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 0xcfe34ddf6d7def4187df9c406b7999e24e1b6591dd65db20e79e02116e88107b. 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/ff207e39-58e3-45dc-b067-97c6c75b5dcd.json and https://artists.proofprofile.net/proofs/artist/ff207e39-58e3-45dc-b067-97c6c75b5dcd.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 0xb362ac1ca995733a498cc516f4ef9b1130e1418dde98a983f250b8192d2ada12. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:34:37Z), 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/QZES82026914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb362ac1ca995733a498cc516f4ef9b1130e1418dde98a983f250b8192d2ada12. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZES82026914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42192f3a31f1c98aca34b75a7bb5e05d95a2d050886898dd1fa6be72aea76830. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMEM2086456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42192f3a31f1c98aca34b75a7bb5e05d95a2d050886898dd1fa6be72aea76830. 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/QZMEM2086456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3747fecbe69e38c0830bf1418ab4b2c8706c1f2275469e573a1f697caac4ea. 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/QZFZ62140681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb03ecf4220da061e718776bccb571422134529ebd266b824d399de36240282. 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/QZFZ62140685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb03ecf4220da061e718776bccb571422134529ebd266b824d399de36240282. 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/QZFZ62140685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeabe2331953f8015ac54df56607d71dedb8bb92ca3c02c813f190c9bdb87da. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAU2170695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e861bbcd30e4fa7dde189107a271095ccb3e8334220d034d517fad5f0ceaf5b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:34:04Z), 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/QZTAU2170725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884cbee125f9e2fe635583aadf78e9821eb970572bd4ca3833589b1f7632e938. 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/QZMER2285382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7de410e964fc1438a32e4ff028e0d13c0f0d6a2644e8b03eb199e3654c7c42e. 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/QZMER2285383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dba08492bb85fa87cbd1592fdb18355d1dde0264396d80fca43a64c827a613. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:41:06Z), 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/QZHNC2389552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da8833237f77a48d1530d87e7d6a69057b315b08f07b1292a5795b4dac74a26. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZK6L2375699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88efd4cc9867fe64f6c6b5644d8c69db2cf1ddf8369026fdbd1b4f51944fba4. 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/QZTAY2333520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf27cd456c16875d5ee6ff1f5076f36e8827c9bbd8121e46511518b40b1a6766. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZTAY2333514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9000a50d2b0c5b774caf05b4b1f20ac1935c0937ed7a34c41062667f1959af. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:12Z), 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/QZTAY2333516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aeb9ab52dffb8949ee1a29e1603fc08bdd8c46ed10c01ea3dd77d4ae8958b1. 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/QZTAY2333517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7277acb528579aa06082a1abcfe0fe476958d7f6e3ba00f08ed1d9715022d7. 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/QZTAY2333518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1900bb12f947398c25a70c6a12a943acfcff0a57f46de6e1c2a7b92e54f79c. 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/QZTAY2333519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29ef5ac5190edd9919cf9b27a1c278b80b7527d44d8b74302ed34106650da81. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:40Z), 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/QZTAY2333522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c12defc3e83c61a90b466382d65cbfdc0843d36bb2a18d93c8de61b845b010. 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/QZHNA2491473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe563cf96d098aec99c1b10702df4c815b6de083ca60b58e8d0c7790aea25e6c9. 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/QZHNA2491474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656ba82faa72e30963fac4e8233166346f4c9c8837a36c8790e9c0024ff00cb7. 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/QZHNA2491476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343bd94a910cc4828e28087609b4a03c51fe9693ccaed3981333e07717045ba4. 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/QZHNA2491480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90165095b271dd93341c960cbf93677b7bc0d5fc4dea5fcfc59f84f4a7cc244. 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/QZMEQ2416187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8373bf77eefd5b60e47f2b2f9aee7cb96d5883da57ed57d96345e2000861a7. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZMEQ2416188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67c4e7659f07d087624404e65b78b6e4e8d32f1e407e5625bb0ad41e59cf960. 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/QZMEQ2416190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34810e635f59f51e6e90cad70cfb9da431b56c9fce62f5bf11b1c7f6bed118e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:40:33Z), 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/QZMEQ2416186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8122249fc80cfa790f8920d64d8de2b913e86400448c6653172597614a356b31. 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/QZMEQ2416192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05273c807ecf81878660d4d700fc085c2f9025d7a56f5d86bb4f362287f954d. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZTAZ2436070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f500791ea94319661a58b4d281adb82d7cc84c5ce23887eef4b295a20387bdd. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZZ7N2482550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19b51308cf15d45a17eca4852d8ea07447a8738b8b7ff1835595564b33865d. 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/QZZ7N2482551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbb02c1cda35914055f3ae439126652bb3f4715d5a9057d6b5eb213dd710090. 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/QZZ7N2482553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bcc2891720ae0c19d20039e37b8edf9b41032b9810f553ad157d3cc82d587e. 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/QZZ7N2482554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1f0cca9cf7d9175e82757c035f88d60e85f0e0f146283b87cc0db063de60c8. 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/QZZ7N2482555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ee2e98a6663d2be7947ddcc8c3665b47187a5fc035e432872159ecf3b6ef8a. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZHN92523788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f1b9f9eab465b8b72ba63d73db5f9a287cf974e1411cf7dcb9720dea99b86e. 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/QZHN92523789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c6691e2de23f64fda1596ef58a3bbb0bc91ba86e2e79f26b0a81fad4d9d0d0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN92523790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5521ee0c464a4cd9098686975c1833aacef75547392ad54c70aab2c11265f519. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:47:57Z), 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/QZHN92523791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a220c0059a0c372f98a1dfc6881151d54ae660dfa2092613db3207a799ce1e8. 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/QT4K52566763.