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 0xe229bcc06338b32431977022c9ece72ee8ea8156004a5c7bd998f9a061fdac1e. 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/421bf79b-e0ff-4ab0-afbd-567bfd6f0285.json and https://artists.proofprofile.net/proofs/artist/421bf79b-e0ff-4ab0-afbd-567bfd6f0285.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 0xfab2e717ab2d4a7b07131e8efa41da5852f9dd74c00d46e12ca015aadce2bfff. 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/JPA961000172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667a3b5fe52b2797dbb423f808be4dbf2943d3d99365e802108df35e9bd289d6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPA961000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177145ff11e25b6c805f4044eac0aa9161b02bdc912c1f0e58d97e8a2b96858f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/JPA961000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec93ef64fa00c914cefd70fdbf7a89cc19ad50ef147c04294e0e5d05f66cbfa0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPA961000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffe2a4ac5e74b6de169b71d8142da900799f7bfaede97de02888333bd43c163. 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/JPCO01610910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e65e33904378184a98fe382efa48969292695128e0888dedc0d5b0f53df4af6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPCO01631490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e78810faffe3b64c1abb48318add5fd8525b4a1ff0032c89e60cdc426187e3. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPCO01715220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704193e02e2bf187064320ab58901489db436d23c9730c186e85f98216471c96. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/JPCO01821350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd631335c01402dbdccb181b9c184964103472e789358b97606c80e97c9631bf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPCO01918650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b15e8042a3344a8735da6ae3446edcc3a343655aeae4240158ce39f15688c89. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPCO02113310.
Liner Voice+ 04 Limited Sazabys『Harvest』
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d185a3aaf6a41c94e2c581ea481cfa133dd2af24613d096e93b0cf96c3c11e0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPCO02330340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f00a1cdd62003b564e0dadbd21ebdcd56419245ae9133ae45ec24dc7391d36c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPCO02330350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b48793fa7b4c30b30165bad7c7fb484358cf691baeb47887e350737dddeeba. 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/JPCO02330360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1cbe357838a06e36342ba5d42cc1a9391a91bf105e52d602b7bfc3e802c8c8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPCO02330370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d309be74c1fef4ac92d5300c0b869b01f4cbab153cfdc3acd52c15326417fcc. 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/JPCO02330380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cfd67e2c52b052bb46be8e9a254e1929c68e6c79cafe532e2773b48a2e4b17. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPCO02330390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ecfbafdcf1c47e69b602ad621d0499a4112480610d345488dc514e0b6e56e5. 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/JPCO02330400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30505fd2cdd141f70f4f8edd9a418a3ad510413ac484280c13fe1f6821449c41. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/JPCO02330410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dadfd21af9c4bb758e09d89082d4fe94ddbca645c536204a35c2606947a2a11. 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/JPCO02330420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ecb9da393ced8a344add93a1656fd4d02bc11f975d4f573ab656b19e44e044. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPCO02330430.
Timeless Melodies - a tribute to dustbox -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c466aadca9d73b26cb40e25eb18d7b943538bf295915ed54c7d1f0f36ef51f6. 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/JPK402401177.
25 -A Tribute To Dragon Ash-(Another Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c91a0182d6a274ce351b52f3a525bbe820fb44a90f100b40a92bf1218e5c26f. 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/JPVI02204563.