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 0x8a41332a2af6c8464b69073a1ad1686b104fe87c60db4b5bdd1a2a53337d7f67. 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/1ca3687b-e47d-4a3d-b6a0-4cbe8181eeb5.json and https://artists.proofprofile.net/proofs/artist/1ca3687b-e47d-4a3d-b6a0-4cbe8181eeb5.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 0x56d9d26446583ff4f00b9495a7fae1ad6920cf452742d8e7571f7ad15dc3b15b. 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/QZZ762474504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f65573068caac3bcbd1a260e552638dba8f4b65f6cc551ab8d1ccf316066b7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:19Z), 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/QZZ762474505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c5a3b0129ac5553cd0642e01f17c1301a1b2ecd6e32a64d14ea6e58a65e6b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZZ762474507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334f885271c28fce7e6f52627811dd08d2af701f0558b8595e8393604de3ece7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:45:25Z), 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/QZZ762474509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9db17933c43fd11b94c6e9c78881d491cdea67833b368150ffcca8364ff1909. 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/QZZ762474510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1717fc866b1867a7372c1738799ec2d971570a742990d9fb3f74fc7c2c039214. 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/QZZ762474511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20d4847de898e8b88f8d157deadd761b3ee953393aa84e2b72b57b3e0a93ce1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:10Z), 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/QZZ762474512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8102b3758901c6298b53cc2c8362e115a2074ca577cfffd7603c635e0d62988. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:34:53Z), 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/QZZ762474513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42ebddf8c1f31e6d658ae6868753b1b1140a5baa981eb3fb5ac6323530b9749. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZZ762474514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4acbb079e519cb983defde584646a23ef6c4e06816f437e94af93ebd48db7a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ762474515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368022559fbf1904f99c816a071db1aa58654a63e78adeb421e91629f3e2bf25. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:55:58Z), 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/QZZ762474517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ced3dc6a92fba5aea58bc8ad230a14ffac549723e903d79110bea2974932aa. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:14:20Z), 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/QZZ762474519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1abc78ab56f43bafd46505ff4ed7b4732d9f556ff79dbff4b85bccf81f5f482. 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/QZFYX2598807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd5f61205e072f19c7ae8147200b9ae520e02dd7a81e5630be3458f88b55082. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:32Z), 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/QZFYX2598808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abdb1d4a86be38e751a30c03cc6f1251b8b1d60b782d485eb9e265957dac1a5. 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/QZFYX2598810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc751d0670b1b0b29b9eab57c58e890078146ba66f3c766e7ba81fe9af26b1bc9. 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/QZFYX2598812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61880c7395669c1693e56adec1468fac62ce2068297ee83a50bd05477dafbf25. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:06:23Z), 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/QZFYX2598815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f1c816bd9d13cc66d83e6b3115205f3c6cc13396402a3599a14abc2074b83e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZFYX2598816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882844b3554225095f24a50093b2ae9d474e191e0062b469f6efb335fb36c29c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZFYX2598817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc206d2b3941164a2c2520a68c84ac1de897b0876f52b8d692d5f6cf52e07e4ef. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFYX2598818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3044b0765fab1f5d766093dfdce6dffba913c3afc094cab92bd458354bb91e6b. 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/QZES62519951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee66193bfa9cce3eafa08ad621107648772d0145cef0f74c56138d9e61fe05. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZES62519952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70842989738280f90b55879c79977c5c055d5976710acc9885425b26566d2d88. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZES62519953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f00146d42ef056e46e1e7a65890b7ea30568c81c190b4cd666a3c87e97c7b1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZES62519954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53530e290ff2ce34b55fc455e71f81328eb58b3d3dfbec7b9b3d3d825e99eb61. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:54Z), 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/QZES62519955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359e51c18d5b1d3b1dcb2dd45927c1545c5f871df0377131ed20b0df7179bafe. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:56Z), 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/QZES62519956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0f564cad9d71e268ad6ce070240e1551da05e13b775d0b647187b9493af877. 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/QZES62519957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73047e6fcab3b780721ca673d1b1042d76930c39c91215435c54c8e18e11b521. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZES62519958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc63407d402ae2a6741b8d42733a960f94750f89f39cb3d353ae2009030c0d4. 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/QZHN82514327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07adf746a12ff5f55776394b42465915969e9cac5f2ad870f26a935efc0da13e. 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/QZHN82514328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d647b820c4c27eccdeab2cd7887fb62e20e3a874f01786c26a5968e0f528f85. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:33:51Z), 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/QZHN82514331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0036edfa344d4348b28072909a840850d9a65e9ec0e472d2eed2a59044f0b2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHN82514333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41effdf62c5b7d00bc66c5890b1f029d63a4accc5557af2ace0dc0dc90f8ffd2. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:30:23Z), 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/QZHN82514334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d801d58aa3fbbc4b08e6cdbb3883ce7ae69ea59ffe9d7532c9675d1394794d. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZHN82514340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223495bfbe5c3f27c7c9d03a7c32c4a1084ac941dcf74dd7477b25770027e121. 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/QZHN82514342.
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