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 0x62b8e3f95726ab13aa8a29e1bcfbdc4f9bd1765ef16fd1bd69822acc822cc9f0. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bbdd2c3-56df-453a-872d-91a8f56fe890.json and https://artists.proofprofile.net/proofs/artist/6bbdd2c3-56df-453a-872d-91a8f56fe890.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
どうしてサヨナラしないといけないの
レスキューしてよ！私のコイゴコロ
パステル・ドレスアップ (feat. 初音ミク&小春六花)
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 0x6a97f7cb93a7541c65b83e85a06ea3a859f66a16a9786e19de615f74b4faa6d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92Q2301783.
倍速視聴：1分あれば十分さ (feat. 小春六花)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3174a9c5dbc9c6cf61b3a1a634cfa1ffb43957982f88e02e02ae6e0da1a7e21c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JP92Q2400994.
え、僕が最強でいいんですか？ (feat. 小春六花)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171e87301bf45a6b490fb2a6b54f06274d7893338bcf8dd9683a0a170aa96f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JP92Q2401003.
迷彩カメレオン (feat. 音街ウナ&小春六花)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5b03fe8dd14f3d00daa5651f1411f417be02b0c598095c4765091c74f93d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JP92Q2401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d97eef869cf7650d394463415e2268a8b466f4f90be796ff2c2db4b5ad4a18. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JP92Q2301056.
Miracle Future Rise!! (feat. 初音ミク&小春六花&夏色花梨&花隈千冬)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb59e047ef504a889e806052246ccf418cad6484eee657c7022af1d99ae6da4. 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/JP92Q2301949.
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
それでも音楽のせいにして生きてる (feat. 小春六花)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55164953344e1f4d07fae9d843b161112f291da0458f81edd132d2cd27fcc4fa. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JP92Q2301954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d305a2e5bd7d6d4bb9914bf056c33dfa79bc36d6940b07ebbcf64a917bff7c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/JP92Q2401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504e1f2bf1657e6005319dfc5c9c859f26a61313d0759710c0096340710b983b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JP92Q2401010.
人生 (Capchii Remix) (feat. 重音テト&夏色花梨&小春六花&メグッポイド&Yuma&Mai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d3c6554541400053a984d49f47b140d5a5aab5c3c83a87fc3c997ddf78c693. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/JP92Q2401211.