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 0x9c3d65535bbdd91bc4e10592ab891467c9559aa2a55b19a7db8bbd7848ef69f1. 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/675ebc7b-75e5-46c7-9172-4ed3e613ded8.json and https://artists.proofprofile.net/proofs/artist/675ebc7b-75e5-46c7-9172-4ed3e613ded8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ「ハナモヨイ」
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 0xfdb0f75f966e0c83ed90ce129cf2b4a7f816c570fb83f5a20f2a85528197f0a9. 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/JPD732400958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8616545c8cd4666fa717d671b651b38645b468a746275481fcd77223cd46a7dd. 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/JPD732400959.
気まぐれロマンティック（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e3b4c9e079fcc3607bb79ac8c549c39e52cf448a1d486cd78bbb8e0afbfe02. 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/JPD732400957.
ワールドイズマイン（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffdde323262555fe6e7a9d8ab7749754e8a33335cb8dae04347275a6e57b16c. 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/JPD732400950.
CHE.R.RY（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e1ef0ffedff6a92466699130131e101438e54ffe610050af2cb93eacdbbf64. 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/JPD732400947.
ラブ・ストーリーは突然に（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0812015517e1a4bd171d7a85e81da5fc67864eb7513a4cd62abd2bffe5e2e107. 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/JPD732400951.
秘密の言葉（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bd6b9bbd06d3c2e25d03bcf824558c4a7ea21587dd6185a4d322f8fffc9b95. 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/JPD732400955.
小さな恋のうた（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb084cc0abb9960141be97cef3a269e64fdb66211ec4e7f38246506c3d271a883. 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/JPD732400949.
ハレ晴レユカイ（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071786e78c8dc65497623b313aa6f3af1c3f5af45cf7e4d30fe847adc5f3afe2. 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/JPD732400954.
想い出がいっぱい（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc67b3e5adad7197e2a13016300a04be9aefa9ecbcba1955ba14aec077f6b0e. 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/JPD732400948.
可愛くてごめん（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4a49ddd6183162dac75dd21dd5d19c46e31da004106d36c0e690757e73e923. 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/JPD732400953.
学園天国（TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」エンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3a0e77252424abae395dd6c2b7b87b2413e9094deeefe82cc194ad4527fdf4. 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/JPD732400956.
TVアニメ「時々ボソッとロシア語でデレる隣のアーリャさん」オープニングテーマ「1番輝く星」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7211b770be95e95b9fd0bd635a60c629b844c4918efbb5a95e74d7f851bddea8. 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/JPD732400763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47d5d6395d34f4c8d7d9d966c1035e34c4c5f089645d02b5f828b36e6f418d4. 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/JPD732400764.