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 0xa098eb73bfff46fc8a2b8715077207924abbf75e3fc0c45f504fb1ff50ad9abd. 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/02f2b5d4-04d4-44d8-90e9-ca3caabdbbd0.json and https://artists.proofprofile.net/proofs/artist/02f2b5d4-04d4-44d8-90e9-ca3caabdbbd0.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 0xf787b2deb19425fb80d41908504559b67c99d2f65083015db4fcba6948116f1f. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:45:57Z), 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/USL4R2023969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab7de0d2ab3e9eb9ac79e14d4dbba2ec4f2b2117eb8c3ace1a2baf77e5be7b7. 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/USL4R2023972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bae0819c7df5c62e33dba552e048505728f4b9f3c405fcf5b9bb6c89057a1d1. 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/USL4R2023975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052326ec750399047909d1c06f96b086b0d92eb504aecdf29137cbe60e1bdd39. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZES92480895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527e65d2e53f83b075017ae90eadf19a215e0100b05066ae8a47cb3bb9ac84cc. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZES92480896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706a07d1082a9c850c3c7c8fd75bbc7ed7ad2576a3cee8f41fdc34f89b3817e4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:59Z), 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/QZES92480898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633a934d012961ef62479b34e97d287004aaccd0ff68d935e0d901c500959c70. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZES92480899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dfcd4162582ef35d5a068398dacb3c901d430490bae6eb6af42a6f94d085e7. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZES92480900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe347cd93fda35d6b09d1e03a421f4a01ef28347ab5a497f8b82bf7133361c3c1. 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/QZES92480901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde58eb056def7bbeb14863ebd84ec8b3ac803310cfb4679bedfa1868bdf8e6b. 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/QZES92480902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194e6069604c0d9d252f136ef168a62f937e19477ec5533b1f2c10a9c1931eba. 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/QZES92480903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8898e44967184bcfef764b92a08686d564e8635daf992aee03a417adfdcf14f4. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZES92480904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe728d7549a4b3ed8c71224fafa84fb491c5b79e2e545af80dde5f1ac726726de. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZES92480905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fcf64387f33d4cfa581c2b4dcb437dcafad63682b14f845c5fabe4044c232d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZES92480906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a6221d807d68c1db5abf77ecb65cbadaef489e2a6b84412d76725a91d889d6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN42415767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0354807f4f8396d980e4dd3153500285835406b3a2385b7a2d048e7983d7b656. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZHN42415768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d135dead217f016aff7c2f9b8813ab6b0d22c935c43d024b066f6e6e96f604. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:06Z), 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/QZHN42415769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636447a70ff599ba848789bb819b4513b6303d53634e4432827ce1cbd46571d3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN42415770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acccb9f1aa8714800faf80b1e754587a320fc538073b277c74d1be35cf37c2c. 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/QZHN42415771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf246e75e492c796c6a4c8e203a126143cd5701e48c69c13f26cb4774a1d72dbb. 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/QZHN42415772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c332d327be5b56f93421adf085d028979ee0da5191d552a8314fa069d044677. 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/QZHN42415773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9086254d16ee2bcd4ce7284208b2411df5f35ec48b5bf625b19077914cf915. 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/QZHN42415774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3d0dec2afb4c6f3233bed65ade37bccf28b6f95819b19de7f9c94e46bb32b3. 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/QZHN42415775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cac64f601775df8646458b98537dcf18000490df4888b2dc4579223200e35c8. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZHN42415776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0371aebdf4b74031f4587bf765d0f6e0cf43cec0462df87fb6711a7e93b0fc. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZHN42415777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd4e4a16640f0112c942d2f4b23ffd4dbbb410715b50073254b8698c8cb9a34. 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/QZHN42415778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a626f4561f8e3b49fdf3b1ba57620086a2211e97faa54e535b0023c5b1659a4. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:52:39Z), 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/QZHN42415779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11a1a2ae8ec1eceba47419e9fe31db9b470dd8880551398ff202236aabd9600. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:31:56Z), 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/QZHN42415780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dbbe36c59d73005e15f498bdf5ec4f3a1c0ab32624a604e2be968b1d4ed697. 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/QZWFJ2585246.