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 0x914b7b2e4a37c879292f4af631da0ddd56d59c25301af3ff4f821b202d436e4d. 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/f7e3dfec-89e4-4866-8e76-40404e8cec63.json and https://artists.proofprofile.net/proofs/artist/f7e3dfec-89e4-4866-8e76-40404e8cec63.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 0xcc93de9c5d3ac500cf2e2a74a88e7c08767a63f18c1bd6db657fdb2947fc12b7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPVI02101243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da15fc1ec83f0f96d80038796c96e2b8787476a01bbf66e57bc7a045f91094d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPVI02103086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfb5be9dde0dc5f8215c36a7d863d4f64bfcaefc10043546c8ece8ac56aa0b5. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPVI02200312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea17a3bffea3f2bc9816adc40860fe653e9cb22019e14a154cc24e1680c74b0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPVI02201828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01eff9400f2044dfa127214f054b5fb078b7dc700b6881529fbd1a3db840e0ed. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPVI02203237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699630553444e8bd69843bdccedacace8a8e39a9fd24207180b6cf97056caf88. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPVI02203379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25de8775a2075e49d8ab9e4bcd43c09c3f275fabe96382988c204d583f5c5c1. 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/JPVI02201824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da15fc1ec83f0f96d80038796c96e2b8787476a01bbf66e57bc7a045f91094d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPVI02103086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda65a0d36d14f439d76ce074171e7183910c04e1697c7f5962999e929dfbb73. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/JPVI02302031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c6ae620701c9edf32e6b094216be1dd35fbbdf7dadcc4566a8a4af5b93b3e6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPVI02302158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa4da617cfe525925230598de8e45fe769ac758990e3717e56956e259db927a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPVI02304363.
All Day Long (Live at 東京ガーデンシアター 2024.03.14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b343e0cea2ba322a47bc575adc2843477cfda90fcb81eff10c12dde0bdd130b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPVI02401648.
Magical Hour (Live at 東京ガーデンシアター 2024.03.14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51d7b4f1dc9e8283edc21243d412d625d3318d44418c9ce0bfbe07eb5065251. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPVI02401649.
MUSIC WONDER (Live at 東京ガーデンシアター 2024.03.14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8434616e3ca8d8f45908e1f499189e69bd8338ecaa30c60206f5f5a75a355a5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPVI02401650.
This is my love (Live at 東京ガーデンシアター 2024.03.14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275cbc70dd5c2d5553c1dfd67c6a376580f06438b3919ef054c70f09d4c59349. 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/JPVI02401651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75289869ab44230693444146d7bb501299308e90de97dd22e66601bf321ddf44. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPVI02401652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964610ae19691982185f2e7da546a444a1fe9e7823d5376d7d8b5144c4b6dd79. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/JPVI02401653.
FLY&FLOW (Live at 東京ガーデンシアター 2024.03.14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad218850492b086650ebf7d724ecb655d7a09e8b47374db6b8f968793f05d205. 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/JPVI02401655.
Way You Are (Live at 東京ガーデンシアター 2024.03.14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad57b620a10366dd876a51cf07ffd1dccc013cdeb170ebdcd551888999d6a872. 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/JPVI02401656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2843e64ccf559b91a38cebb285318b49e7dede9cadd39201e8930f57ac09f4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI02401658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddbc56e12836ed09a87ceaa105ea1e8dc28729184f3394e63961722047e5608. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI02401659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e22c49d02534f5928e8449e055b2a7037453e50d07ee71468168253ad3836d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPVI02401660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57996c5eabd6ac845a937c0c0598bddadcdb628d207b8ee58f6e4969fdb4456. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPVI02401661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c97e8d41012fab5fad7f9072313ae1b419d4f96b452a095c55c3188bd845b9. 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/JPVI02401662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3850a2cdc7ef3305763cf8a11a49610c0abc5217f5f3ae4df24f12f273a509a. 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/JPVI02401663.
ノンフィクション (Live at 東京ガーデンシアター 2024.03.14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98209a5ce3b2a7f423a11eb082fd177c6214123626e56c6c81b07061f7c68fe. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI02401664.
愛してるって言ってみてもいいかな
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37d4abf47709241ff40192845e585f3b6ff006fb3ee5e7face5efeb9b421c5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPVI02403047.
愛してるって言ってみてもいいかな（Acoustic ver.）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2744458cc96f046030f5803c9cb47c97ea0a05d213002248f7d540878f6ad89. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/JPVI02403236.
Studio Ghibli Tribute Album "Ghibli o Utau"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c1c91653c5e1682c2a830d1867f0e0e1e553278034cc0dc612995ec8fd6bab. 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/JPVI02304202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76c84112cc5d1ceb87da7118819ad5cbe929a75915a359bdd49d4e0597c6ed1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPO02404569.