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 0xce2571b9d0c54ea8ec65b48c60e355432968571d678e265e1005b8b267db757b. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f83eca8f-11fe-45db-b7ce-2effe3b93115.json and https://artists.proofprofile.net/proofs/artist/f83eca8f-11fe-45db-b7ce-2effe3b93115.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 0x0e222b6940baee24096163fcc886b113ea2351c0cca3df57c82952bda89d6074. 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/USHM22148331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8ec4207c9c51b607ff092fd7d375142bc66aafcd44a80dbb520e44388f1c6e. 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/DEUJ62400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf483b2c2b59b37e4cf03ede137042c5ec93b042f025e0dd7812b52e35afbd10e. 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/DEUJ62400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3ec2ec20ec0334b7b7a4c9daad28f47e0658214fa54e242c3b0092d614cf67. 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/DEUJ62300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf52cea04ef19f2ed7a097c87c728f1c064d94b2702eb85094fae0626134933. 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/DEUJ62400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4632efe9fc877221a3989d548034de2473a6d14c4ff025b492b141f9244b770c. 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/USCGI2133324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecae878c7806d8b361ab991a2917a765c7e990450e30f72c4d822cb6efaca95. 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/USL4Q2251336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401bd494c39844c8da5179fd37bc26038566e409ee2597645ba2cf521c5b620. 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/DEUJ62400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95a5521064f80fbc3c2b33e94219c2ff1f34d894309b89471114a543d369651. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DELD72001803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675e33c4598df363a9feab572ac1ad4ec2132eb811fb7bcf0c88a27e0956ed19. 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/DELD72001804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf52cea04ef19f2ed7a097c87c728f1c064d94b2702eb85094fae0626134933. 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/DEUJ62400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3ec2ec20ec0334b7b7a4c9daad28f47e0658214fa54e242c3b0092d614cf67. 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/DEUJ62300310.