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 0xb9e1d0c4765b6d6bd987a38cbc7ff782475ce2ceaebf5e389e5684caf8696c61. 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/c1bde35b-5612-4d21-99e1-2cb65a6c269a.json and https://artists.proofprofile.net/proofs/artist/c1bde35b-5612-4d21-99e1-2cb65a6c269a.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 0xc9be4a0d9504526d0e34fabd83c61db7a8c1383dc99ee42047f703cb2a7e0b94. 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/QT3F42459979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6074b0f779715a4aaae1ad95b3b620fc2ec4f586b3e0744caa71064ded5d23de. 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/QT3F42459980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ad8a326e88f3a297c0ee7c29aedf316d8f581b33dbcbda291e8586dffa2aea. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:42:50Z), 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/QT3F42459981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6905c5ce56963873487aed061b0fd74d5b516ef3dc929f14337b616f845a25f5. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QT3F42459983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901dfc0a8fc634bdd00c879857afd4c60ebb847d99da31aeef47306be983d08e. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:39Z), 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/QT3EY2442132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133ef06d548874a1ae6d14a7ea5fe139fd92e2bbd5f3e297ec21f2909e2044d6. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:36Z), 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/QT3F42459984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384474bcd0770b8dd53a996e7246e10e7c2f405a822387fbfd1acc3069074246. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZFYY2595240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468ff590710bbf48eb0c8431169a9bf5c45ddd7c2861b965b7f8cb6dd8be7cca. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFZ42564994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0e24df109cb2a87fd1abd46b449d70d93d5fb2e681227879922b745183e508. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZFZ72505909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf78a16c1d13410f73e580acddbca6810b87efaf697367f9bc3860307ecd9d0d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:07:45Z), 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/QZHN92524712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277e5090e7207f50dae9edd4ec9002eb9bddafbb1ff319151f8ccb85b2a1996a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZHNC2505937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65431d3fc79816748b0048698cdb10489663f3d6080c30acf22010be3a3142f3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:44:11Z), 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/QZNWX2583501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a14f49db449734592ae709df70039a26e233283c9b9667fa323e1193dcc7e6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTAW2579928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6133e7a4a8d1766d22ff5c062ce13cd163ff938f805bbb13565ad8f7efff93af. 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/QZHN92526974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c48e58f893634f1052e011ac4fd0494c0c0567e33dd9a69eb2a3e52ad3f84a6. 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/QZTAY2595389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98cecce8e45088628dbbcf9fa49a6bcc0b10dbfff5674398a296d2cbebb1846. 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/QZTAY2595390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8193ecf51d50ef5bda4a9eb6ee3e79712163f664b6587646245dc5d29ab3f68a. 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/QZTAY2595391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65431d3fc79816748b0048698cdb10489663f3d6080c30acf22010be3a3142f3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNWX2583501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a119d163020a113fdbec383eea0c109f1c486d7f2c768623cb636b92c75cdf. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZPLS2567678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598675e75d7f6cebdea5109aceb528abb0acb56f3a6a9f92618d05a4d63a6428. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTAY2595392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1cf669746d10a8aceb7364b8b6306b50c52ff94099fbfe5ba75a0c4b001ee6. 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/QZRP52547356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47d2dbe946fb90f98b55eba1465975360426ec3a09e08bd89078fb36a8b3c13. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:11:38Z), 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/QZTAY2595393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646acd4225777231a50fa0dcb78f3be26bb429fe48bbbf9ac3df1dd7a781fd06. 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/QZZ7N2592772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed6da8a983816fac9309d3f154f248c932fd0d9da34af5c21e7b99e55186b74. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7S2513714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7770cca4a93ecfd76652586e0c692f1137c00c7bd2bc41dc6783e171b8d674d2. 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/QT3F92511161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fd41b353591165561361893dafef76efbef0d253b82418ace52880711f6b63. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QT3FB2524216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cd34f5249a9f7e93ba9bd5bbe15ad0aed986917765e4968ded569eda0ce47d. 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/QT3FF2520797.