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 0x41f8f161cc4cb96e9c12552c623722e3cd491d904ba5e6da8b34813922d7a805. 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/85dcd3c1-5015-4701-96a9-14420dddd505.json and https://artists.proofprofile.net/proofs/artist/85dcd3c1-5015-4701-96a9-14420dddd505.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 0xa872c766d4de2dae414ecb5c78953bf30207b3ea521090078189c56679d0aa12. 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/QM6MZ2219100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe192f051608e4c28076bff512c393eb3adcd5ec2c3a046e17a4ac77b716bef5f. 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/QZES62367607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7622ca71a1edd2c60876c16fbfb8f05b9039575c975848c8f8fccae5e224bc6. 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/GBLV62304184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6119781859e123df4f58d514687c9196d607e5e65b0035a530c0acc4ff0d5ada. 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/GBKQU2357607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f36d7104691b7eed2e41b6cc930a4113fcda2a877530ac1179783fe40c58e9. 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/GBKQU2349171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cd4a76198663dca2415931bd40b5d77ec5f64c71fb5eaac0cd6af8c3d38f5e. 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/GBKQU2336394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca53bcdbb32f410364011ead74fdd54dfb15c47f42e2647f7d87859f306c37ed. 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/QM4TX2329979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c0bb1762265a8bac097c645408afb9cb3f89857ce339b2fa6dd92df64e030f. 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/QMDA72256908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37ce32d53c3c859f2aaee16e6e9d562ea0ef5d1e3775f1df35cfba44b116608. 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/QMFME2241784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7443d4dc5ef33ea73de3b84c730566cdef802d9659ee4e806abe347f9d8572. 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/QMDA72214302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e1e85af051c91e687521c7e1cc61d3149862a476001602137adc7341d2f42c. 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/QMBZ92297525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4370357bc7213ad086cc6a541e2c9a9ce794ad88db350be11d60efc6a9a01db9. 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/QMBZ92269431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0437112f83a65d7c47392877dc60c27c61a881e2937f2d390a85ec5cb1b9eace. 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/QM6P42227677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce618372466af23501ee9bdc420c7f15888fa8f258d18ece5c7d317d3bf604f. 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/QM6N22277131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b65b8317eddb5fb5045fba7d32c0316a2432cffcb08efb2869ae6fac620c481. 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/QM4TX2238773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8175539140e7b5beaea59c8626382a3274f05a2f5fa01fe24eafcde1a3a0aa. 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/QM4TW2289893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aca80c35d284b6f68473355ea80a6f20507d569cd8c213e70ba6eb4a901cdad. 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/QM4TW2253676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf078ff38962e2406a113cd0d72d072b3f597a4f71eba4f44cf8380f2153fbe9. 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/QM4TW2228610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7cab2738904b475395c40d81c166cf796de0c39991f3a32ea93644ffc4187a. 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/QMDA72143438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c28ebc7019d8ca73f4d22bd11a54edf1039d2e5cffedfbb08c8b7d61813ec0. 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/QM6MZ2133892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c95042be4df66639e12405f3fd7143117635637fa1848099d5a9b24a2479512. 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/GBSMU9118067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d7ee8b96b861724509dc36402679c94acfc5b4ce927314cdd8454feb497f27. 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/GBSMU9006126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26e84685cb2b16a3cd9577c4c8c6e80fbfe1153ef087cb787bb4f53d5aa8f28. 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/GBKQU2535486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b4109c085e399f613a12ec222440cef970245813a647221216493c8bb46eda. 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/GBKQU2505966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec9d7e200cb402cdbf39cb47f379bbe4628d8d084a41694ac5c4981c4a69235. 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/GBKQU2505964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96adcf691cd8f9d50f0745664656a1dab6131439b452bfd4e7aac01051f31f7. 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/GBKQU2505951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3552962fafb0dff97882e05b095a659d8aa62db0d64fff35789c459c391109. 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/GBLV62407218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf852e099fecc59fd978bd2a56a5e3620f8c2cf23532f8461569012546a2b7ecc. 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/GBKQU2485026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91628a01c3616e9357344486ae25ea72280b6fcc3a26abf6726ff2d037b48b6. 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/GBKQU2485024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54017d0eef789b78078494932ddf9ab131b66ccb9b267022b5db449ef6e31f6. 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/GBKQU2485021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aeb2a31698799fcaf5cdfc5a0aa7c77c117847c696e8f5e3492bb476357b58. 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/GBKQU2462876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc1352d04423d443963187f204a62e75f326d8eae0aaeb7291e488b35f1910a. 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/GBKQU2464645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dac724f0b06a6dfbf4a6c9a78782db37bdef1beb22478a81bc7f5938e74a03e. 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/GBKQU2449169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c88ec38addfe62974f3e032c2b779169f8e7f2a6acc2f781f8de2e2cffc223a. 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/GBKQU2449166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf042d742617f2a5b2462502285d26e0d06b1de37398c04c895e5ff7fe388559b. 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/GBKQU2437646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e900f229eb9dcb7dad057cbd4fd57605111c7208e02a4442f9663ddbcc4862b. 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/GBKQU2407710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc038a019c21ac71378b7dda1667faa9e1abdb5c984b89c530a2b815ad9de69ad. 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/GBKQU2401896.