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 0xdbe38aa4aa7a4bf942bfd4bba3bfb41252998b25147934a695d7a36d20f55109. 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/075efeb5-4be6-4c34-8b05-55b97a9ac404.json and https://artists.proofprofile.net/proofs/artist/075efeb5-4be6-4c34-8b05-55b97a9ac404.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 0x003b55216558f45a8ed75d4d82739624f23621b4041117b464d01d1988d9aacb. 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/ESA011573431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84fec7d65b0e401bdee17f5e828ee5959a936dc15032bdce864b39cbf4b65ec. 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/ESA011573433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b826d4ec142a444b832dd94ea3fc4f84504aa4c0ed67b1765c9d2817ed1a8f. 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/ESA011573437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43c56467085d4ace0f0c58cb42db9d2a596b245c6d7b5d34f642d5c24b90b8e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ESA011573439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82f092414f35d98f61110335a02a056bb2e4d2b0d779a36460570229f3c79b1. 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/ESA011573434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2a86723c8b110ea7d2766c2959d960642f5e1310182dad2e0d3e3e54f16caa. 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/ESA011573436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542ecfa59c84db6bd7b3d81087bbafcaaeeb9af146714c33e1b58bf83aa9b6c1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ESA011566364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f288975409549cbb76206c0e65e3a01525fddff493c3f467fb63515fe6b7db. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:40:35Z), 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/ESA011566367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6959d02618f7f8bad75c3a6a046a7fe62eae99683f42b830f6eef2e18e1a8575. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ESA011566368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d310b6fabd7a686e36c7363d73d384146458999a7431b10bf30c7c888c70287. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ESA011566371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfbe0afc56dbcb07607e418cdb9469a102d911cf8a7eedd1b408cf11393df21. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:04:25Z), 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/ES5352306144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18264b63e0c8ac78c157827e2db8d796c82965d3c4c2ba0088356c67832cab77. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ES5352306149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419b602165f002e3db41d1817dcba7030db500fb7b346e2b4b777bcf8f9cca42. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:49Z), 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/ES5352306150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964364368f9d5137f6bf7e5e1696978d7139e006b07c5436580e252abced3ce5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ES5352306153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cff41d9b7cd1dfdec39ea02737ea393b81ba8bbaf44fb661bca79cf67d76dac. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:57:57Z), 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/ES5352306154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393e9816c4a3de9cae1c0fbc81586ad4f9b51227088b5c34b90b527cb477899a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ES5352306157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e48f20213f6ae8cfce8476e71f65137a3888625086a8be870999a26e5a4d94c. 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/ES5352306160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542ecfa59c84db6bd7b3d81087bbafcaaeeb9af146714c33e1b58bf83aa9b6c1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ESA011566364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d023ae39c1fc66388797d8fce14d3e9608408019db53c98fab397f05b2193f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ESA011566370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d53c77ee68f0685c9358b16e057f8798810e18ae5bf28176f7aa92c0985da63. 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/QZTAU2389071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272a82565e783be7ceafcba7b799be36aa19d87ea3f60849647ea0aacff33d2e. 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/QZHN32487701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cb683d6efdc4616eecb5349b61b0ed5055e4309c18bb6bd13a8e8dfbc1c8fc. 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/QZTBB2504445.