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 0x25bb164333c9aea629e204488c2155a3d06cfa4a6e292a9ad958cb92fb8ed9de. 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/e3c549e5-df31-450c-94e2-0ae028ed9aef.json and https://artists.proofprofile.net/proofs/artist/e3c549e5-df31-450c-94e2-0ae028ed9aef.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 0xdc31de36518c6fc70f83c1fc5b144a03de8bdd5a54f9081aac9d903f47cbebc9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2098352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae0fd9fd5a7a334c26e11cbbe166a65473f4022fbfb0b614dbe51950e6dd9d4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2098353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e14ec506eeb199080e22749a38588699e6b719d49fc76ee6f7ebdc72b8aea8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2098354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcd766170bcb41c55a800e5602218b85f3d1f44f833ec3d951eb0eb27b1a8dd. 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/GBKQU2098355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a80b418db3ff89c4ba724148257c0079805cf7197b4c2804852920ccc21b2b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2098356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6581e941ac8527fd366635176e3885112f8f63c7ed1cd37fac3b957004730d55. 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/GBKQU2098357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9349a3976fa676df7384a3d5c4f6bafc35b53ec95e6b76b8425eb71089d720d2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2098358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b432ebedaa1cb08445f2a062c2418a9be1c71eb09cb2db071cbf9f113fd86c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2098359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054590d5e93eca0fe57e45eb37a36c88f65a9b1db6b571fe6289ea5fe3e8e154. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2098360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe1e3b4b5d0a84fd5184e9565fc6ba934103b0cb1f0a2ae2c33b062d1bcf1fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2098361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93982c40d26c71f8e3b6a7b363a353fed40ff9381af2f4b940c0148cd65080f8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2098362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6744c1f3deea955a040c5e5849a28bc650241b51d8026124e6107a569ee255b3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2098363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7248479dc7f027aba9de6ccf8dd2326dd505a2decb5fb572df6166040b83d1eb. 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/GBKQU2098364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394ca599713727aa9ee1db92bd7459e3ee009cfcf03ae19f8fc4dc2cf1be7daa. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBKQU2098365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb095467f9b6b78ba3743afcd740bb133a11e37c400b90c26ed8dec6fabd8dcf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2098366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9437056764ba41cd224c39aa06383728fde705eb01c0ec80760d4f5fdc8f5447. 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/GBKQU2098367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac37ab1d4a5d645ab20048797598087e7aa9bec311c27aec6d562973385612e7. 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/GBKQU2098368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb932b7d505208daf1290b95a5907db35cbd9c6aa187163c1006ce01f8d88be. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2098370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42274e05c9e36ed9985f061ad31fdb5f49d4a8b64310b692338e3c13d64491fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2098371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e831fd67ce202d2bbf011c4e57a30f8aa2bd2b6cf869feba33107a8f509041. 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/GBKQU2098372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03453a3838e7d8379756330734f0e3c3b984b1c0574d6a804c8158a3d1d0259f. 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/GBKQU2098373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b137ea5a86bd7e628cd00c7bb42cf65251ccf189f4f8716fc5fbe6b1a5ac2. 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/GBKQU2098375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87d5f597267416356a343399e3d5c8caefa54986c8b45270bfa68fe50c1c038. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU2098376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694427a0160c65a2c501b7b332e4c0332bd5e1fcea347e7c934c6705fa733228. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2098377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b2bdaa203b0b488a443566be66126eb39bc7eaf237c238d898d175c96c572b. 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/GBKQU2098378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec09b80ae0493dce43d1a17af268730fdf762f18dbe5ebe4c79461192f1f853e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2098379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7365fe23c2e8670059bef7aa39437b1994d2d9e269c763e9040a4d873d594cb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBKQU2098381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3872ebac5d875147159524d2cb09807ef595c1b96d77ff4dcc937324082b59. 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/AEA2L2291056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847b7d5078f16e41d9fa2e4287de7d8f034c33a6c7ebab2ff5a94659c0005f7a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2189294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec5c08cbbd4e8688d9d875fb97d1d9a48d9a64068f3aa8532f9d475645e7818. 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/GBKQU2152563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6925a6404e3ca828b8074fb058450a009d6d4a5b1789070785f44c586659c0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZAJN31800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec09b80ae0493dce43d1a17af268730fdf762f18dbe5ebe4c79461192f1f853e. 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/GBKQU2098379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf823ff7185164ca9ce6b5ecb4af7165e238f4cc2c9a3ac073173b57eafd6a036. 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/ZAH962005099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b411f100ae41575d2db1d823b3a5da9baa19b0207c87c16ad2d9254cf853ac. 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/ZAH962000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94867cc74f813c55161c5c81e9eb96fcf03cef399b99cb0f6922c30464a29fe6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2036766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfce4e9d2b410d08ba336a2a9a3e9c51ce5f08fdb57ab16cc7a98739727e0f1. 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/ZAB4M2000019.