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 0xc3d57d053d7f646e8a87b08f3cb954f0bea420810ac37eaba718ea692fa7966c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc0a0a11-10ed-4e6a-9531-a0acbecc6dbb.json and https://artists.proofprofile.net/proofs/artist/cc0a0a11-10ed-4e6a-9531-a0acbecc6dbb.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 0x569bc9d3e8b71540a1213a08db76754c7e2a0eeccf4d2bf8ea3a2daf9c6f423f. 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/TCAEO1993084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed85fa9df9a1b51b90b9629f21828f1ed6e4e218539a6ea22da36ec90d054b7a. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/TCAEO1993177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aefd2061579c678db0288c9e1ddd4094d99000901eb62ce3c7db3792fcc93a7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEO1993233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e7986f689c309c0654155f5d291715c4c72201751a9bc3fad85be376e38df0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAEX2034376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381ef55aa4ce775a3303bd86098cbcdc6af67ae9bc391e79fef9f448f613d710. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:22:50Z), 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/TCAEX2034524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee74554b78885539d1c4d520e1d4a883feb2469e275b97c7ecaf9963d513fbf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:53:39Z), 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/TCAEX2034462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7815abede17802bb7a79475e00f0d939f0c6a46523e2e8bdd94899be48b2af6. 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/TCAEX2034518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fc6dfa7edfde5911afdb13b6c21e77cb45ff8ac36eaf974ad723001fb0b322. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEX2034528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5645b46a83d0ce18165a948e1273033d608061077e636eb5beac670193de6013. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCAEX2034513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23fb310ab343cd6350f0ff14a101c4dec203ad3c352e38f55cf9a27b9d12908. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:40:05Z), 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/TCAEX2034386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5c642b1d8d4930f215444b464f69bd789b5afa722bd21b631b75da0e193b6c. 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/TCAEX2034398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda99abe2c47b4f007feda60dec0d18cb2ac5cbfd1b69c9c3707ba8a1a2633444. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAEX2034542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc468d989b15abdc1818efddcb7e6c91dffa6725b51852a007a5ffe7c129ebf03. 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/TCAEX2034436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e091939ce4ea973625c0d401692063ee09d629d860a7a3b4d35e78f8c97fe4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:31:47Z), 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/TCAFH2029278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae893af2fa2411424c6e903ed5c88e44ae6fb8da5acdb21acdefbfc763a9fa36. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/TCAFH2029295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29914fd2e421df88287c1c8a2c1a08ec5e9f980de221174812d5074addc724d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFI2178130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33374dca35d318db69629b2a212acbea8eae3c4a62e8aa557fb8f86d36c4183f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAFP2147664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127b719fd7183d89d9440ab87c9f8ac0e2400e0eb9d1342400d40beba93c2960. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCAFR2135293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d83842fa42afba1ed3b61d24e21e9fc0959ca64c6ecfb5202ea46ef53a2f49. 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/TCAHJ2354976.