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 0x9c42122389a41b89e9029a62c3952430c91b9f2a2dd0bb31cf2177d464809b10. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27ae2a23-efe2-4e4d-b8ae-79439f830f88.json and https://artists.proofprofile.net/proofs/artist/27ae2a23-efe2-4e4d-b8ae-79439f830f88.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 0x311de627662351c7bfbcab8b640c55010adbe5741c4475d5d929bfc9f7aabbba. 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/SMRUS0064927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3a15125da948ad11d01c10711ffdfbfeef6328192b328b5b63411a0b3fc992. 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/FRX452142611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577bdaa0eb7310fdfe42cfc0d90b7517965ad22d425f787851ea4da81daee3d8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX762147314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e552e3bffd637e027d888401740dcfbbef50b764b3305b1d42791ce72268d45. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRX452254927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c87c033434037f52e9f13a07c7d2e7e2b14643050f4219447685bf8bd32469. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX452254928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a422d7a4ad8070400b5e719beb4b953c65cf10696dc0859950040b98ea2591. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FRX282231086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daf2aa8f1bd24640981d504ba378d6b00ae108d0485e44ad3f821bf84ff3a6a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX452254930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b67d466aa3e0798259af198a432788c0431453190f2acc8bda73070271da5f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SMRUS0073807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c503acefc4a6ec61c0ad444aedd1d1ec07efee556a09a70715148559c012be4. 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/SMRUS0074304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c13bd51f07488eeea92c090acce53078a7de5c5fbf1b76afbecb79b62f0ff11. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:56Z), 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/RUA1D2309148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eef0ac1fa066d25cf8ef8e0ff2599acf1e52d45359212bd53eaa8c50ac805a. 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/RUA1D2389569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d40feb72666ba6304cfdc02a14eb197e02834f2b601bc09447288b60d53fd2. 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/RUAGV2305446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe720c9b3e0238c9eff310aea3f06049ee9819e4e6b0dbacc1aac0896742d4556. 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/RUAGV2306763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658d9eeb6fcf374bc2d1246b6731ee2232692813575928a5bd7eb63a4f6b8fd9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUA1D2448831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2641b36ff677f94811ec0c6d242ae78169bae5cd52eed6b0616bb7c5ac2124. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUA1D2483605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38463661b3734d6f9aec4409c7f63e2050d756660af96772e40b33499b46c0e9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUAGT2400550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadea2a7e72a53c182579b61140b9c0fd03e7ca57f2a19e7e720723f78e2025f. 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/RUAH62410080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3296f24c235b854e311a94d2d275b518c6b74acca2d157b99d07052e48488f64. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RUAH62410081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1e0243e37fd91a3a8d6c3bdfa8a08e83ed4fa0e4e9460dff6462466675a375. 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/RUAH62410082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e37f70a06edc2c763de9de0f9987c62cdf8d428a8a7286e1456522587e37315. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUAH62410083.