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 0x244246742c84d2000c44bf0555ac8b3c7542283b60f9e95590437821f581e189. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4f5d1f3-d192-4f51-bc67-5321670522d4.json and https://artists.proofprofile.net/proofs/artist/b4f5d1f3-d192-4f51-bc67-5321670522d4.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 0xb2936683c6ba58e41967a9f9442f30ff1a3b5441775ce39f83841897d4c97df1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US6WP1300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036625dcce359d1735dcf5a950dd51280e08656aa0877dc4cf68a340f1dbf045. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US6WP1300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f52bf4962e0cb87811d86abeb448992968c71f7c98371686e593ec76699d693. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US6WP1300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c7ff4e332cfbe7aad5b6c2f3b597a93121a61c014835e87ba07d55bb0388e4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US6WP1300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c14b807cd39233cf680a081231d9253d6d4075c35d9a263f1e0dede7451a61e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US6WP1300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabde12179d83664731a5865127331eb46acd3fd19b3b712aeb8c92e042cca1b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US6WP1400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b62dcfd8ca277836bf985e8c69fcb1606e11981c431b7ca10ddeac8cccf102d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US6WP1400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a2a5180ebe6aa35b8e73a7f6b7234e990fa4cdef2fe22703c2c8c54aff49ed. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US6WP1400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14706525698e766a8353c924982539fc047b4ad7dc679910de4fd8837a286e40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US6WP1600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cf14ac6abef5a71f4cf5baa63f6c7417f5efd047df4f15b78f445f9546b1f8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US6WP1600231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b4a86de2f8bfd5f525cd4b44e97958df17e167f810d7db5fe29dc526bd5c20. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US6WP1600232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb4ad07d6ce61c18926eb77579b470e02f8af654b1f59f693a71b418c0f4220. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US6WP1600238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d83ad98e075a2223b274110416fca64ce6ba9a785487954de51bdc0315ccb1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US6WP1600239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672d6e054dfcfaab4bb87372280b4a3463445587d72673f7eba3f242c9c76d76. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US6WP1600261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfec07cca0ca3a095f644742df21c95205ce0f46928ad54c0e03b35da63cc21. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US6WP1600262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2739b88ead1115380456dfecf45b79d631d0cad354e46a32bd8fbea7de5ca23b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US6WP2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4d0f4316d300c999275112a408df4e686e2f8c1a6d97a90d5c45f1ee51fab2. 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/US6WP2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1711d23354ba931b0ff6b8290fd9b0dcaecd8c2f357894e5f044a09704449db0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US6WP2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1231626259a533e99ab58576d21626724ca5582f75292204d0fae365e5c7d073. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US6WP2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39495ee8ba3dea3577985d3d6fa474e564eecdedc76c2f16a459663ce957244a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US6WP2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94dce444de3eec4d689f7ba2f4ce6d9e4230b83243139cb4214d4b38fe95386. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US6WP2100014.