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 0xbe5102f109cb4a20da606ff06ce215e86a1bf63b2cff1f0ea103f34a3664b398. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13b0bfe3-44e3-4b5f-b8d0-11a56192f5fd.json and https://artists.proofprofile.net/proofs/artist/13b0bfe3-44e3-4b5f-b8d0-11a56192f5fd.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 0xe94e566aa2bdce2e74caa2463842826844d99a35d43b2262ae4d77c17e408957. 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/QZES72396970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f79f6a8ed32eb5393f1cfdace33aaf4f606c511a1f2832243de02e70c689e9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZES72396971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40966628bcc1ef4136003713dedffaf250f69cb335e5e44ffbc9466cef466014. 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/QZES72396975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e26d5867e5fb7413a711eafad3900302b1f5d7f5527184181205625c8f10587. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN42368237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0631ea158199659d1a4f694ddcfbedf843371159d73d02a6a42fa8edbfefe475. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:51Z), 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/QZTB32302917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e407e3eda3d921c933c3fdd46ac9be165acc83568d9c2666a9e973982cc87ae. 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/QZNMV2312994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f2702fb442c36734f496f64de1f20f577dfeaad75f3da73ba7207d58279743. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:27:07Z), 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/QZWFM2315907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f790ba06f8cb8d7c8db2bab76ddf55b2ea21c2841bad8663a12c137a3d75421. 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/QZPEW2411507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4147cf70afdc85e5fc8a7b8662881c92186f6536f906906acd529945c8b93c2f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TLVEM2470522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd092208f42b83126f5ffec344397e7efe4972e63118e52b4274439055a2fd95. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TLVEM2470523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e9412b14547fa7f32069ebf34c6b8b36d7d44bc6aded43bb8664308cdd6f0d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TLVEM2466536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf312029c1bb2f2e6be318255fa53f6497ad3d11e90749fc10368482f2f92afb4. 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/TLVEM2470525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd766bbdc35dcba86335619bb6ed3c092cc8311fc5caa285bf57e173edba01ac0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TLVEM2466535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f4768009f0104174bf634fb62545bf9fbae25feff0344c52fd99e999404f89. 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/TLVEM2470527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735f85d31a0040052e6a7b3c858e7f2e9325fbd733eff3a96164f2def973358b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:24Z), 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/QZVEM1848885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6d7f6a7f63ba27ddf32fc39f1b3626f2cfbf4ec994e8ada954fb3cc95ea0fa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPEW2525167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fd49bbb5b8a8595cf967551111ba14aaaeb0065c9d858bc2354fb4e6ea83cd. 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/QZVEM2574876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b32141271451e118e69c3237b3dc59e7dc3f1f09825543a2ceb8e3106463be8. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QT4K32519738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd195084f860f49b0adfa429576ebcb0b18a0c8a58ed183d3858a30d8a778b12f. 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/QT4K32564146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe059b17b4000af366a7b051bfeeb56e76e2d989746ee40f6be36f3338e6ca57e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWT2244195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e4ff1f4ec45d9feaea8042b126590ea4cb7ecdb743d734569586fd58e03750. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:28Z), 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/QT2VB2449844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566808732454810e71932df23c91d7237db196b8190cc7e5864341043f6ce097. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT4K52564465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd30b814b1e8f68604eaca0c87335bce8fdca82e3b1d9a9f03949722916ca68e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT4K52564466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a375025328ea0381b582c29eecd25a07c8166263bfe1900a8ba0f291b8fbd5. 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/QT4K42578971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd08a2d580059379885b8ed7ab681fa6680df66c65ce7663d24e3fb7ff96ba6. 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/QT62U2514275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828d9dfddb609dd19f5235b7b13a90e33cd0e953b410b248f39a7930bed79ae. 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/QT62U2535280.