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 0x0b3bff5e73822b906f60772a1de881589573ad9a4c496c1aa26980d3a764c948. 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/3888dd71-af72-4d0f-8287-a011b8302c3e.json and https://artists.proofprofile.net/proofs/artist/3888dd71-af72-4d0f-8287-a011b8302c3e.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 0x7ab92b9dc034f5e2b780306c14ce886ad99e66f5568dbe4da4c1d2b1d6a95585. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFZ32557520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8973d8e92bc0dadb30c9a0b5dba48f24e3865c0ff3aa40efdc4c96b7db3c6b7b. 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/QZFZ32557521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a1d1adf4bf5a9a64e33eb81be49444261b61cc7b02575f446c7f53d6b0c42f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZFZ32557522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014689e760013a8fe91d54a2eeb1a02b509a7e17a5cc24641ebdaa9a9bde626c. 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/QZFZ62533068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c85b6bceff7c9b9ec756c274f7c643542c55c000512354c24e29dcb55e370b9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZFZ62533069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890a478f46d88e1122e270e2b7b7be549d3db0be9495b9c680b8f5a9f5366e54. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:09:02Z), 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/QZFZ62533072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd78b4ced37b6b58f00d240120af00e6f73c6adbcbc7f72ae44ab9d038426998. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:11:39Z), 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/QZFZ62533073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b378039724c926a40ea809c087e41d92ecf64c2d78ba18763e6c06a1492a65. 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/QZFZ62533074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00ae09fa010bd99c2fc0c668bb30a5fcb939587b0830dede48fde4a34102da8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZFZ62533075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fc78b769225aa79a95152ecd97d3695e9d6337e85f202ee801dc21ff0854a0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN32533421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3d51ff0d2a28b097b28f3a0798fff2bc9f0fa58a0cde759fbc117764c21d3c. 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/QZHN32533422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b32004edb2b4f771b7f534ccb3fb68934c44678c804b52789594a053f79e5c. 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/QZHN32585153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ad2e6ec98f15d88474532a62678c9df20955385956e6b8ea39815c0270a875. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZHN32585154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe132e82b4b3a89f3e33eadd48b5ba558c8c4d26b09e9eeb0b67ad801bec786c. 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/QZHN32585156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ab6c3e1564dbeb80cba30dc6699a820c7985188c9f294e58f6c17c08a261e9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZHN32585157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4602f73b79fcf99106d14ba31eeebfdf4e8d86b57aa5403444355ac45c6ffff. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:34Z), 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/QZHN32585158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0064c510bbbc8c49a5b30501c50e15787bd012c440fce451ea1eff6b9b0999. 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/QZHN32533429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee3fb2d182adcfee8aad9e1bda394b9e0725b23cf56a0c44ffb3122f3896c90. 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/QZHN32585155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391adf9fd64628bc67479e1efdbe9f470bcacdfaa53cdb7ff60a5c58b9c6e905. 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/QZNWT2551830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e95b905da36a10a5eb62fcfe1083637c66cc5f2a1252045e635832a5bf9834e. 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/QZNWT2551832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56124af4207fa57ea1c31853a6961ba43c03be1feeefecb325855b6dfa7d1736. 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/QZNWT2551833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073a51effaf5b74e27a4039cb7123227f6f956478a5fa8a8074bef0a6276867. 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/QZNWQ2583832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459360d6346579995f334a0d195d29f896f3782af1873608de6b1f7dd34034cb. 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/QZNWQ2583835.