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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef97286e0864b8d9c4c407b304f61a801c21382327aa7998535b07b14789a873. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46a5057f-2d26-4a63-835f-90e338ba4ac0.json and https://artists.proofprofile.net/proofs/artist/46a5057f-2d26-4a63-835f-90e338ba4ac0.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36534415f16a826eb30895788d9733de398647df67330f0ef8b43d171323add4. 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/JPFH09704510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd2949f37e3a406742b676c6b20f2fcffb299a181a0bddb55038163fade7cda. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPVI00107130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058f64d6a2653ccaa9eafcbe83a118918005e4e4d0bbe8139a2c7ccc899dfdd4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPVI00107160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97a4d4a7045ac50e34871ce40c26ad1db6b699f40502b48c82fc0c96416a65d. 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/JPVI00243910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7acd23c7581cdbcdac7c1a4c23676c7ae531e328f921277d11c4c7d64d3ff2f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPVI00243960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e0e79559ac2012f02c66358622ac4e0886d563fb7996f8d645ba8ccb37448f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/JPVI00405800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf92fd2c75cff1bd0d91e73f45d6c155169bf2a400b3398a51dd8477c667c880. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/JPVI00405810.
塩谷 哲＆小曽根 真 [デュエット]（ライヴ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e357bc9930fa19fdd748fba4934dc4e2e2aef34ecd42bb43d017f7180e32b8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPVI00605630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ffde69d618c406f2d96161235f6da040e69ebefed77ce47fe447fd688ef357. 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/JPVI00901180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb3a6381436eda461df8be3440a424a8ff7d2998826ab6e5766377d10aa710f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPVI00901200.
フジテレビ系ドラマ「無痛～診える眼～」オリジナルサウンドトラック
無痛～診える眼～ オリジナルサウンドトラック
City Hunter Sound Collection Y -Insertion Tracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad445eaa0f3cf24b919c388075c455232c8ac9e2adf348d86e6f2ca35270d8e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPES09103060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836f95a358112622830bbe4ec691eb65d5774daaffaa7f1f96b23c917023850f. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPES09103090.