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 0x4efc63c43833e7cf014a917d607e441b21b12daff6f4f09c0e87ab243b5f8af6. 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/a27e092c-6d4f-436f-a2b9-a7b40291e547.json and https://artists.proofprofile.net/proofs/artist/a27e092c-6d4f-436f-a2b9-a7b40291e547.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 0x72655815ed08b212ccdce86882af3412913efc36908b827a8c8d855a0714d688. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QMEZE1939361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049bc563b8b466a0be8a0178d8d00e576b301f9a1827da6a797d76e17368de86. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CACIY2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce76a77ba702c975733ee76ac18bd2cfcafd15fa1efd5cae8c95fdac453713fc. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/CACIY2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6bf24232c06cc115c6085597001d6d0baed5a8a24957d6089afb85ada7f6ff. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR96X2257120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3392cee0cc8c67381a588a0e16e46fa707466edce09515d6d6b5f198a2cb621. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/DGA082211749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619fe10dfa517327ea0fa7e9061157748c22f2633e7668199a67e521d0e74bc. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/CBDKZ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e77106ac4b64f7ccef44ebcf28caaac13673f41380ad34b1277a0c0bff45dc4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CBDKZ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2329d1aaa54498d8384ec9bf52866ccba2f022703b85927f85321c06c5a47daa. 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/CBDKZ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ed22e7410bc7ecaf4c7503395d2e7c5a4ca98837de9a7872ef0a42653e7f3f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:36:52Z), 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/CBDKZ2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173de9d80aeab463155437223b4fe8a2129d546b97467d1c0176bebe00e422e3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CBDKZ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346d2d48f5dddd6377cd1eb412f5f90f2530f474a0f590ce3cfb846be64f945c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CBDKZ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb7905931dd5763438eddc9ef72aece8f5a7813cffda5eb5cf189d9b488ea4c. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/CBDKZ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f566cf6e6ef450e418796bc685ed18b174080a3eeb2c2f7339fa02a9a1bc2c2. 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/CBDKZ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3392cee0cc8c67381a588a0e16e46fa707466edce09515d6d6b5f198a2cb621. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DGA082211749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e77106ac4b64f7ccef44ebcf28caaac13673f41380ad34b1277a0c0bff45dc4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/CBDKZ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2329d1aaa54498d8384ec9bf52866ccba2f022703b85927f85321c06c5a47daa. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CBDKZ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bb2d8f087a5743149d7bf3a1debf1f399c49a3c39f7fb57a24e7f5a73ab9b0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:24Z), 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/CBDKZ2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad69d90e8a49b58b9097eea89709d3636b871a2d4eebb053f399c79127749f7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CBDKZ2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb387a3f02e5ae46605db37ce254055978f0ecb00367428a51253894061a0319b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/CBDKZ2500001.