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 0x372fcb79fd97be82248119efee93ffab8601d2282bb92dff824b712ccca54247. Chain 2 (Bitcoin): anchored in block 954050 (2026-06-17T05:14:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42ff6328-e8b0-4449-9172-bb19865075c3.json and https://artists.proofprofile.net/proofs/artist/42ff6328-e8b0-4449-9172-bb19865075c3.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 → 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 0x9658ec522fa959683f60071515dea59f08ca8e3158c28fe37d8eba3893e3606b. 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/USACX1301879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8dba16ee101549da089d963a6c0d1dc0d3f22a10c9bf0920f9833bb941c5fb. 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/USACX1301886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bbe5fd898ee9c2f302e65fa7916e7abe4a68dc9fe6e34d731d5a71bdfa8778. 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/USACX1301865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41caecf5387c29c0e619d7d8cf0b554fbc92e4fa65cdbbf9edf1a940a3406227. 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/USACX1301866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa34415ef1ab1ebb495b5462798c86381733552dbf52c19884988a2a7866ce1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USACX1301867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33824bdfe8149c3dc54b2ef8ad194109f66326940bb4243cfce4d3b5c91e61eb. 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/USACX1301869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b1f3fdc25a93c6fb060ef4ba4c175e695c3d9894c05bc02062e93d0dda4392. 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/USACX1301873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd9562a00d91a5c407112a18ea05cfa1dd26fc1f6aeee4570e76be218873eec. 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/USACX1301852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebbe5520f991a9620fc77ae9f745726da95869628c293eef0daa07266e0a753. 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/USACX1301854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a29246b8e7455b04f9d45b9bfed16974294b57bee993e20edd98b8d00fb531e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USACX2200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecec8987458c0f4f37445cf6cd115bc66e3206b4853a631530dad1458f6ca95. 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/QZ8LD1970008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb66e5b712a2a31edf6a7ec1f7693d7bba4d4b0b48f17c99d190bb9834dec48. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZ8LD1970010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a93f7279fdb561c703d87aa0e398b7605437a3b83278e6896e0ad753a123391. 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/QZ8LD1970012.