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 0xe4109a2ad20542023601f2d37e45b5fc70f89ed392ab44d501b854cb48bdc746. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69d9f0fa-32fb-428b-8307-6d84f0061d88.json and https://artists.proofprofile.net/proofs/artist/69d9f0fa-32fb-428b-8307-6d84f0061d88.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 → block OTSBitcoinBlock must exist at that height 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 0xb7d38966f2f9ccd1e898c19e1aa14b0a002d9c2f875d5ff3f7bfa737cc5235d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6P2144504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1be3af43854e7e8e992362e0b45e2592ae229c64384c27609758a08399a204e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6P2144511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbdc2f413fe5d4c80ea50855ab94298d0bed9d070333ef8bf7de2fe30a91e97. 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/QZK6P2144512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3384412fbcf6f164b46dc3c24aba735159ec74c72c8b8bf0f51026a7f4175dd0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6P2144513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377de080bb93a27884ace62e4460b6a436527768f51ced163782c11445574e1e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6P2144516.
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 0x85489e50ea25375ca37d87012dfb6afd4031d5bce21953cb45853789cab38d9d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM81198444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd168e768a1f3ca2d26938d889b00e20fd27c47ceada5208fa97797b2cffd3660. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM81198445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24d615bf65cb77ae61e2d246777a6e6a6a65f129c989c595f57db59a71e79d1. 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/USHM81198446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0039ab89434090438805b3c11cc77fe7bc76ebfe421bd1ecd373293908e29c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM81198447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8613f5b88f164219d687a0e486d60bb5531e76a9e691b9f0ef4db1476fe2cfe8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM81198448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ded43f0dbe4e48187b0765faba0001e893f266c3c2d4330efe8a867c764235. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM81198449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa931f90ac9077c15ad48bb3c805b99836629049f98f28bc78a1842ddcba47e4d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM81198450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7855daef42c58d5740aee289fd0b7c0ef0cb979e2ff2b31d63d527b981a277. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM81198451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a03bd5e0748a229b37d2e0b8f228df4ec13ca6b856ae73d537598b2352c36aa. 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/USHM81198452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6131f4a6122ff88ce18ebac3370b8815791202a76f0ee03ccc3abea5e64452. 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/USHM81198453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4415b1fc0b3340ed9aa4d966a5f09d44ba3168ef79151f38d7c520dfa88fbe9b. 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/USHM81198454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3f7d5bdaeb90e59c7af00010c7ca0fb89fd699e5879efcb7c8b7168b2c8dc9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM81198455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f51d7093110af81bf4603b08fd229d6e20c243ab2754b10095aefaccd6ba51. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM81198456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe126804129fee66beed441d59ead4ab3b91d0e7626e895ca013d3b1dce15cc6a. 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/USDY42454335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe594979ce1459520350b68883c2a9d13ff3fa39dc251b2ced014924eb6912b07. 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/USDY42454336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdd9139b2f5e83ab2be5d488d825e6f4f0f78161ca67c0baa46acbf9497a950. 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/USDY42454337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618e55ab343b115afc86c2578abcd76086ef1810aa3091b373ca8eb90faaee65. 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/USDY42454338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c63e65f065dd490d9fa1a1ded4aaf4324beba295dfd597510e1078856d439b. 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/USDY42454339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af0fbc842ce8baa83f6234c4c3b6e93ce514748b0e832a1703a1421c98e0066. 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/USDY42454340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f7f25cf3bfdf24a3c88237eb86130be972ed6314503570f05a19062750f130. 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/USCGJ2099293.
Mosquita Y Mari (Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67ee8fa0140d16dbf32f83fd40e80a37a983b32ac1085d5f2f0b0a11ec10029. 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/TCABI1221223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289db29aa57ec9f5b78e5a325728770825f768dbf73352b9e7f1e55ee3a7bbdd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCABI1221245.