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 0xd5245fe43e72ca46fe0064d8aad21c64ea9df5842dc46c3931f0cddb656e0fa6. 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/c47b2cc2-ade3-41c6-a649-99619dcec477.json and https://artists.proofprofile.net/proofs/artist/c47b2cc2-ade3-41c6-a649-99619dcec477.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 0xeac42b88fb5425a4b9f323bc08673662408e95bcf673f1be6036f476f58994b7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLE352000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdd4870da6fd86001b8c66e0855915dff3df8f5b6bae96f84054110b6113aba. 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/PLE352000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b04d4a495c9e5595f59c1d994bea6ebebcd58e033fcf34a8cbdcf925bdecb28. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLE352000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e78f43ad502c90ab05b8c3c4ebdacdf8414e679c360a1e40ebed25e3c4410ee. 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/PLE352000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999c60483593349b6272896ec4f45e6bc371870855f540ffd21be9bdea8ac7c9. 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/PLE352000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e2137f0fc0f8fec9351dfad6eec280d0b0677700334d1e84e79d36e6b21fdc. 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/PLE352000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52c8106ed9327053eb019ff4fc81450ed9f04194fa3074e00972047b9a72566. 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/PLE352000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8040c585453e5e74f9826817c560338374f3ef95cc9fa3f3fd9f4cac545d84. 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/PLE352000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd94715fb589f70d604aae2b0bad816ce2a2082467036e5c51bc92304463019. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLE352000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea56bfc87efcc68a2d42dc49b47b2f0f90ee69597604c56814744df835e6e276. 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/PLE352000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df2f0efcfb46dc9b8ebe13cd40162a21e6953779a5368b5872edecc68c86352. 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/GBKQU2220986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a2a710eef59303d323cb513b06ec035b33cfc62f1de0461843dec5c8c75034. 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/GBKQU2442265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacf5a471bf35a4d102db4623d92060aeeef2f81472313cd26ef222b8f14b611. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2442267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d9babedcaf39d5a08425b38431163a19a54559b74d0a9c72b822686fabe5ca. 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/GBKQU2442269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9953029b34f63c04e4c42d770d571b09f506ec1cb552989a26966e1e3796ce08. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE5Q52400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fee08ee201395ada1812cb9fbcb229d3fdbb34324b85704eea7895859e90ac. 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/SE5Q52400269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb739e0cb561b010fc2697bb60d91b864a5a6ea02f4f826a74653be6daf353dbc. 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/SE5Q52400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eadca2213661811f245b59d2bdfdcd13b1bf40ad2835994c22e35966ff8c31. 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/QZTAX2319192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9284144ed95c50f8aac4eb8b161dac3afee254e888480b9254a1c2937d635dc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLE352300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04e64bee3e5e6e5a87c9e2975770e5de918b24e8bd04dab8b9f7d035bde4d7f. 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/GB8KE2302687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b3eb11faa606c55e100d81c334f49e0a0762f058406cecc48f7b8aa552724a. 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/GB8KE2152855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944426d5bea24c09331de72692f7cd0b690fe3c51283a2ad9eccc3d8e2e81f96. 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/GB8KE2152856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b04d4a495c9e5595f59c1d994bea6ebebcd58e033fcf34a8cbdcf925bdecb28. 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/PLE352000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9837f74855c2bfdf04a5657b9d8be357e046ee87a532c07bd78bfca09d3c52. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB8KE1953799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd443871e1d9a4cd6bc80a9af6330084e4c0906981718ac6326319476f3565b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB8KE1953800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08db57b10c6339e68278edc6674901f9ac148411d8d9a2b9caa5f9ff051ca05b. 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/PLE352300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe6be47b6a8a4f67a4412a9a5262099a764eeeb91fddd3001fcea0f3b2112fe. 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/PLE352300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbddaf2576eaa9507eb10aa9d0ed309ffc54f8d23636f23a56ba149f35bda9bb. 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/PLE352300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9284144ed95c50f8aac4eb8b161dac3afee254e888480b9254a1c2937d635dc. 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/PLE352300016.