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 0x56029b78dce3c2c481a3603b500e209db3a820ee0e07b87eac095329acc056b3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e11390f9-ab9d-447e-a13b-804636c54a22.json and https://artists.proofprofile.net/proofs/artist/e11390f9-ab9d-447e-a13b-804636c54a22.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 0xcc859afccbe092509953dcf06ffd6dfc847e519ede8726b0bac84ed1d13f3cce. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRG939000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61623d7229e71cdd8f13ca6195527854eada1894cb0984c439c8fab0705b4084. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FRG939000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9169d382c28f01699ac308ee2741e3530bb730d90395543713ba5169a6ca3f35. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:35:28Z), 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/CA7LQ1300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9255f1f8d2b91d3232ccfdf8d922bf366fda0e86f6cd5be1a79a9bd14487a2b2. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CAD942400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e084ffcd0d49b03ce54356707f859b0666c1082722a73807fac1f60e72a32a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/CAD942400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b7b3aa057497695646fbe2e775ee3e18560982a684db903b0e71f8aeb83f3e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAD942400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd358da04c9c530613b8b3b76f826d2cf0cbb7e59f843d70452e9ad0ed6dea8ee. 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/CAD942400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9867e4fe7bfd7ab6b1de830544a0e0b2f1c52d5daf54044a866ba18aef3d4e65. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CAD942400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c852690f16f8966b9b605a66f46c6171cca229b165c0f60fc2e7b650f9afd6b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:08Z), 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/CAD942400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e63a2fe40ae63a391067cc3152b2e99add2611d6a6c5565cb958ad925069d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:43Z), 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/CAD942400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c6e757d85c08a7e58750feb979d823d2dd7cac6d5fdde347a33dbf0e545dff. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CAD942400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815b6a40fdd7d40e717081f92ea46e145a71e5e1c936ff9270579124318ac1cd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:43Z), 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/CAD942400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740c04c8fddca00962f41697b11bcd543765983568ec79564e7c8a0e7a1ffde3. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/CAD942400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32d83e831ef5076704256d07f8ae6c7bfa5788cb93a3ebc11bc391b8fa4a686. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:06:13Z), 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/CAD942400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725aca214efffaaf96d3ebc57e6040cc8f212ce28a619e0e889ba44a8f85df35. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAD942400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953f779913d921cf9871fe2b57b4cfda5e50f6dbc3582cfb9919bf3bf1f4d819. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CAD942400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb650c099e98b6846dd187728732ef1c81f0674c233838724711b03f50454e24. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAD942400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82145477852767daafcdeb427febaa48293725909dfc15fe6e2bced07c0c41e3. 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/CAD942400016.