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 0x52db03726975967ffd2760e2aae3cdee86bf973e21d84c3733a5ac20ef539c53. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ca12477-d81b-4c59-a175-befe96caee09.json and https://artists.proofprofile.net/proofs/artist/6ca12477-d81b-4c59-a175-befe96caee09.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 0x26c81baa8ec9543480ab71701641e24224011d0443f312422c28ce325fc1aef2. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USHM91219330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b89bae1fae5cc36ae8c76920942aefab5101504fb8772c08e66b0c087c76731. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USHM91219339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74107c5d676a5536fd7b367306b9168141832629d36d3138666b53b2fcce1065. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USCGJ1398500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35826c63427cfb4c54d51a7f310cb8f1d08a5274516fad457d3db06fb224e2fc. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USCGH1419440.
Black Cherry Kool-Aid (prod. Sef One and Lou Koo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e58c2cd0967b5d825a7819240a2f297225337f356687b43df9c670f2046b33. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GB5P51500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b62faad43c17605c7bf5a4cdf58650ebed4278e3ffd523016513202739468ac. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM27T1650025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67715a312263cd6675526b7f6c36dd4e435423d6cba55e83268d46b965a93aab. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QM27T1650026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa8ed71dabdc0d5edea3898a0f81021458748d1b73b2c262034bf90b4424553. 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/QM27T1650029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a87183ec2cc39639d97c4dd29cbd095c6dace7d5022fffac004619d823917f. 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/QM27T1650031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7363c469abd1b538b43dafd3694d0eaad5a2f5c6ba40b99639b757f5aa6c9a5a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBNEQ0000435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988edb604b17962f838a19a81c1f5fb64d37e9bfa896c64b80cf4b29c1f693aa. 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/QM27T1750004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8b9f6d917a355da3584e0cf8ecdf3ba49d7c659d5ddce6ba757504983f3ff3. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:04:15Z), 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/QZAPG1718461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4632a58cfa5f324eb46804c0bed64b1da2528bd49c91857dc3aa122fb104e2. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZARB1818205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1490b6509c676dc61b2a71305315d591017bcf700643a73ee17e788018a4a63f. 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/QZARB1818207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb091418f8c861bf666a68f8f7064894ce4611ff8c8e9912134a00bd358737d13. 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/QZARB1818208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8624092a023b26e703ba89f676c959fb68f37a85f90b478b16321c449605dbe. 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/QZARB1818211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140bb77140ceb0e884f49cd25a3081ffa3263abf5e0b63bcfd2f1c7e596d83fb. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZARB1818212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264d43d3eb92ffd7b70caf6fc1a946c4dbd20fbeac8976bdcec46ec3b1548dd1. 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/QZARB1818213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c63d82508336c656118c395aad9dcdee52729801bfe6f1499e6e4c9240c0dc3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZK6N2160249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d7eccba01ad0a168b9f40659a4e8c950275ca22ccc5b49b8ff920b836d136b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMEQ2150172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb15c91f2b9b0a3bc7a3d68d9eef2f6859ea76c7a4e5719ad4e4373279f4f471. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:42:23Z), 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/QZMEQ2150173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0fc3147a0a49bb3e589d46c9dbe01f695325f725bb41e8e483ec62f7e0ccdc. 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/QZMEQ2150174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6423609859457757795d63872c6d71b1075117047a1f4faeb71e51b6fe544509. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMEQ2150175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b64923fa6acd4a0b8a965c895518fce17f1e1fbd18c7b1786a29c22d99f6b4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMEQ2150181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367b8f0b78d4488d5b00be0f99ce5be224ee4a4c921e01092e806165f261902f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZMEQ2150182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942508829766786262740d181f28ca8b0e7a2da666e535f1ece77a3e6ce0acf2. 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/QZNWW2285086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537c6f4e062656ba37db0f390a7cfbb68889bf05f5bb0f2ce31bf77446a2b01c. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZJG52351756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c1664b3197e4ae5ff31545ab8c360b43be275e110bd3ef592728eebe65a3f7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:03:47Z), 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/QZNMY2389496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b9978bcfa0910305ebd4a09371cf39c934b5f39c0b05af26f4f99eced74bd1. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNWU2424707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c9caf48882c4924a54ca37f521fcb1b472fd802e95e67e0d17f72e3c864ccd. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAJN2534828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4524e084186a384f3cc319484272be2d45dc829cbfb64015e97408b0b81bfb1. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/TCAJW2521797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ab491777f36adfdde84a3276c42c0c62885d672b34c9a4fc35f9b021d7260d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QT65Z2587624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cce003c487aeaa663172f3c9ca4b49d529ad3fc1fbfb52bcbb82303b55ff8c4. 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/UKW3Q2000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203191988719416c8a04ad192818bea8b8b6bb544085448c485de3bf59fd578c. 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/QZNJY2303761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c1aa22339d4f26db5b735aee5523d0be9393038d50cb086508e26258441b4d. 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/FRPHC1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32050cc1a9cddc768c196a36789c5daacee9e1543664e0b20cec508cdb331c72. 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/FRP7S1700160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24feabc5bbc0d057751e3a636850696031b86e4adadeb5f988e7038f6abdb7c0. 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/TCAGK2252840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942508829766786262740d181f28ca8b0e7a2da666e535f1ece77a3e6ce0acf2. 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/QZNWW2285086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa914980f00b558d2f2b925caf4b252432482380426c1df7636d89329533e6270. 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/QZTAX2437203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e05e9f123946fe4d2992b1841de4b6e776689055443199f44733b4c9f0ce12. 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/QZHN81942623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b1d8f7639b4d4e1a519bc294959814d4910e0cb09c6fcbf845c339f20a929a. 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/FR6V81578485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaad9f71da1e0fec7c53107210a0dbb33487bb92473b9a723066aeddc981af49. 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/QZNJY2392515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc58b4afa55b3c99b28fc8e600f57f17c7d38b4448c29f2397f3c3f329ead9. 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/QZMER2123580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356206a686bcb589bf7c6f9d8c24ec1f763708ebaa3882f7b76ca097e3caefd8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR9W11908448.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cfa346012ad14c03b1445c02edc75c69303cbcaa8154dad78ac2453978783b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USLD91730345.