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 0x00198ac3d493b5e33cdb150db27f7d03800447f643788568607bf9117cd10a05. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6f42fa7-574f-482b-9741-2b9f7ecffe22.json and https://artists.proofprofile.net/proofs/artist/b6f42fa7-574f-482b-9741-2b9f7ecffe22.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 0x580f1e18eabf4a7bc3b3882ca3052ae15fd38f8c80576c2e73d8f8ccef504354. 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/SEYOK2230223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdf5f9b5285d2474fef47772bf8a7c692060c9f38b77ac916b2ac5e9fad3f0e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2230224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8469b20ce45ae09330795283ba70eecc92bea6322ab928c12fbea678e2da7d37. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SEYOK2230225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda27c649c74a71d1bf8c488ec842c0a7e53ea821a237170c1d65c16d55f63c21. 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/SEYOK2230226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc309e1774fd5ea3ec24fa3f77f0da5c966144a5bca9020af43f0714d28172a3c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:45:36Z), 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/SEYOK2230227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21629e35a4c58d989cf3b7323fc77d2180ee20b628480df8952e7e5fe686a1ff. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/SEYOK2230228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcf5760cb4e01f025e3d8f872e2c0f4c8070f108dfb27170b6e0edd5254e175. 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/SEYOK2230212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1becc0a05d98169e1d95b50bb292098bbe1c5ce83534031d0755229f8cada8. 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/SEYOK2230213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc998c347848c7e7328b961c997aaa835f9453bb9a8e8fcc6713af927e8006ed1. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:58:41Z), 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/SEYOK2230214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698eb8d653564d63003a8ae9df179877985d4ec15f0ecb7bf2dc99a08d232a43. 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/SEYOK2230215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f35b95e4c8fe668153b1ffd9aaa58e267155c808e9ba60dbb980df3825233e1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:27:58Z), 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/SEYOK2230218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8eb987fce0e53fb4fac1a6c33894231fd602590005f77e2ddffcd1835f3c13. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SEYOK2230219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578cc1b937f7099105e636698355edd4c482e784d435f3d9ea511b82c90a23bf. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:51Z), 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/SEYOK2230221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4a0ee3bd46ed6ba497b0fee7aa7768c29d56b7141a7bed3f84183b5dd13f6d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:42:26Z), 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/SEYOK2230222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe5feceabc34c0855a4ae18c606ba2b9a0ecf4153a87ff7af93ec2bcacdbf84. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/SEYOK2239051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b235e24d107142f3d4ef584f39d339fa9e75154c13793d73d3dbb657605614f. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:02:06Z), 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/SEYOK2239053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dd08fbffe9321d2247bc826e1f7908214344cd1ef419897ede8e28fda1332a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:46:09Z), 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/SEYOK2239060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbdc6bf6bd0881c9718eae0dbcc73a1c5fc7e03092a6bd4b5efc41728b7014b. 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/SEYOK2239061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0fdb66ec22f9a8e0a0d68d51e62f179369bda9f94e7f24ea2cfcbd3c851dd9. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:29:33Z), 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/SEYOK2239063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57225029670b65ca2ba00dd17182398c0edade7e4c398d63edb38b926f766dc. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/SEYOK2239065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa18f764e78ddaa877b24426ca7543b85be0e368bb20d08345b324143c56b581. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:18:34Z), 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/SEYOK2239066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f69a9a090c9f5a671bb7ad9cd75ba11281a38a1b12d13622c85a1eba3ab7237. 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/SEYOK2241647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db934179b52bea4e268d84b30ffec1b7ee4502b336a500e51d3dfa3ee5bea38. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:34:35Z), 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/SEYOK2241648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa242d9385d931010f1918fecfb475d27aca8f8d977919c878189d2f70999dfd1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SEYOK2241649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cbdbb92168f981362445087e2e27d097d66e7fe8c4c7feedd4019bc726d565. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:16Z), 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/SEYOK2241651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34328cd0b5547cfbc67b986b4a16777af4bf51cf7b7db0e04d5c554664523443. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/SEYOK2241652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86618cf26449c83fe8e78ef97187bf04bf18f231d7b48ea6819f56546461f963. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:26:03Z), 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/SEYOK2241653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01375a32bf3b70df2f47c9dd4b468736723f8b9e05cc352de963c6da07081ff. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/SEYOK2241654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2150f3d820e542180b7a07cff32b7d7e4641cebb40ed2d00d051b59760a0e2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SEYOK2241656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512bbd7990476e57207fec702c48fde7585ec15fcc8e2b02c59332961b960fff. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:50Z), 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/SEYOK2241657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1c2c38309b7b321582341965ca3134c703ce1eb375b748d5257594847265d5. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:21:21Z), 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/SEYOK2241658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22f1abb6f170d7fad73d80a1bf40d8d1e640fb50be4a15186277fd96d335da. 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/SEYOK2241659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073d60b6c838145cca7c597c707603a9a5465d34dd17871e88f769d9b2aa3ca2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:02:14Z), 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/SEYOK2241660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2ca0c246eae6c60c2174c7e0d19d102aea4f7025eeb3070578e5296bf99834. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:02:54Z), 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/SEYOK2241661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b5d61795178a8711e2c9ab8229681400c2dc35c045513ec8fbacbccf6fd552. 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/SEYOK2241662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe741637c7db1b3aaebe099ac55b825e6d80999b07d530414515f14f5bd7a37ab. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEYOK2241663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57f2e6d9567526fb948ead1311142bf3a72f5280e30e0eb6e282d5f1f0ef5c3. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:58:27Z), 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/SEYOK2241664.