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 0xc5910773cd6712d1323b4422a21571d5679bbf7184f78a62640e096c02801cdf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7245eacd-a47b-4c9d-a301-a058700b3fe8.json and https://artists.proofprofile.net/proofs/artist/7245eacd-a47b-4c9d-a301-a058700b3fe8.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 0x7e7bea2e5f0b2ce03babba1a9106a34b10f48787bd198dc646f9dae6b87255ac. 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/TCAJH2505239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0a96aa43955a243ce67f5e510028abc03456051bde8adc001835b26eea89ea. 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/TCAJH2505246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f38c8cb46a8435c9a252e1494398d750752176e745afb1d830b992fa686149c. 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/TCAJH2505249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb59751394169067fa73fea124c91f0dfe635cf773cf280672ca49e2d844a5a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:18:31Z), 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/TCAJH2505252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5658fae8529d53ad625b52dfd400ba88dc0d74730d0c337379a1d837f87392f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCAJH2505258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996c08e8a337c84690c548736d1d499155ae069888649dc7bae70632ee5e0f5c. 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/TCAJH2505261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efed5f3cccc9b38e8b868dabb76f5b322ea2b9da20bb9eca72b2edd682502d9. 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/TCAJH2505272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff826b50aa79704f577551275b02902227ba82ca92e9a1e635a98ece3f2cfed. 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/TCAJH2505275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5095cd8ff39dffd03eca91ddfd93d1f54a539afeb58bad600b184094225f460b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:50Z), 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/TCAJH2505279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a9e4af25426d23693f36e627d6469e791d1a9742c63d090b482289cea12fc1. 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/TCAJH2505284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5f292183b82781e10b9260e3621f702e92d23930d7b2b13e3a24b39d5d0d98. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJH2505289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a166264b327390f81e45060bb79a7e8eba3b37d141a0527873d4c1991f27611. 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/TCAJH2505294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6d7444289415c3042f3e9a0f9b3363ccad7666c47789af9519e219938a7e60. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:15Z), 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/TCAJH2505310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9c526c09fa027a2380b68c0aeb674bb56b34e9ad72b10574ba453a75e619f7. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/TCAJI2574800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daad4ca59c53158fb7ee5c35be04b6849c470d67f62f190ab429683bdb0d7ab. 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/TCAJI2574806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426c54851071ee1bbc18c2caeb243ea9a724c4c2988bf3ef9195ad4d1fb0a13c. 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/TCAJI2574807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d7a0cafd85a335aef8bccffa4b7cfaca23d46ed7258854c6cfc3bf7a55f506. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAJI2574812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea7bffa6a12ec60d3eb30fe2568d3b60d8cd1b46a91e60d41a7b74eed6fb371. 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/TCAJI2574820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08de70e16cbaf1c6986ef2dfc99234f967193bb5a7e3e4e16ac38a2df708bd82. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:36Z), 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/TCAJI2574823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29438fecb8af4039f179f04b6a433e7dff150dda88b82c72017f81ce3e10d5e. 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/TCAJI2574834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1d67c33e622f5c860d93ea8ffd4b25a72bc5118944b557608d39acae0c8cc2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAJI2574838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcaddcbb6fe2a24e457c7af78cd56e39ceae9e5866bb91a83bf02749639a9eb. 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/TCAJI2574844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4a78f104bd61f9d15a41d85fcd20371bf8b3da60f07d145ec481e7843fee8f. 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/TCAJI2574848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc314091da7526f9e4174aecf102f330fc4b15458391db069c61d1daf513ad632. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAJI2574850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb745671aafc0668b0995809afa37b49d81322d74747ef5b2caf05363c2afd2d6. 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/TCAJI2574861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeacdafbb340887aa5dbe7862b463b97056e6bd672897bcbb29adcb3fc22a38d. 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/TCAJI2574865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a2e05ced95222115644c7e4448c111a85d94fad0bd766f45d93af137a95fc9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:26:31Z), 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/TCAJI2574872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dea79f89038d09d27367fb856c695b1843b7a3c81e3beb6a48580dcf2c0f263. 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/TCAJI2574875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9009cdee985e334b606283a4bbc6ecd8627c108df826a12c61d86aa9318e9834. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAJI2574885.