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 0xf5ee85905f3201e1463b11c213bb7da3c60d24eee8fe4c750db204e19ce73de6. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e77d1f07-78f3-4062-978e-7e74e34a1964.json and https://artists.proofprofile.net/proofs/artist/e77d1f07-78f3-4062-978e-7e74e34a1964.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 0x1d8f9cbfbdfe9b5c837c386c515f11f393f9bf6854d37e59aa6be56ec37a7c25. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMSL32200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43077ae5846b2a1ed7c528e1f3a5f8a1f703d74ff86d91a13753158880a8a00f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NLCK42235503.
We Will Go Further Than Ten Thousand Stars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f039ad1172ab159faf147e8cf678c1e16cf5a3f919ed49b4d8062791443427f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLTH62500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94095db4e84dae8d7185c3ade3c515b63fd23092da275cdfa9ead7afc520d1e7. 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/NLTH62500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03853f2bc6b17634769dcf6b89dcc5f1fac295c56bf108415de78d81a780556e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLTH62500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3db0787e9df22749030bf7f366966f5bd4dc0ca435073b55eca6296b1f6c1c5. 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/DEG932403552.
REBUILD - Earthquake Fundraiser Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d30d5ff98aeedd2e6ed847c65492ea8decfe96c42a111720836d521571ddcc. 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/DEG932400611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf58cd7b515eecfa3d13f12532210a9bc62d89f895c4d7927b13a6d3998b31c. 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/NLCK42504633.