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 0x37470ce6c7b625958107a9a7e45d72547a660688be2e4b0e5a489969058fc723. 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/f1568bd4-719e-4f91-b46a-74650322e743.json and https://artists.proofprofile.net/proofs/artist/f1568bd4-719e-4f91-b46a-74650322e743.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
愚痴り合い〜聞いてよ最近彼氏がさ、〜
TVアニメ｢天国大魔境｣エンディングテーマ｢誰も彼も何処も何も知らない｣
[TENGOKU-DAIMAKYO THE ANIMATION]Ending Theme [Daremo Karemo Dokomo Nanimo Shiranai]
TVアニメ｢天国大魔境｣エンディングテーマ｢誰も彼も何処も何も知らない｣ (#08 Special Arrange)
[TENGOKU-DAIMAKYO THE ANIMATION]Ending Theme [Daremo Karemo Dokomo Nanimo Shiranai] (#08 Special Arrange)
Daremo Karemo Dokomo Nanimo Shiranai - chill out mix
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 0xb3a19dd7af0a39792a528f4ffcf5fc7ae13e84fcbd7666d48d0eef3922c90bf1. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPPI02300250.
TVアニメ｢天国大魔境｣エンディングテーマ｢誰も彼も何処も何も知らない｣ （#08 Special Arrange）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada77286b0822af320a4c4740516568edbfd1ca238dee43d85fa83cda4648066. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPPI02400670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a62559072f809305bb1748fc5eee426a476683c583eda73f1428468c7fbe4f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPPI02401680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805c050c5d2ee4b81a04957ea2b1adb51af6d69923a9a359f18d4150ce927d15. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/JPPI02401920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a62559072f809305bb1748fc5eee426a476683c583eda73f1428468c7fbe4f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPPI02401680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41ea5ca53a9dc72ca122d73f014acbddea2cf9bdbc89bc35a16cbe4cebf381. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/JPPI02403240.
結婚行進曲(最終話特別Version) - Final Episode Special Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd67efaf70cad874c3787b4a4dcaed73efdc3031e5e5a361dc804a3ef6d8d46. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/JPPI02401681.
Yozakura#1/Kekkon Koushinkyoku (Final Episode Special ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187ff8df4596a5ed507e7702f2d0c521db43819af2686277a2d42fd7df7facd. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/JPPI02451880.
Kekkon Koushinkyoku - Final Episode Special ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd67efaf70cad874c3787b4a4dcaed73efdc3031e5e5a361dc804a3ef6d8d46. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPPI02401681.
なすお☆｢メリーゴーランドタイム｣/ASOBI同盟｢王様だーれだっ｣
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada77286b0822af320a4c4740516568edbfd1ca238dee43d85fa83cda4648066. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPPI02400670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187ff8df4596a5ed507e7702f2d0c521db43819af2686277a2d42fd7df7facd. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPPI02451880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada77286b0822af320a4c4740516568edbfd1ca238dee43d85fa83cda4648066. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPPI02400670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49e5c46b18810b6cd7767968fab272bd1aebd8dd4ca9346612f2c113dc13c64. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPPI02404100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187ff8df4596a5ed507e7702f2d0c521db43819af2686277a2d42fd7df7facd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPPI02451880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8458f821c98fe679a920a6751daa43c79bd7e602ec866b7c84608ad240889d7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPPI02404090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643361d1ef5d5351b00aa82503f5361a7b901e1976201c705867b0e8467890a0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPPI02404110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143d27ad2dd8d25758a1c704a043185d8d3fb33991c83b9d5e04560deaeb9e92. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPPI02300190.