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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 0x3b7ec2395c03361b55c0bc30abbbbd0ef8a5750ee3a1cfe0452c00f3c6e2d629. 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/f784bee3-d93e-4dfd-8718-883e776e10ee.json and https://artists.proofprofile.net/proofs/artist/f784bee3-d93e-4dfd-8718-883e776e10ee.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 0x9214019ff764f84b34ee3a743e3da1c2f97c19c9777cd826abc1f7c1082db9af. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM6N22127713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c51d006f46e70b63bd2404c1cd0dca945b04916e119023b3b5ce22775af9be9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:58:18Z), 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/QM6N22127714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c1ddbd7ee752aab74e2415c06cc821dd30e6d9ddabad126390f6381907dba8. 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/QM6N22127716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0d7531f570b2eefabdc64e74e8d9fd0b2ee2090fcd0fa3e19334bb317144ac. 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/QM6N22127717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf255d8b305b316d8c1ee592c9a06dca039bd08c5b88e66a0cd19633cc40010d. 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/QM6N22127718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0301e02673ccc3a55a5a7f61933e670b01f207281e2961b6a573c16b83e9b0d7. 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/QM6N22127719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07aac46c2a9ba36c082337ff931bf341602a85c1a4a94330b486ebc2b096e13. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:43:25Z), 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/QM6N22127733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77169e19b6870f21593cc3963bb85bc04402c742e32ae3f7cd38a6f2ffe61312. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QM6N22127734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd804888dc2f55d15b1d80555854451525282572656885f430fab34ca9b0298. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM6N22127735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74343a110c2694add1b62a5b773e67bb59da57ae3a19f09b2b6bcea4b325aeb2. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:44:21Z), 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/QM6N22127736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aa0c04bfb063ffdeb47d07ae4efd77b0e7f32c3be70481117563264080e3e0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM6N22127737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56207373140ba6316d7b14c3b434e7cd98ebab13a7f91c9472769f5ba3e62a08. 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/QM6N22138389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17506adf9262f4eab3a4d580bd4bc7c2e09d2ca908e788be708002ae81b4f03e. 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/QM6N22138390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14832fe734b5c4282d6d41f69d112002210139a4d9a5ef31a70da26d8830dfbc. 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/QM6N22138391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0418fd9cb83c639f76b21c7890227dff519ccd3abbea38689c200fe9ce378c. 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/QM6N22138392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dde2c05b37faf52bb470a966017764d6c7c86a66d113a01ec520ac7cd27caba. 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/QM6N22138393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d05d833cb1c1bef735d3903ff68efe603ee0126418ab3175dcd4be8b5ec1d1. 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/QM6N22138394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb71672e352cfa63f4b2e525ac2d7f52742922795bdf3fb1bf77fbe3635cb4ac. 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/GBDHC0190601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59e38c400f3e3c521cafda925184d9fecac10c0ab5b6523f34ae60631c46574. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:09Z), 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/USA560452500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bac53566b0427915a2cf9d303fc0689f1bc1149f2c6a519ecf76970480379c2. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USA560452501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73306f14b4a8c79d25beae6388bb8b47e8ed17dac5f36d8ca8b524e6fe7ec396. 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/USA560452502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf9ca98053bea8475419a3d01b4f280a997c7149733547494eaf0bb26dedb59. 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/USA560452504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db2d12c9d0ab951a5f711d9876494668a8fedf8d212c3d5fc88f626fd9e7caa. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USA560452505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80cefaa1f6c386209a790ec9b75b452993118467706922e19a469817e1b4068. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:09:29Z), 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/US4D80424001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbd158b79062cffd5d45ad2a92f146356e87e9c86f3c2f77e3d62fe1f027a95. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/US4D80424007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb679536406ee2c9a1638bffa2b0bab5f391b610668e6c736d5e48c801bb78654. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:28:30Z), 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/QM6MZ1867662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6381ffff47b1d6d4ded7a2e7796c8df1feaf282b77d16661178051da546ba37. 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/QM6MZ1867663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a01c27cea374e0992db614c73ab5f89929e9e12beac868b87201328f75feb4. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM6MZ1867664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6f4d0d58c927a203ffeb8db79bea1a402c23683877c4a95e0a5adfc7430d8e. 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/QM6MZ1867665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8dc8ccd69c719f3ad522eeb28ab7538d534511c0c281788a54caf7f4740c78. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QM6MZ1867666.