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 0xf230754f43958f8c7a087871ff5a388782fd48a4107a89fba99bba42c951ac6f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7424d71b-ec3e-47a5-a9fd-b80851de5032.json and https://artists.proofprofile.net/proofs/artist/7424d71b-ec3e-47a5-a9fd-b80851de5032.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcf12baaf8e856d1ff9db8dfd4d3a8a9fbb639a1587db846a790f7c03058600. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/JPTE02301890.
フライディ・チャイナタウン feat. 脇田もなり
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364b9ee3a9bc71423854f776b32a6bae13b409a890056a037471b32e74a0bd82. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JPTE02301900.
Remember Summer Days feat. cherry (SPARKLING ☆ CHERRY)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa30b245e4f91c454fdea55c391cdebf3067d68d7f67a2eba221365b6b1fbc0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPTE02301920.
SCOTCH AND RAIN feat. ミズノマリ (from paris match)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0e7f2507b7182d13949637b952fc5764337c25641eb308e5e22df4cc57582e. 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/JPTE02301940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82152bfec3a24edbf3df967e0dd452b77055b2f59961af3b2a318e07ef3928d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPTE02301950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3bc7e7da91ea8f01cca80a09629e409450cfaa37a69fb1445da0ca77635fcd. 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/JPTE02301960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eee9c05647ddb471cfa708abe315b07bbc26ec7163e7a2b34fb70015f5fa379. 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/JPTE02301970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9080958a2033256f1422b645455aa3a4e67f0dcf04eda8706dbef7fb6dac77. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPTE02301980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364b9ee3a9bc71423854f776b32a6bae13b409a890056a037471b32e74a0bd82. 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/JPTE02301900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9080958a2033256f1422b645455aa3a4e67f0dcf04eda8706dbef7fb6dac77. 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/JPTE02301980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcf12baaf8e856d1ff9db8dfd4d3a8a9fbb639a1587db846a790f7c03058600. 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/JPTE02301890.