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 0x72c5a8d4c7895cb8404c3e63716ae5732697a3f05988b031de20cbb515c5398d. 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/5a454cbf-8488-48a1-868e-3ace839e478e.json and https://artists.proofprofile.net/proofs/artist/5a454cbf-8488-48a1-868e-3ace839e478e.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 0x6ab8056d863ea41465b091658655ce13ee8d1d1f78e170df14a9ed6a154218a6. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/ZA56E1402341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e3ea57a7f26b8fef5eb94d28c24e96649b479b16cc22ce94afeb57aebd04bd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:15:33Z), 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/ZA56E1402342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd1d5652cae957cb310d325c318545e5e15aed3a4cefd79eaef645674f1e63b. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/ZA56E1402343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284b4b73e7fb1170646706d7ca30f0b9faf5a26e80be502742bba72da6e142fd. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ZA56E1402344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5616ae250a5ad2a16efef6f14a76d3c481d24e266fe342d86ec40e058dcb08fc. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/ZA56E1403189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36552cdb1d60c0b19d83e114f318c79514d2ae2dc088a6a30b4bca5a49b633f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ZA56E1403194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a26a9a4c85c15288b85bbca34b43230123a5a157837ee138a59aae16833b9e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ZA56E1403199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e00c34303bd29f1a7da8879740a8e99483fdd8dd1b4b0a1a44b1a16175879e6. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ZAC031100565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219e36c1cf76fe29d6fcac5f197bb26fa438a53ffe1b13d6196c21f52b641142. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAC031100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6def5fa5ae279ca7a1c6a726693826ecbed9d4a1a31594f7957dafbfa921be. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/USA2P1355416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122ce1c9a28ae12119dbfc99e000b875f48834b19e0bbed1ac5a0b7d70562cad. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USA2P1355419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a7e981a3cdee85e7a900a5331879a4303939ca2511889000ca71123334af9f. 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/USA2P1499719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48416a1ce1407708dc1b0ae42e622fc72bc3fb437006696690d9ac8264f4632f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ZAC031500142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b3a65f5143a911cdcd628c105ddfca6ac869557b48acf43f2737f7024a940a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ZAQ651905948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f4b021244b8643c208074a71ffa2889eb400fe463483f1955a8f50f60d30b1. 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/ZAQ651905949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26d2ebb4eea9b71273a450ce0342bdff8553de520ecddc9ffa7d6a859dd8a56. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZAQ651905951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d22b2a8dc400308dec3cb9bf1c45670ac036e41d29d99ecfcfe1aa4256c7915. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:41Z), 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/ZAQ651905952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eab7622b0ac1639f8f82dafd7230615d0ea366c24bf17d469821971c36a0ba. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:56:20Z), 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/ZAUMN2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783cf868de48c5dd4343b06c555a26ee2a7e93cbbc9a8f5a0ae3182d01964c87. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/ZAUMN2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a0e0b56b4f904d4f5797ff3fa7ba07d7cd175fda2aed3693201fe3c0d24d27. 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/ZAUMN2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc37c72c6c8aef91caf9c6574114fade3d0bf9fa468c17bbcd3e8831038f59d7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZAUMN2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9cb098eeb1ca24f23075555f597f5221ecc96c71c0b4c5777b423215f3b80b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ZAUMN2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b9d3620ebad955b90966277280b07181a5267eab8749201174582b79a17145. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAC032500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44f6ab0404c7c5171de0fb979f78a123f54657a7a81cf8cfdef7bdc864776e3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ZAC032500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38708a45978049030c946a0c5ac14c7a26e108453a5f9c9026ec01820ded0e9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:48:42Z), 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/ZAC032500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231bbdec752edc5207859910fac4de37096e49eed0be3d26094a04cef5629355. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:48:26Z), 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/ZAC032500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497704713bfeefd1be6bf63c36de0b4cb41a48e6647d49a47e5d72ad02c1792b. 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/ZAC032500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869cb11c3814ebe91f65e6030c615981051940218adbe77d0299e3fa2034aafc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ZAC032500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2ac3e300d4f89e428e837d8f645cf86b17ce6946b9440016be861f5eb7c2b3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:07:58Z), 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/ZAC032500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846783064500a834211fbaa232de99746e6487bd24148488a8b783adb8c15e38. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:14Z), 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/ZAC032500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e3a41203561f3eab140b3a5d3ec9e98817cb9bc93ee14892653685a23e0b5d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:10Z), 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/ZAC032500052.