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 0xb41aa5900e043e09c3fd0b30e06276c94da4a427a2384add9d09894e2bae39aa. 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/005d2e8b-38b0-4f57-a6df-b0154beea5bb.json and https://artists.proofprofile.net/proofs/artist/005d2e8b-38b0-4f57-a6df-b0154beea5bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
レイジョアハンズ!! ～Raise Y/Our Hands!!～ <TVアニメ「私の推しは悪役令嬢。」OP主題歌>
O.C. ～Optimum Combination～ (episode1ver.) <TVアニメ「私の推しは悪役令嬢。」ED主題歌>
O.C. ～Optimum Combination～ (episode5ver.) <TVアニメ「私の推しは悪役令嬢。」ED主題歌>
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 0x8b83250245de2753cdffe1a15089aa7021951e75ce9a75e0dd859f62a13b0ff1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPKI02313435.
O.C. ～Optimum Combination～ (episode6ver.) <TVアニメ「私の推しは悪役令嬢。」ED主題歌>
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a23cb243af04db9878e00c5d5b31b9e6e930d3ca06de183d18f4bffbdfc793. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPKI02313437.
Raise Y/Our Hands!!/O.C. -Optimum Combination- (From 애니메이션 "내 최애는 악역 영애.") [OP/ED 테마]
レイジョアハンズ!! ～Raise Y/Our Hands!!～/O.C. ～Optimum Combination～ <TVアニメ「私の推しは悪役令嬢。」OP/ED主題歌>
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b566dc03b6ca09c032cec692a5462bd2dc502d501f6074c7f7ad43a26cfb2e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:41Z), 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/JPKI02313310.
O.C. ～Optimum Combination～ -Side Claire-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeb5c83dd6bb4b27dafd8819e91c859ba614545c0af9ce083e98707bd6a3943. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPKI02313311.
O.C. ～Optimum Combination～ -Side by Side/reverse-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28eaabe9a07bcfa1c0d2521384f7fe3e38ae09403a9263c7198b50517d6bb91. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/JPKI02313312.
O.C. ～Optimum Combination～ (episode10ver.) <TVアニメ「私の推しは悪役令嬢。」ED主題歌>
O.C. ～Optimum Combination～ (episode12ver.) <TVアニメ「私の推しは悪役令嬢。」ED主題歌>