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 0x26192ae7c8023779f79fabfdd3e14f4352d901b67ce9c6fdbad9779e52021b7f. 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/3a50c663-ee1e-43e5-9994-e8d2c5b74910.json and https://artists.proofprofile.net/proofs/artist/3a50c663-ee1e-43e5-9994-e8d2c5b74910.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ボヨン科ボヨヨン歌 ～愉快な大人達～
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 0x73e694bec8efbe7ed7c27b8f3a490e8c7d916bd638b1195cdc91050ea9178937. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6ANQEKJui81dRMb6xD3XrO.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/6ANQEKJui81dRMb6xD3XrO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d1a6481a50fa07142f7fe0b7b4aa862feb0b85589f2fd08090f1a6eb4bf928. 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/68ZZjDbRAXfcnauakgGaIZ.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/68ZZjDbRAXfcnauakgGaIZ.
遙か／キセキ（ブラバン！甲子園3 ヴァージョン）
いままでのA面13曲をサビたっぷりですけど、どうぞ。（nishi－ken miX）
いままでのA面13曲をサビたっぷりですけど、どうぞ。（nishi－ken mix）
歌うたいが歌うたいに来て 歌うたえと言うが 歌うたいが歌うたうだけうたい切れば 歌うたうけれども 歌うたいだけ 歌うたい切れないから 歌うたわぬ!?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7aeb0332ce62bc4dd7d3887111be01d68575e13c891e8dca08ad975c8e81493. 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/5AyNbxqugnoPcifzm7lsGn.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/5AyNbxqugnoPcifzm7lsGn.
GOOD LUCKY！！！！！ - staring グッキー（GReeeeN & ベッキー♪♯）
ワイはワイワイでいいワイ～おまえワィ?～
ありがとうなんて言わなくても 全部わかってるんだ
{"copyright_id":"0xdded650a1e9b13315dd0c2205db25f00b2371216d0359a9efa1301436b8ebcd1","isrc":"JPPO01343428","name":"ありがとうなんて言わなくても 全部わかってるんだ","registered_at":"2026-06-28T18:30:02Z","spotify_id":"1mLVU2k62QWLuTQVRehvJ9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdded650a1e9b13315dd0c2205db25f00b2371216d0359a9efa1301436b8ebcd1. 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/1mLVU2k62QWLuTQVRehvJ9.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/1mLVU2k62QWLuTQVRehvJ9.
トゥルラッタッタッティオーゥイエー！
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb616e13d8f05f70be489c9c8ed9a04cadfcfe1e592104a5b654276ee8125c41. 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/0WmhIjKHePoRH2SxdJDE6m.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/0WmhIjKHePoRH2SxdJDE6m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03d915ee6a7f3f9f9977e1e00d797efcc9fcf90dcaff1f180fa2163b70137d5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2nsFFtKVcazywERs5ajjKh.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/2nsFFtKVcazywERs5ajjKh.
卒業の唄 ～アリガトウは何度も言わせて～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03d915ee6a7f3f9f9977e1e00d797efcc9fcf90dcaff1f180fa2163b70137d5. 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/19vsNCnLgn52vWbY9i6ZaW.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/19vsNCnLgn52vWbY9i6ZaW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb616e13d8f05f70be489c9c8ed9a04cadfcfe1e592104a5b654276ee8125c41. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2JfNzfzuoQZIKTVoHqefZE.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/2JfNzfzuoQZIKTVoHqefZE.
今から親指が消える手品しまーす。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eeff05d8ff0c3a1528e07ea10f636bcf7b6896a9894284c14a960dfb37afe12. 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/4ClJ03Ao405vB84UDNXNqx.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/4ClJ03Ao405vB84UDNXNqx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa305e3266251062b5ff0e31fb908707efb210171577927a4a34a8e2306defd9. 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/5RfR5BnceAWPK0mbMy9HzV.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/5RfR5BnceAWPK0mbMy9HzV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f62353a3ede8d335c4c55f6e4685b3388c701c8eaf665c67d5803a9b632472d. 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/3WT0kkW4F4vCDdBVeAxI3V.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/3WT0kkW4F4vCDdBVeAxI3V.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d68e47c3cf6643145a0f56c5347d5d31e66485fe460f541ae123726fee420d1. 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/6JCYgv7BFNVgQ3D9DhgUWw.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/6JCYgv7BFNVgQ3D9DhgUWw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a79f0741815e875eeedad07e144193e0708f9e3cee2a0c13a84abc112310474. 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/7Hu3NDin59eWrgMVacE04w.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/7Hu3NDin59eWrgMVacE04w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8172c4f747512b3d81b9cf626662edbf82be36fbab0d83a285d42414679ccc. 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/3TM2k26FTNQcGGWkwT7n0J.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/3TM2k26FTNQcGGWkwT7n0J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad16d61fade4bb29c029768f4e98e672d53b6b6c46880b597ac675f6d590d4e1. 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/6nZdqnlVq7Hy6kylQAoth2.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/6nZdqnlVq7Hy6kylQAoth2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad16d61fade4bb29c029768f4e98e672d53b6b6c46880b597ac675f6d590d4e1. 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/2T64jiJqxQ3RQ9N4SfdKt5.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/2T64jiJqxQ3RQ9N4SfdKt5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed277ba400aa51e2e87f91542d14e59208f897ee1cf19b57adedfaf6b088d516. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/66U8I2vEmZ9hygaaO6ijrd.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/66U8I2vEmZ9hygaaO6ijrd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9645512ef1a092e4020f6d8c5ef7aec1b20eda10f16ce5a2c92d7491ced8c4. 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/7oAgQ4kwMAQSGEWggNms3J.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/7oAgQ4kwMAQSGEWggNms3J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f04e958cc79520d405f5993aa9625ef0bb48391d4ef9829268acf3e7b5d474b. 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/3wQSd5rz1fcUIuRwefxHs7.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/3wQSd5rz1fcUIuRwefxHs7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c836f558c544569c8b8f56bcc1e7bc45ff6d4841342c43cb73915b5d40660c. 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/22QVS2gmqfyURy0ti4rBLF.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/22QVS2gmqfyURy0ti4rBLF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde71828892ae7bc90aa61a35763e28223a0f739d74d6fd556b7d11d28eba5735. 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/4yPFw1Rd5eAIyAm5qxDZhT.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/4yPFw1Rd5eAIyAm5qxDZhT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f2b9647eb028beb362410b25dc995f08ea502a0ebd6a89c49b47a13a3408ae. 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/5agCNuqMoOWOvW7qojsz27.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/5agCNuqMoOWOvW7qojsz27.
出会いと別れの季節に ～明るい未来を送るあなたに～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa313ace9d675b0e5fdb864cbaffa4ad6583a42cabd24c4aedeb397de5f7c395a. 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/6WWBic5iqUeKvzy404P0Bc.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/6WWBic5iqUeKvzy404P0Bc.
ローレライ (New 東京混声合唱団愛唱曲集)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc4ef22cc4c943a6022a5c255495c538c77206b786fe505678b6a22ee125446. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/23PmutFbwFY7PTZQzfFIyh.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/23PmutFbwFY7PTZQzfFIyh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36010c2176437e22f25ee6a0b115959b347c9351daa702adc3223de16f5a4c76. 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/2TXw8JEBwM2D4NdCmN1BO2.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/2TXw8JEBwM2D4NdCmN1BO2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc550b8b6111204b097e4bef0c094001264b27126e27463f9013452e643081dc. 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/55DJLpirknQ1y8iAAnvdze.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/55DJLpirknQ1y8iAAnvdze.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed277ba400aa51e2e87f91542d14e59208f897ee1cf19b57adedfaf6b088d516. 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/17uHxCEhix8OnuH3QeDhqC.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/17uHxCEhix8OnuH3QeDhqC.
Japan Air Self-Defense Force Central Band
Studio Ghibli Tribute Album "Ghibli o Utau"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb616e13d8f05f70be489c9c8ed9a04cadfcfe1e592104a5b654276ee8125c41. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5956kiSj5qZBUk8jVlxdR7.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/5956kiSj5qZBUk8jVlxdR7.