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 0xd30a4f41847d675fdd03aef05c1c0efb6de9c4b0c466b67c732e251aab398953. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15264f76-2fd5-493c-88e0-af84fc96844d.json and https://artists.proofprofile.net/proofs/artist/15264f76-2fd5-493c-88e0-af84fc96844d.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 0xf6d358d0bbb1d42241635fcb751f73cfeeddad6b2fb24eb83b836bae43d18bd1. 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/TCAHC2311491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c757e681b5d5500c5ed1918398ff307e3893d4e67b7e1747b763ab90ea1676. 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/TCAGJ2273616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a8b4370fdc07bc1b1206a58540dfecfaedf6cf1fab94aeecf9838813992ffd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:01Z), 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/TCAHF2304199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c757e681b5d5500c5ed1918398ff307e3893d4e67b7e1747b763ab90ea1676. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAGJ2273616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db8312ac0f6cbca67aabe28d4149f28563016074701849976efa2bd68691d98. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAGJ2215849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cc5630250319b9f30ba2771614fde0d08d3992c48fcbf179c705850000712b. 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/GXHND2555751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d9b6391be444d46e26a40256bed3d5a37ac0e1dd27791411e739d2a7fd692a. 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/TCAHB2387557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4d2c2932d60c34d1d75ff6b64bb369248c8789a4bfd1ce8ca9955045db809d. 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/TCAHO2347068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197aea9c60bd6c56c87bdd388917c2c0982c082631d0e855a86c553bf37f4ea2. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCAIT2415659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b41221f77c451a9352419d79482168f9046ca796957f11123d47a1850bf8301. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAIU2415832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce069f175541de338be81d92d31f00ccb4229ca93cab6748dd61760deceb7e5c. 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/GXHND2558832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20daa4bfa4d2bd1cce31b9e0681ae2bf73e2f8c0751e06f80213392b1ba160b9. 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/TCAII2483553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5b4d001e05d8d7590e4d705bef0c72cfda9d8e27ab94457e87f96fdf683877. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAIK2480775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e3b2be3d90b6e4a23b583652647b05e58d0b5fd32449953b221c1f15839f96. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAIO2429172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b302428c348c8d0299d0f94031ab92358496d20236596feea68642be2731bec. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAIS2434484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3175c786dc99784f923d28cd11c0670a0dd138a5d43a31740393abffa27772. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:10:05Z), 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/GXHND2563700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6408b184ac0abfbd9f08deb2d0574992712596c1f4e1d355562a010f7c4de3. 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/TCAIS2475178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c7014aee3d83845d90d738415bb7f1e1cd880b8511cdd50c8136706577856. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAIV2411043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115d15b9c22c3e22ccf15a7bca25ff1e0c3bf47b39a511cd97fe63d621038561. 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/QZFZ72452147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cdd13bfedc0bdf4f4872b154a4a93d526e3c445631097ba4385ae4ad4fb132. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZHN52428368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117709f99249d4ccbcf3a56fcb5ef048087bea984c3f5800094dfd1e4a124291. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCAIW2449622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f70884b0609fb94d331598511bde72f82a6f35999a72f9ecef4ad2cdb83092b. 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/AUBEC2491478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32a1b7c35a32a818c20cd5e0831cd18cfe0cac0195ce5d1102d92fd4617c149. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:43Z), 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/TCAIZ2474726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830ca7d9a2fada86c01db3ddd83db865dfc4496ecfe9e727ab7b9ba4bc311ab7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:31:40Z), 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/AUBEC2364392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157fac64bd8f22cd79d7594eeff3cb7bc7ea0110885f527d7d7929666663c7fb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXHND2554072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e9a0d6f9233a1a2fb678e82d0416d6701ff25d51805643f934ea9fe9b7845a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:37:33Z), 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/AUBEC2505667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa359afc0e0c6ec1ce27106b94360d65c00a01686401f66afab857648d6a45229. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXH2J2512738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841dc126b219ea3e4ccf873a9ebd430fff1211cd74cf40ee0402f573b135b726. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GXHG92569196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8355a72a492e07c1e853111ca0e37d18358b07808408e4e58419f78721326e49. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GXHND2557279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc4ac607189ae60cecce76fb40129e26fd1b6d74a2f365bfdd94eaf7164ca3d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXHND2586748.