattatte Iinjanai ~ Hello My Fave ~ READY GO! (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Thank You (Live at Zepp Haneda (TOKYO) on September 29th, 2024)
Tomorrow Never Knows (Live at Zepp Haneda (TOKYO) on September 29th, 2024)