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 0xffeb1b2953b800422a12cc9af4b68d2d8a9e84edb8be1d08861f18bd5ce336df. 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/677d998c-4ddc-4b35-86bd-a1df8879ac15.json and https://artists.proofprofile.net/proofs/artist/677d998c-4ddc-4b35-86bd-a1df8879ac15.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 0x1e190a4ac6aabaec46abadc8504c785ca967e8bf8361024aadb3c916e76736fa. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZNWQ2340681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6347ca2e915e5342c30270f77128db1c2c09a7d4dfbc4e27638c3227f58a7e06. 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/QZPLS2320157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ae5efd69f6015dd9f7f8a4a5969df7e1dba3d5b31e2e85364f1b02e2e6af3c. 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/QZPLS2320160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede6d3a3217f382760415a3c848b376663a13285a58730767476100cb0332471. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZPLS2320161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93af24524cb3251148864d4cd7c445b48a6099bd34f03560c9bdc2f00faeb5fd. 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/QZPLS2320163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0051106a5560515e441e3fac9507fec62553cdd17b96aa0cc955e116d2d06ae7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZPLS2320167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d9fbbf455b20dfe1ed269c5a62fa9f68c8cbdc7ebd13ac0bb384ec92c4018. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:53:34Z), 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/QZWFN2330731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6293f4a132bd82ed7076fd3efc5146b23a69a7d7983cc63f104edf5df67e4c8f. 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/QZWFN2330733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073f099446ddd7a4c67e2691cd9cee9041e25ddac3f6551e27875e9a0c4c33e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFN2330734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e23185809799fccbe97f592ef9d0817b3a5feb6b44fbfdd95bbcb5098771b0. 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/QZWFN2330735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771f5a8bf3169e1ecb79252af6549153bd587fed57d4fc6e51fd76a2f2fbacfe. 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/QZWFN2330736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e1417e9f0e04ef9e363a6c53db2b57587d185912a3a0cff98975ac68e2a7f7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFN2330738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8adf2f3456a399a870e9cd6bf43f0a99177960549a56fcee316224d4b4afbc. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZK6N2474400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9370a66906066ac6f7ca40999391404440483266a0370808cf219faa1f93c68. 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/QZK6N2474401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82095fbb40675b586d682961c6b5434604b2880eed038cc71fe401a50d238393. 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/QZK6N2474402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d5b7e9b6e75f8dd9845b4448c14ec00506a8cbaff632ea8747b31bc416227d. 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/QZK6N2474403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f6d639d30b0d7a54c153b3f548f0ea624621d5bed1eb81bfca3a5c40a03025. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:04:53Z), 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/QZK6N2474404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c12887efdbe0b09d6b9b3b6d414dd276513829d5c112a8e183d00b84e6c08f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6N2474405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff5275ff34704aba35b80833a76b7a88d6dfcfff8427069ca835ea822794a83. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6N2474406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeceb01aaa9b85fc6535c4205d38d59d4fe4fb969ef36d2d71941f626da0d0e0. 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/QZK6N2474407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b94304ffb7694cf176eaddbb7111f7e04aad0c03806886c509ceef1fe5c5c32. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZK6N2474410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e22bdfbe7a5c17d8aeeaa48ae688eb27960fb78f884a6d9133e221546ce47a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZTAY2465705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff2f15c09f6d0bfda1afba6ba636b26ece3e86e28620becacc1f1108145c5f4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZTAY2465706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ed1973366bbf48097b2858eed518b2434453c5ad7e796a9b4fff8209b2de44. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZTAY2465707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07394da63ec0b636b9965263787291a08b6d08fd4fdd202718be78f8769bf60d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:32Z), 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/QZTAY2465709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4cd0d653e2ce7f543ce588ee414068d3596f56ab015dc277fdc5ade030752b. 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/QZTAY2465710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8786f4f97bead474fcf773f79453837521916ad571ffe8bbaf5372708d583bf. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZTAY2465711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ba902fd4b0724602f8e297d67628fc3e23b73b72cc0973f34c93299fd33a96. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZTAY2465712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e4b4d31a588c6c30a811bb9ada4ee2203e600c173edf305bd7a4ec1b2a62ef. 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/QZTBE2475996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23184b09ba5c7315520881989dcf32bd5977c257cfad05232dfb535b6a5ee147. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZWFH2491295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4452917f78975ee8b5eb422ae6e9cffc183a2798157f8ec4b0052a86918b0c79. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:19:12Z), 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/QZFZ32565847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886331652a1482e22c5919ccb59f7978c19fbecfc00d673e13f9f5ac1ef65e5a. 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/QZFZ32565844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed46ddd257f61619508373f1bdde6a540b826ff63f014b5b87d97f07e14ba96. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFZ32565845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42083bba83583009530231fb6db4f94a09794760b5246e6020a00387d871360. 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/QZFZ32565846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4452917f78975ee8b5eb422ae6e9cffc183a2798157f8ec4b0052a86918b0c79. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZFZ32565847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89076a1bbd9b0369705774d1a3c3b3416d168fffc59d2dfa42a59abbdd5312a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:10:53Z), 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/QZFZ32565849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7753325632c7cb2f44852bd615c186b559ad8a6577bbcb86759c756b2e33145. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFZ32565850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493e8c1b0689494681946b547192b72c4e087523785913da89e1e20ba30bf426. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ32565852.