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 0xb0453e95e886899a0e36a42eef5711d96d036fd551473f254c48dc1a0bf19c51. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1178f5bc-82c7-4d2c-a9b7-0052ba2825b9.json and https://artists.proofprofile.net/proofs/artist/1178f5bc-82c7-4d2c-a9b7-0052ba2825b9.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 0x09781b19a1a9c0764206f13626d88e30aaf82ee1c7d6a66342c4d6f5b419eaff. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZK6N2132965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe4870e5ae60f0b93ef9e7832f059f304c9eae7c2d02a020475b250fbfc4a19. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:30:10Z), 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/GX3Q92372179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd36cfc8e9906056b31ad16fa5193292e5409cbaafb7fa76fbaaf5f9c6af417. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAGOO2220217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863626332f6068d967d3a59e3eeb7deaf65a206e6561a7687e6ab26c1c0200e4. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAGH2262099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fdcfa7c9cf1167d24fecc0c4aef6103923b0fc59354e7138a5ab667de547fe. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:47:19Z), 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/GX3Q92378395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb9111196c479c188b16627ac0a7e7dd775b9147072ffe250f096f2cfc2353c. 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/TCAFZ2249799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a125445f1bf796788ecc5049ed44c1a658cbf3d6ee0e44d2dfbc16604574504. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:50Z), 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/GX3Q92378399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e05f9d69404d00fcf5903768c325d29c019e324a5c0cd3b087abb4a2df0d548. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZFYW2172190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82596e3fb333f386d88d154228fddf730dadebcba909e4fdb4a99ad936133a67. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:11Z), 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/QZFZ62136096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa697e99c0171c46534951a086bb25104883f1e40cc9dc486d693f4642088cdd6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZFZ22125771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b64fac8d12cedd85bc24912e1ca3ba1139af9f97dab8dd9c499eef38a9e17e2. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCAFZ2249666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6036c1e75852b2395aaca3395fa12e0948673a8b506510b45fee641fc3af4a03. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX3Q92386769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf4c286d67b41939699f3de9236adea10fdd76cb1c4be53c23878c31275fe6e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:39:53Z), 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/QZNWU2051849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588f7331f550938bcee41d4c8fabd527239e84345a9eb26ee1b5182e4f31603c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:24:51Z), 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/GX3Q92388905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5f9eb5b115853282f901e690f21fea2ca235c133a260bf4d606ded72375b38. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GX3Q92388906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b57eb429c802ff16adedc35c6d5f2f9f9757004e0bbb33c0a9b6073880d6b6f. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:19Z), 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/GX3Q92388907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09f7717da678e4233337bf2f37cb53bb068a6e90fdb8b7b4ac7cbd9c147d1f4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:29Z), 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/QZNMY2241216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863626332f6068d967d3a59e3eeb7deaf65a206e6561a7687e6ab26c1c0200e4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:56Z), 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/TCAGH2262099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664b57f02b0f4c51e27a99baf7e46046448ecd565d38d2eb1f6639c197b4466e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZHN72142686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58f8986f16b24b00573064c00524d2124146b255b787e529c8ec6db54f9a9bd. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:33:51Z), 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/GBLFP2320297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aedc7700fe3753f524f6b703f88b4f4f2164f07622d3ea0078c3f7f721e269. 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/QZFZ22415686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4245d43a11354ff103eefd39dafdce181ac90c2cebff8a4bfc31c45331888ae. 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/QZK6F2444403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f07cb211ef30642b1a0125a012f93b139c0eedd511c4b0107f1aa33b578ad8. 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/QZMEN2454207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a85066bfc23f34fdc8ed52df1e73c2c919de5c2774a54f9fd7659d00518c07. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTBD2464370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69aee8b67afaa9af7ba4025689709d4f2c547123523d773b77901717ae2f40f. 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/QZDA62539566.