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 0x0d3b046d3a96625d423ac18063ec6d4d051584b35f549626ce5dad19ea33341b. 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/cd374b09-46c2-4d3a-89a1-387d15a9d0a4.json and https://artists.proofprofile.net/proofs/artist/cd374b09-46c2-4d3a-89a1-387d15a9d0a4.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 0x124d58750cde9751015d3e898205978ae95af9e8bbdfffafb38a7943c2810914. 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/QMPKX1782819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdf4f4f151ea9eff915f9736c6ee5c0a80376c6e6e7233f14d6a7c6db91f002. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:25:58Z), 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/QMPKX1782822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a91ed85545caa30af55047e51cb2fa988a0742ad65a106cd961b7fac98acf2. 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/QMPKX1782823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be1f0f5511e8f51574fa261c7cb80253dc67f6ed1fa7f36a0c9d185e46a5ed3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QM2PV1706473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8058a8e1e8ffd5666b78c41dac2ac84f6b38fd7fb707d5c885d5d44de47f369c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/UST8K1765892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62c684a5d06b4afa98b356f6a39c46f31d7492573bd058be763ec8df7f17e72. 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/UST8K1765885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6681fc74e94f17362693a583213278be93a49db9b4b4b24cdc8dca51996ea850. 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/UST8K1765886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa48b690d2a23120048b75e24f336432ad068df54d400491e0721cfc96b2f3f. 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/UST8K1765887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a5207e921573588ee9f171cf73aa4a3800d5d33aa6dccdca1b77358f7d9aa1. 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/UST8K1765888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fc3987e7d58e3f90ec82ffc80aa444be96ede7c6a42085a358991c101f88af. 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/UST8K1765889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe386e39779586c811446f62e94e5ff97dcd68cf69deac01f34d675049274cfbe. 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/UST8K1765895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403224916d557ed61de1b3069a976945e7b493f493e80923836c8c55c4855c14. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/UST8K1765896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1114fa048c5f1a70411c5683e58e52b37bc732b1e11eab4711752be9a551330. 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/QZAPG1719227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cf3ab19e01c8eba747d60a2d490dc7b5588940e726deab089281b482a0ea9c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:25:53Z), 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/QZAPG1719228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2b1fd9f46f90fb5d156364bb6fbb35a4d42f65cd00035fd446c14d102f5897. 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/QZAPG1719230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765d698a1c25b86f49c8d73d4bd9dc6a36006ade4f43028868dbe40758cf5d67. 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/QZAPG1719231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f97df1e43285660944c929e80f8c92a452f16f1739a019bbdc1b918dcd1c9a3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:19Z), 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/QZAPG1719232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70849585be7438861695bdc3c2ba96b8060cdbd8b4df2147c3d2ef3223a0ba00. 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/QZAPG1719233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d46c535f5dc72435114e9d6cd46933fd7ce3aced9d4cff2891f19f392a6c94. 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/QZAPG1719238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c6a3dd03dde8db9a658d8f3e8df0f33a5c556077f90df21b728c532bb708ef. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:49:32Z), 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/QZAPG1719239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd947e65976950aaa162545ffad1312896dda317075a312cd2d97cf692d6ed27b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:53Z), 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/QZAPG1719240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8f5addfc3e11d208511a0b11e1b08955ceaf922766c90e3e5221d9fedf43f9. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:48:41Z), 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/QZAPG1719242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b804666a66992da5d8ddd5793dce546eb47ccfe2c1e80a0f8f70cbfd0819d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZAPG1719244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bc98fcfa28c333eddf006dc7ed4de121370ae150e225b184d6f40fb2e71f17. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:55Z), 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/QZAPG1719245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5535379698c77ad133682e20e6112badefcfccc4468daf8d8d69d2d8c8d2f047. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:08:21Z), 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/QZAPG1719246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bb79d7513b1a3de18fb820130c6581aaf8cd58d6a3799f8088a15d7ed62ab9. 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/QZDA71832768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768348a0d589ba2269ba6584c4bc4e624b192d5f7d89a6c3c7a05a38bfc9bc2f. 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/QZ4JJ1921632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c71fc451abc54d45f792694b3ae09c4fa508d3c7e1e1306047467614c2ee0a9. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZFYX2168243.