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 0xf16c9008af5b4749726e20ec37d1838ba52a4597fb89195e22ed831df37d616c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f2c092f-e5db-4e8d-8438-be4aab7ea28e.json and https://artists.proofprofile.net/proofs/artist/3f2c092f-e5db-4e8d-8438-be4aab7ea28e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xc60bdd086c479885a89a963596eecb7eaaed517402a53fd291d01adafe05384c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6k0Sv7UAXmav6OdVBK9qoB.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/6k0Sv7UAXmav6OdVBK9qoB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6d4ab68b475c8e97c02e82dfaed3a7a7c0a0a4210209187288de6c31257677. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1iiQ1fXyuGOQwOUid9cefB.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/1iiQ1fXyuGOQwOUid9cefB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1e0bdb3952ced930128a04d420fb4655510c93df28a3abf791bdf5bc6a572d. 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/5m134MyWAKb73QiCUMiS5o.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/5m134MyWAKb73QiCUMiS5o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ffbfda0e8a231fedc1fd3cbc02a9b21f26ac8e97089f4c8f626b22b766b896. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5XiGHUCDs8PCMrgTSB0oiN.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/5XiGHUCDs8PCMrgTSB0oiN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cb61cded3d1435d2a8d0f16907398d09c00e56c614a13d21b87daa7d1f9902. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0KJPrLoWwmtLlIzXuLNREv.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/0KJPrLoWwmtLlIzXuLNREv.
{"copyright_id":"0x3c89e4e4d2d9a0add1814d6628cb06a6baec21e56ea9d3ed3d8e16837bba5d02","isrc":"JPB600575010","name":"のうぜんかつら - リプライズ","registered_at":"2026-06-17T22:36:51Z","spotify_id":"1UoH4VvLD0w5UP2rvFnlwY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c89e4e4d2d9a0add1814d6628cb06a6baec21e56ea9d3ed3d8e16837bba5d02. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1UoH4VvLD0w5UP2rvFnlwY.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/1UoH4VvLD0w5UP2rvFnlwY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6d4ab68b475c8e97c02e82dfaed3a7a7c0a0a4210209187288de6c31257677. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4aLF2E888h1gW91rovAT0Q.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/4aLF2E888h1gW91rovAT0Q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1651216bd0c6289b9c524643857bb23e994d211a729993267791d437598c48. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5ztBI8nH86jSBbmIKgnm4O.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/5ztBI8nH86jSBbmIKgnm4O.
if... - THANX!!!!!!! Neo Best of DA PUMP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a56578b41895f2528b9a98450a4bac020bbd66990ba6744f055f085aba11d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/07r9S1YPdALgwzQ4R77UzT.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/07r9S1YPdALgwzQ4R77UzT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dd4883a2b56d28eaf9838785b2ae10a3ec8b5012eda1ce87f0cc8c90dcacba. 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/5HH0Y1Mgg2fKbtkbS9J0tA.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/5HH0Y1Mgg2fKbtkbS9J0tA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b1e4e43366e69c438b4b171cf1028023e8dbb3339c643a2714c17e527d2604. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5WP72VcsQXbQd4U53qwubx.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/5WP72VcsQXbQd4U53qwubx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673e309231a7ed7831c41e5b1732ab45e08d79f3bfc98186446031a9d9e524dc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5LaDgKp0YTBd7AcPb504EV.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/5LaDgKp0YTBd7AcPb504EV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597e591549997cb555ac04815023d53028d14597024961a65ca9c9879b8cdaf7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6PjFu0GIChfyntTWXZsHwm.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/6PjFu0GIChfyntTWXZsHwm.
淋しい熱帯魚 (メインボーカル抜き)
幸せの隠し味 (メインボーカル抜き)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7fe2d7094e6b25e19f72cf45e907078808806a4544da887f3d876612652508. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1pDpDD6dwKrRhhoK8HLMA2.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/1pDpDD6dwKrRhhoK8HLMA2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cabc23dead3fc678ad995cba9bc4dd8aab500f4afb9216443fd6256997e923. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5L5jOlCu1fAZKBMYdGSGiM.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/5L5jOlCu1fAZKBMYdGSGiM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe602b860ce66874c00c30be03fa1c3377dfbfb7e362eb7704c04c65461060739. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2PZmtcpYnYvUlWfpfpTICp.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/2PZmtcpYnYvUlWfpfpTICp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12538469027cc55ff2ef2808c4a6b85ff0c4881fd0352709f4f21bb29cd55743. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5E7TsDOXr0Tq8Pjnbndp0j.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/5E7TsDOXr0Tq8Pjnbndp0j.
home - 10th anniversary version / オリジナルカラオケ
あたらしいともだち・これからもともだち～新沢としひこ&中川ひろたか お宝発掘&名作ベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0599906ddb007a54fa2fc7891233c2887bdeeec304d039824fda4612eeb8c9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1eKmNOOv78F32qMjgymIO6.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/1eKmNOOv78F32qMjgymIO6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cefbc19f58377ce42daff9863fbcfac955edd24966dbd11094e0531325e8378. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ehP63shbX5RIU3NQv8I4G.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/2ehP63shbX5RIU3NQv8I4G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5051bada02b169eea92b1f6018c4bed40c19cb9d77c93fb7b2ec8f4c6486d01. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6miZyVx1oc80QY8CmhxRHO.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/6miZyVx1oc80QY8CmhxRHO.
星が歌った物語～ポロ兄ちゃんとタンちん君～
Everyday (feat. marshmallowneko & iyan D1KE)
お正月・新年をむかえる歌～節句や行事に聞きたい音楽まとめ♪～
おしょしょしょ正月は〈羽根つき歌〉
いちもんめのいちすけさん(毬つき歌)