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 0x67b94ccc195c9d89e5f11570e984eb8ef603120b1031cf06fa18b162ce58861f. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/077404af-9539-491c-824f-5290c63c2ae5.json and https://artists.proofprofile.net/proofs/artist/077404af-9539-491c-824f-5290c63c2ae5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x32ba953cf7026057f7c71680f5b841e4e192f7aa02d29b4ab23c57db980e8c85. 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/BX7O92300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e3ee4a101cef5011e4b622e11843356e8bfcb9768ccaeaca8fb1afc51aa699. 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/BKJSH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94691e9f77bea9fda4231716f230e74a32b21fcece6c788550053f89bb1cced6. 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/BKJSH2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5eb74a70eacd9a3ac3fd86dd7daf60816ee55b589dbb5459f66fc87d7d2c92. 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/BKJSH2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbde95c3f815d5341c79da60b2d36c8ae79c95883fd28d156102211c7b86a8f2. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/BKJSH2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5da049e3d9ee11385b3893d28c3fcb63783294e005e679b37f34a1f6125aa8. 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/BKJSH2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42865d92e061ee51903ccadc28c0fe77f79d6c8a25929bc78af0f5f40390c599. 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/BKJSH2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62052fe2b061fcd73a4bb15cf6fdd3497f4e8a54ad290f55589bad87aace9969. 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/BKJSH2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c5cd804f24cf293b2de2582d2beef72c5e2b6225328912cf638506d3d774bf. 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/BKJSH2200009.