1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0f7a43ad1dc7a7947585ddb487c0df0ed0c89fdf3b67f0ddb4b8e320a44cc49f. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5d1c54a-a2cd-43fb-9f60-9678485d85e5.json and https://artists.proofprofile.net/proofs/artist/c5d1c54a-a2cd-43fb-9f60-9678485d85e5.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 0x458a935880befbdd5e879636c49c14e2a97965e9855417463e8c67291ec3d76e. 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/TWC612214401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62110d47b5d0c738260b93c4ca9bbe921c2bd9c1568c21218d23a828b8fed51e. 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/TWC612214402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a5b36a6cf62f248de34b0ff964361a5c1ca2981acb67e76fcbaabc257b8593. 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/TWC612214403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e32abc60df7360ed8e599ed9b55ad7c4d7e3abcd2c819631c3278e1b4254d64. 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/TWC612214405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcf4c62ce6327b3a358e97363125353d8642808b8ca6f45fcf99f5bc9149b18. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWC612214406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0546a3170ce3b7637cdf88284c7d891c0c61aecda779e88fdf328e80fe156bd9. 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/TWC612214407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9844d0a261c347b94852c855262f47d7c30e0c086848687815ac4312bd65258. 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/TWC612214408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cf3004aabfc3c4624566dc3c905584dd1d8bdb4df034ae8709a50b1e1d0877. 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/TWC612214410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc83435378ca4fa3dbdc47a6383b92f8ed39fa7e81510b1c850446cfd3b8da. 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/TWC612214411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a431481c4b62f652e36187b636e473c318c3ba1a282ff4111794b3ee2103461. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWC612214412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf068bbde6dbe6dbedb961e27609ae12527ec977fc2fb0d1d3da228588babc00f. 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/TWC611209701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faa5fbf7990e6ee78704bfdbb7017b084bf89980a3b3977aa09a0b53bd46f06. 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/TWC611209704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835362f537ba8c164214180748ca11a61b102af22c16448844069c96a7423fc5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWC611209714.