, also known professionally as Sayaka, Lily, and , was a Japanese actress, singer, and model. She was the only child of actor Masaki Kanda and pop singer Seiko Matsuda. Early life Kanda was born at T
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 0x2e15e816bd2db1998216e515cdd911a048f32a89fe129f24673436e9a77ea456. 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/83d3db83-d4b8-48a2-b0cd-3dd51d16b2e8.json and https://artists.proofprofile.net/proofs/artist/83d3db83-d4b8-48a2-b0cd-3dd51d16b2e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1615efeef73c31ad9c7504b41eac5312dd4163ddc6673d798b127aca021c4c5. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC01100274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73cdeaa7fe85f9a71272667d474c0193110521b162fca6b6078cba5b49cd9da. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC01100275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015bac3dd8e04928846c31510dbb9dfc11c5df534c698d024ebb1ebd03aa30e8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC01100277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55692071de4f2fc84d8abf2fce564253177164fdd6244aed75db4f14988d99e8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC01100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c397281a3cc346b6cf3b7875e17ac39e011097c9356e1274d249d5085c83c2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC01100280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406d346a22cb4fbfbc092209b04aa9498e1024eb78b1bbeabff0d773dadc85d2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231800090.
シンクロサイクロトロン・スピリチュアライザー。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78232b4beeb7271d8af49612c1a5600d2061b45f14d3c263bd28c85b1593faa0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97be4f7455f26d524fe403df8478fe2fb608ea6870b43e7eb66605d9eb4edd02. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdacc6909763a0c3274b6a9af983a19babbf3b0d99c4585bc3aeb2632ea971a6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53899c9184001f0a3d7a92e8550abe82da4d3f0b5e2c87688c24f450f876a2d7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231900427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa8b698cd9d4a234945be6812a7025e8082106df5c75be03cd74d2307f2842d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231900429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1650084ce8e78d6f5f012b8c97c9c69533f89c9ec83ffce901e7fc0328bd83. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231900431.
心とかいう名前の未発見の臓器の機能についての考察
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78570f7a1bef368e93a6dfbef220cc291d5725e25a51f24e2911e9f163e26839. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231900437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53be4d9d9c596711479cd5e0476077bde9bbdf7470bd03a8a0c3f6abb185d66b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:26:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4a1f2b078703473cd59152b12fa5cd3ae0a3b2e4cce41c843a7f7b5ea5a9e6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02001508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d064063d984eff6984570b0909d456b271500dca1aae1e2e9eee70f5e25ed4e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02001815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d064063d984eff6984570b0909d456b271500dca1aae1e2e9eee70f5e25ed4e. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02001815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb676075966b2cdccac09174a386600656f6b2ad70c03d058f0bf39346f85804. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:19:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02100911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35514a082988f8c598e813bbc5eca75dabdabd26f45837f88023caa7ee4d11e4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02100915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9410f1e6ac8bcd99d975952fdce5ecac6f0b6a52e9a41db7e332a545ee91aa4f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02100917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4a9b4f97ceee7c1b5b52ae0e67f14f20e007bc51079d198666c1798db10d1e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02100918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0415750dd8f94abd3fdd77206cdd26b7c7b9205154af734ef065bc53e9dca0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02001465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91be4a8b2284f52636a3ee59ad7d1d924e1e4e3a1589df93b1b69f5e1a5f4a4b. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02001816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91be4a8b2284f52636a3ee59ad7d1d924e1e4e3a1589df93b1b69f5e1a5f4a4b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02001816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc634da64c9b75e30e21eb4cf2e340047d6d77ddfcfc1bc43f740e7814968ca9b. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:19:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231900434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876f3e0895981f44decd3333bc9a56040ff7c9945dd4f48cc409cffdbf8bb43a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02212782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f19eca514a4d3d18bb28574ba8c8dd53bbb52ee9b9a98e3c7f9de07e6e40adf. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:50:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC01100285.
For the First Time in Forever - Japanese Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6072991f40b2d41cb0fc0c28c34c440cfa5729d67cd5ba260618608813d3f264. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ade75fe500dc446847663bbe3ef95d2c9e3d70c9f226032ec16f07e5a8db6f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467538.
Do You Want to Build a Snowman? - Japanese Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1e0752ab2dcf1680b9f835bc3553c3e5f5adfb97abbab03b373bd668377f2b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467536.
For the First Time in Forever (Reprise) - Japanese Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfe309d539c7a6c266277b284e6ff5189ebe89c07814f631a0c1c7260a5fa1c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467542.
Frozen (Original Motion Picture Soundtrack/Japanese Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1e0752ab2dcf1680b9f835bc3553c3e5f5adfb97abbab03b373bd668377f2b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6072991f40b2d41cb0fc0c28c34c440cfa5729d67cd5ba260618608813d3f264. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ade75fe500dc446847663bbe3ef95d2c9e3d70c9f226032ec16f07e5a8db6f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfe309d539c7a6c266277b284e6ff5189ebe89c07814f631a0c1c7260a5fa1c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1e0752ab2dcf1680b9f835bc3553c3e5f5adfb97abbab03b373bd668377f2b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6072991f40b2d41cb0fc0c28c34c440cfa5729d67cd5ba260618608813d3f264. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ade75fe500dc446847663bbe3ef95d2c9e3d70c9f226032ec16f07e5a8db6f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfe309d539c7a6c266277b284e6ff5189ebe89c07814f631a0c1c7260a5fa1c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11467542.
Atelier Ryza: Ever Darkness & the Secret Hideout Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76c5d5551f6e67cce416b57f4edb37b01170fb1e14949a57e44a9a211898c24. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD101950344.
For the First Time in Forever - Japanese Version / Duet Karaoke Version with Sayaka Kanda Vo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceba378d7d1ead5e1f532608da5577f7e59a53f47f7039d92b08a8c1b1342dc5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11469178.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Love Is an Open Door - Japanese Version / Duet Karaoke Version with Sayaka Kanda Vo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0074c95e0803ead9340ef778b34c04c80bae6a4cef8160dcb61973c2604764c6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11469180.
For the First Time in Forever (Reprise) - Japanese Version / Duet Karaoke Version with Sayaka Kanda Vo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8631620f228a04ffff2db8e033faeb436236847499fa68c83dbafe92fbc742. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11469182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f27379d6f77124ec1c32f76a4fb98ad87fe23b4537de4c30a1f820a5504adf9. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11995212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4abf2539121209568bee284a07af75d49f093440f80f339b0aa93009cc34b5. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11995218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc319613ef04771285d7e537c3985079f7e382064a6741482434de4dba009ca2b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11994016.