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 0x28800b5e92dcdcedaa272765f3225853b32acd365f528b7c55b433f4fd3d75c6. 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/36602378-d185-4852-a0b6-bacefcdf60d4.json and https://artists.proofprofile.net/proofs/artist/36602378-d185-4852-a0b6-bacefcdf60d4.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 0x9f1b2e1f9b129b83520e2aa848100014a1fd7e955bb57f9441cf560a9132573e. 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/QZTB52591140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa347d31c0f7a168616c89a166e47e7d9ba5a21a02e375d0618e167f472df727. 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/QZTB82500569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327e9ca3215c681899baacecf5e079a340a9a4206ddb36a628ca19a1d289afb0. 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/QZTB82500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe8e627247fb11167972bb5c1854bfc8003eb05954a210f17f85c73164e5be6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:03Z), 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/QZTB82500571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6d0a8468c1963bf51b2b713eeed706d69e0c70ad13a4d24153dfcee3dbe868. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZTB82500572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa74d1c4493478fdb9aa57a953dc9dd9501be61b16b599f2036ff030656e712. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTB82500573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67478a101d23db318ab50f73e6b047b0b4f11e400a1a921c298046985abf8fc0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZTB82500574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1004a883e57cdf7ab841739d659b51a4e2e66989fc714217069be235c3137625. 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/QZTB82500575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb531b964fa411140b27f05c6d1df7191b0e54e77f9066577b7a9c8672619cc18. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:52:51Z), 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/QZTB82500576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0445d4b64a2a28344342bec09e55b7d9a2894d32dbc78e35fbac3463bec2a7. 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/QZTB82500577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e618d5dda2a5b4cd13c083f7c2f44ed99aacd5703a9a70247ca555e6fb62c1. 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/QZTB82500578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592c4054e95a38a666149a743af37bf0961df4087a1c2b9b45d6a5c584bc952f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTB82500579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3d8120cdb779bfbc0e97295fd5e763ced6dce82d550b0695c591b3da772f66. 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/QZTB82500580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa986013baa6f1dbbd1a6946da3e0fc7b5241dff2ecba3c66744d4105122eaada. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:08Z), 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/QZTB82500581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957841cb76a297aa36c3318fd714e995c197fc1546a00cfa5df76c292b8818d7. 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/QZTB82500582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da3d193d671d9fc34b13a0d05e03151b52e96e4d47fb2cc0e076bb0c27dd694. 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/QZTB92551852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe6fdc4ff962efa306ee6c7231812e88e07ce5790e928b7f42a4997f3dcdedd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTB92551853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944a523a99b24760574f7fd3b42773a5df79ebe0cd4d80fb5a0946649d21163d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTB92551854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed09bb81e5a7b07c974017f173e16d7d801f9da2c17e50c8cc9d5592cea39ba5. 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/QZTB92551855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a069a35145591619ff92b4f22058af72a4c06a0073dea8e5378f29fb29a648. 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/QZTB92551856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb638f203e8699ddcc30f5d871f8f56ef619982a7a553687966857ac6a05a0c13. 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/QZTB92551857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131d3515c0883087a5b0b62d3e0610d1bbab88251ccfa084922073cc138d23ee. 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/QZTB92551858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccd4a326599ec199fcec863306116e2105e7959ad8abe8e9a79465aab2f78f6. 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/QZTB92551859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95602f3d9b3d3fa789ee2e60c59fbe5be306e26ab8da6c6674376a918a93f89e. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZTB92551860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cfd0151a97b6539303e843228f2e12b6a47e2ff942f5bacd567724cea3394f. 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/QZTBA2566839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0481828fe73629889ea96fe9e99360c775c001e4211d3fd11b1f5fc02979a87d. 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/QZTBA2566840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe783953714805512389b365298715887e803f8eef37e017b4ba2a7a06a5ff358. 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/QZTBA2566841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56809c494ff3d25ac395d40ed65dea03a6b7606c5435d36d2df456bf649f67e5. 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/QZTBA2566842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07806fbfe83734e27d0ecaf4d9f830a59b6233c5e5f756971555a54a57cd47e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZTBA2566843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edff540e9e515c3a3c13ff44cbbde80c7eb941c6d5b74e9178578034b8a71dc. 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/QZTBA2566844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c94dba41cbe4b3b6289ad8c55af856757f86cdc7585a559a03d53de09eb2865. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZTBA2566845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884765b8f1107506c399f1a865b5441853a0951374c0ac52b4a4e585baacf1e7. 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/QZTBA2566846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a62a693ca71e7adfdb56b4c98eeb5bad377caf908d197adf39e1eee7e0a087. 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/QZTBA2566847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d186b8ce4aac08b0bee9e4ed20c634ab15edbd96c1ecf6f8e5edde7df2ce07e. 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/QZTBA2566848.