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 0x159f09489985315de685b68a86d7f89d66cb05107875cdd4396a1ba0a7fc3cfc. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ebe924a-5932-4fb3-ae21-0995e2610cfd.json and https://artists.proofprofile.net/proofs/artist/6ebe924a-5932-4fb3-ae21-0995e2610cfd.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb614364bf569d007ef1e22fab6e71e767793dbaa0c4ef4c8183d6f19073f057a. 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/FR33T2054901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587550dcd6f26b4ed2e31e05affa8114a742f20aaa36569a833acc08647de08a. 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/FR33T2054902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8745dd051380fda6d1d56cf1ea1654bf2fda28b7edb9ee2b06edb45a8245a92. 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/FR33T2054903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919adbb7c4aa575576c52cf0d7d4d353e9e6435c9bb43bfe664caa8e2f0e856e. 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/FR33T2054904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f99f8458a2fad9b41e80c2e3ea69cc3835a1a7fde831dc64a8c8fc4175a8ba. 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/FR33T2054905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3ad2d70712b9f640f8ba9750bd0547bb43f706339ce694dd0f737d015b700c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:35:10Z), 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/FR33T2054906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1698d052fd34e18e7825c8a042fd405ce9295c1c669323108f2dd260c8654ef. 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/FR33T2054907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed32d142a06fdab8681559d5337bb42d1d6747f771b72cc3e1477bf4b55f9ffa. 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/FR9W11611582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab31cd48519c538018389bba936fa9f644cb8ff2df5cd9e9a7402affae424bd6. 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/FR9W11524996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d30cfcbb9d559e87f4c210e3508245aaa45ce680c3174aa42942dce96ed4898. 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/FR9W11524997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f138737642c3ee3bafd368486c10084381835614940a4a47b81ccad11049f7f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FR9W11524999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2891cc8d5fb54a4c92ac000e5abc66f0bdf38625dfb0c6f8fc627659fe5221de. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:59:17Z), 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/FR9W11524998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc667fefce79cb3538574d498da4966d33a38d870ecfe12afe8980bd87852bf1e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FR9W11525001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb677a07e003e820ad267174104870a2328fd00566177d59892d57baf7b819a16. 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/FR9W11215230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e82a2055aa613be82be84ec960033b7dd9b23096a7b5d5ed3cced5f7ef53300. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/FR9W11215233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9534a1aa47a840480259d2dfb031eb6d82e2ed0572531967d38d92082ca7b7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:07:16Z), 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/FR9W11215229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a47c78d62707d5d38ba91b3a79c72d2fc599d895331c0fd699b603706aa022a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR9W11215231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8745dd051380fda6d1d56cf1ea1654bf2fda28b7edb9ee2b06edb45a8245a92. 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/FR33T2054903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587550dcd6f26b4ed2e31e05affa8114a742f20aaa36569a833acc08647de08a. 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/FR33T2054902.