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 0x505db910c47275ce4b8e362c2e18d88fb1ba70eaa15eb599c24d3952d9b3226e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7ba50b8-667f-434f-bbec-66dc430a13f4.json and https://artists.proofprofile.net/proofs/artist/b7ba50b8-667f-434f-bbec-66dc430a13f4.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 0xa24fe759fe4b95b8c6824fc935ffeea0f3d92f0e6a740e4fc06982a4a4aa16a7. 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/QZTBA2518197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2281a190ddb38c2836d2dab3e50fa6fcc9ae48c4fa013447faf0ce408c78568. 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/QZWFE2519440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b77903011de8d0749034ad97076ea10c748c53ab05d7ea524581de46dfc239. 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/QZWFE2519442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0cfe6f039e4d0fef3c1928c7e66e475743b855e18b8be9a9de7d93f7610d0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:52Z), 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/QZZ7P2581684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cc0b56f217b86cdfa16cfe9add74c3450c992c79b3c31584ee03569c87e2c7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:59Z), 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/QZZ7Q2594294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6624461529beae8c91dc3e1ff6b41f555eb5418d831d50728d8a27cdbc91d065. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:47:08Z), 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/QZZ7Q2594295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2d2cb20922d76922af3a1b973aa36ec45cfe8017a6754a67b19ad7af5e5e97. 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/QZZ7Q2594296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593972b80a82a70aacac73e9e4d1f6c2b75b915618bc9cad36550e619909d0d3. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZZ7Q2594297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044dbda24e170f4ba0c873bc7422237a19b5b05e0aa045caa96162b9df100aa7. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZZ7Q2594298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4af457b0c1eb2887f36332d400fe6e0cbda08f6199488cdece00b7f2d9af437. 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/QT3EZ2506195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56ef23ccef593642239dc02888badf8732ddab8f9d720132227ef8b32a64f1b. 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/QT3EZ2506196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfa3dfe45fbe47134ef41e64fadf0cec62350f7bcba4ff91e98e63ef91daee7. 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/QT3EZ2506197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f0ce17f5aa0ce67338bc2764f8fa3660b4bba37f6f1daa7149db9eea6aa2a3. 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/QT3EZ2506198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcb1c47031912f06b6a5f7bfe4b2a2eb17695538680ee96349b87486e91990e. 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/QT3EZ2506199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28046aa3b0c423be3d288f76cc7ac2bb0f6d0e48a3af9ac9b06a11bc22b99633. 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/QT3EZ2506200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe404dfbd785b90b08d3a6d18b5acc13c2bcdb5c7b66dd665d8b53c29971e9997. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QT3EZ2506201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167eb40ee2dfa8ad15fe33e6f449c03e5f67e37efb8543317716d8e55fe17c17. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QT3EZ2506202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401b09752729f6e763a87116e2535c81d9b676ff27df26ce197255bb029b9cc6. 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/QT3F42580535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d6a545447459788e9e61217faadae56b6fec099c5c2ebbb49686278d97bc7a. 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/QT3F42580536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cddf4642194046025bdce8c908cf45c40d3d6cfa1deff91d98de5f19f7dbb93. 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/QT3F42580537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f438037de846556a88c61bdca0cba8397d42e8b7466d8568a1b77de17bd741. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QT3F42580538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29508d04f879470480d223edcd04dda78280a54c3a22e8734b46793dc9cd7929. 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/QT3F42580539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a960ef722b335116f72f2838a83378f5ddbc8919ea753bdf82f28691fabffb3. 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/QT3F42580540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dbea4f0750eada46f96dea8394714c6194bfe8c5b1173023defe420fafd0da. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:44:31Z), 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/QT3F42580541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb800f475e04f17eaa85a099936e299e302387d5271107635198b3c1ac7735189. 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/QT3F42580542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c2ed94bc2769a6585771352e0a6c6147c2df0012ae68c2fd3b31c57bed0029. 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/QT3F42580543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714fb0ec77c410f7ead3e0d3ca348b6fd345e1b245e073cf658f6408b100a4b6. 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/QT3F42580544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896557b18a6b4cd93e16f85e6437edfb587e3f244dff8329f26b80868ef84c99. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T11:05:13Z), 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/QT3F42580545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d873e44009ab978f954fe17d45acd3f025a17011c83d67c56d60394f61c5a. 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/QT6EE2565054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806ef96917b27452519cc1b720533336c4cbff6fcde7dd4e5d158cce662b08be. 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/QT6EE2565055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f1acd2d41bc989d1e0df2d7d1fc5771822d5cef1d4fe6f05d4d3b0e4754e3f. 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/QT6EE2565061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1775a3134f5fd61f117841d7d40a38e0b03323855be4e8eb86fd5d13652c895a. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:23:31Z), 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/QT6EE2565063.