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 0xb6fa0ba83eba968d4d1f727b1916c8194f8f192c806309d2addf958ed4c5862e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47632272-81b1-4151-81cb-10114dce9d2c.json and https://artists.proofprofile.net/proofs/artist/47632272-81b1-4151-81cb-10114dce9d2c.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 0x203835cb1329071ad0338264ee3fc0b475dad1c35db0dfd563d9dd354b063191. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:29:03Z), 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/CAHQJ2516098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5d49adf3bc13d53c8533e60f06a79e094c7944c60aef0add484309512a5981. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAHQJ2530294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51a9115f6b8c6ab339e90e2069aa00a75dba1c2b35ac03ee1fb42666bc2d275. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CAHQJ2589691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae219ef97bc6024efda9cb22167effa87574e4e5fc5854ec363202b3c0dc2bc. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:34:00Z), 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/CACWV2599812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2654bb0304e80781d40467fd9739759861c24f8f8a794cf57260a4a0ab350b6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:11:07Z), 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/CAENV2516950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea098730c89f78b5ad50713736b829cbeda81e2f41ccd0738de574605b562de. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CAENV2561991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e017adc05b2e743b57d4b6a3ec4af6ba19cc84a452ff44b406b87b0570369bf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:53:14Z), 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/CAENV2583077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b42e5a23f5e38a01d883a9b892b45773cb702c80709aeada43a7b103691de4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAGOO2584111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69ff93f6ddfa22b7802413640f2cdee31c4ad398bbceb9fc2295334a253d502. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:53:53Z), 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/CAGOO2584112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28792a19b406ffe71722388a3dc9b00d1fd9471ccd045f8e3687e43951569290. 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/CAGOO2584113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52057b6a983d627ae67688e06c6b51aac8ef1d610036d3466fda7d0eebb2ab3b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CAGOO2584114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203236a340308fcabc7756656c889fdee01fc918955ec79c669748aa5e00338b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:23Z), 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/CAGOO2584115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2835b3f82f30fc68c763da9c98be8a2e20fd1cca56f5f2fa77dccebfb1ec9263. 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/CAGOO2584116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3416aa9727153690c9c31d3f21795caf3be5d69a89cc522710a5e3b924fe2615. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:21Z), 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/CAGOO2584117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb981c75c79da71f958d370a7598155fe471b9c32a600e84624726244f2676653. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CAGOO2584118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d12505edfc99ea44ccc5fadea0375e28a5d8441a8eb4fac615e2bf593fa9ad9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAGOO2584119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78badd7cd4f7a86fad96c028abced2ca08f3abc35c4592583a955bd87784c622. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CBEYJ2502581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566ba2e7c4e34adf8bdcd4ce2892c1e8e6d934161bd147c0889f62cc56eaafd0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CBEYJ2594364.