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 0x80a12183c7e8d41d383d5a4181fd2a4875ece6e5719fb42a44924403751e84b5. 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/3468ff9d-ad01-4efd-81d7-0308c22d6af9.json and https://artists.proofprofile.net/proofs/artist/3468ff9d-ad01-4efd-81d7-0308c22d6af9.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 0xa09310729e4633bb7e022718c2bf8811fbd72ddac44e6a18f9e64ff0385d8f1c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:12Z), 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/QMFMF2220173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8541bc87628ea22d1f8241702365a69dd43873e18dddab509485738eee4fd5de. 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/QMFMF2219986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496f562eaa4a6f4d14153503a3e50dee3bb525c694074f982ea2966778163f95. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QMFMF2219987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83767dc0e5ef277205b1d141284d48d9112d0c0e79633aa5209621c52573ac1f. 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/QMFMF2219991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8ea2ea87fd9add5b37ebb3cba59b8807b9bc01358afd7c3e1ecb4fe0467eea. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QMFMF2219992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda41bd8789394948b9b29c77e5f6dcad5c10d6dbb004d02636e824d866c5b82. 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/QM4TW2355523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2c499659b3299407494d4bf2cba82f550cf4515585b3f4e165657d4df1c2c0. 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/QMFMF2220062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a9c9ebc609cad91eb8770021fb5be48ebe9693793f90086b7f2f0dcec8b62d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMFMF2220066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac36dd53dbb9cdcbe436d977fe82a709cbbf59d2ec67229089fe88915ac8286. 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/QMFMF2220068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46001e79989d8b299c3de45aacccd4ed71cabf95b6c7fe5812a36f73b314c241. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:56Z), 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/QMFMF2220070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e9fd40f7756a73d08d4f357c56754a6e93518d03df92804b352065d26da08d. 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/QMFMF2220072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2051fac23aa2ea494e33aa30688f8036a0bb9333b14b08affd1ca84477388764. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QMFMF2220076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ce1d7442deacf123d46f11504788ec1b9e5b94e3d9cd943942a3774ca002ad. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QMFMF2220175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da55bda7ba2e71257503d97531b5bf292b27838ee6f79cb9f644aad1af9f258. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QMFMF2220177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e6c5fcdcd68baefc74f1a3afcfd1b00300855e533676c074a0980b77b452c0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMFMF2220180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cd4e8dffe561238490dd922de318506f878ab4ac160535b42978da3a99277e. 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/QMFMF2220209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72dd9f45fad84ec6523f1ae91b61fcbf3523360feda2d18e6da277939f15759. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:12Z), 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/QMFMF2220211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebf99790c41e8eb1f4261a0b6035265cb744400c212deb539174cd0e787ab55. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QMFMF2220219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c40c7183d9a8671bc0ad865de20ed4c68248f44b1d3ea253833e5183de5741. 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/QMFMF2220220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfff6e86c7bd6a3b0434bfa9cac9e69f5f5a10c257afa5cc26fa38c6921f489. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QMFMF2220221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be3a61dadfe9848d2938aac71db1ea279346e021725caf79b131540428d49cc. 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/NOBWW2404010.