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 0x6dd2076ab9b6b6d356851ed55064295a0ac7466efc8c132cd9e08574d56c7a26. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c963cc6-79ae-420f-a4f4-167da8c7b2dc.json and https://artists.proofprofile.net/proofs/artist/9c963cc6-79ae-420f-a4f4-167da8c7b2dc.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 0x2cc25b6052297e817e210b10f442725f8e94123d80916b9e5470cd7d0a309f0c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:15:23Z), 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/QZAPG1759434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb586194ec8b3722b00dae78cb90d2a19d69fc4aa0516deb21236eecf309c31b2. 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/QZGLS2121370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f43730f9bb3b46a470174d2e51516984a1c3992a94b55855c9036c0d0ee8b00. 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/QZGLS2222234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd51f440f9f58865291ba0ce9a0675e670e55ca390dbe4dda26243f09cb6117. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHZ42207944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4935c595c5969540f2014f261d458c4b3bf72dcd4423c7b61b2bfb6b93d2c366. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZNJZ2282002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec94c1a2d7a8203dcd1d9788baaed56c51e4d2ecba3b8fb185be066646c2a79. 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/QZW9N2211511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b2ba1a12349874373ce320b59c52f3d533afa09161a2148db51aa73e260979. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/US7VG2391880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30def26e02e3d286a0b8dc8620e8822df779cdb94d3f46788fb2535d4947be7b. 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/QZ5AB2373948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00a008a76572690ae66e8ed24fb10ef3b7d3a6a60e6f85d48c8f556639fccef. 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/QZ5AB2387537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c6bcd136da5f739ad8136c015732776316a3617ced38232e27c4d0bdc0e6a1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJX2304208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39590f6bc166f0db48341675698b5e31e53619e570151fbdbe86d348ae445de7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJY2326501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f956760208759ea14d62c1d7e90156bb12054e89e456d4d04d08933689ee5a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:24:58Z), 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/QZTPX2322751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0931e35ec2afbc235187c645a3f62a98a162ee853f92578b4daa457b8ba9e3fb. 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/QZTPX2337357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890c6d8d07e1a3c8a001ba7bc1c603bf912a05e618820308beb2410b142fa84a. 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/QZTPX2382677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aa2bc380fbb718683d613956dacfa059c7903b7c9a1364398cd00d7a6d9582. 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/QZW9K2380129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f063d9f0b9d689b127076f2244dd5fe4f828a6995ef3b505070f4b0a22e0c4c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZW9M2300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ffdd8002015906638d093e4bfdafcb63fa9e6fa15433a4946254accc7ec229. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ5AB2408002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77805fa033489c55a265119aaf6279d4ec60ddc3e82afcfc84a119ec851ffb09. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:47:06Z), 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/QZGLM2405929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f59ffc29b1af745fb3168943cb4fb5e2b8f694a58171b3d33eeb521db7ac5. 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/QZGLM2416457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0931e35ec2afbc235187c645a3f62a98a162ee853f92578b4daa457b8ba9e3fb. 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/QZTPX2337357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890c6d8d07e1a3c8a001ba7bc1c603bf912a05e618820308beb2410b142fa84a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZTPX2382677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f063d9f0b9d689b127076f2244dd5fe4f828a6995ef3b505070f4b0a22e0c4c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZW9M2300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ffdd8002015906638d093e4bfdafcb63fa9e6fa15433a4946254accc7ec229. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZ5AB2408002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77805fa033489c55a265119aaf6279d4ec60ddc3e82afcfc84a119ec851ffb09. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:15:33Z), 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/QZGLM2405929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f59ffc29b1af745fb3168943cb4fb5e2b8f694a58171b3d33eeb521db7ac5. 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/QZGLM2416457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd1f695d2b7cef82eb3f54b92972d9d3efdbfd17e25fb6962b24843b7a9a75c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:19:41Z), 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/QZGLS2496117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53654a78c4b0a659ea5132d03deffcc9ebd8e4f77684ed8a020bf1ad2b7b981a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZGLS2496118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96d9f920f7db432effaa4a0f40d229fd152c741d1162a00c316ad9654ceb651. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:50:46Z), 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/QZGLS2496119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9f5c4579e6ef89ccdfe090a308493a642773ec778aafa8dae4c2e68de885c7. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZGLS2496120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ebdbee67354483ca143f93dd21a2ae5f4788ba5ceaabb368d07c33dbc63f2d. 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/QZGLS2496121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f033f002a9a0e0b4a427ba408321fb0a3045603477e3cc31ffcf96acb5abff1. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:57:17Z), 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/QZGLS2496122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b9201a20ff3fc797f1f2b530553d3157117f761a170e215a6cfa54154ca3f6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:54:09Z), 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/QZGLS2496123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f16dd85ec6e812aec8d08dc675208e95cb548d5cf63dfa3257838bd5ba08a75. 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/QZGLS2496124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f01a12673ebedd1730311fdf1ea5966e2bcb513126fcb3f7e65909b3be2abd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:10:46Z), 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/QZGLS2496125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d9cd7d7c426469a571fb89dc32c4d24811a9b9c063ce9e9c18bde8845a8a5c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZGLS2496126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068168d1a97dbaaafadfd6315c6c136547677d07966fb94e66803845ced4880a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZGLS2496128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261bae8311d078c17fc3c1d1ba94641c5407c29bc234559fb2869bb4fa969cd5. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZGLS2496129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19202c962a7b849e9e936fa79e852961c61302729ede1833b37cd7041faf40e3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZGLS2496130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7356ae4ad6977e2461c6fa9d70b2548c34c6ca922c60768d22fb0050bd18a5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:22:01Z), 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/QZMZ92492481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ce2e34589d269db729c5a1e461b877e739c6c4610f41489a3a9ed1803cc9ee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG2539306.