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 0xefeb462f40dea3d3c17ed8a79880882b2f8542a8307ff378410ebe8e1a2f2a16. 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/8dae467f-9ed7-46a0-8c72-2fbc975f20ad.json and https://artists.proofprofile.net/proofs/artist/8dae467f-9ed7-46a0-8c72-2fbc975f20ad.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 0x7cf312370fbccb47b22d6a91b32a5d87553503decdf01a2ed13399a03e497247. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX281977176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e02cca423ed9837039ff452e936ad6390852317bce16388bcc56909496be13e. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/DGA072383882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8510da3f839dfab685f6f1a797f5c7b4b6a893243b2769902b8fd17d1236043. 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/DGA072383884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd71e29adb38ce76c72791d9823b038be2cab6c8050d72e96efdc1ef16627e8f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/HKG732018153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476d30fc00e3ef32a358f3f764f75120b60cae6649b0e660a27a436a5d6e2e14. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/HKG732018152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f789ff525b30ccdbd65ff088b5166b97da50eb20b51fcdedb575e5cea65f645. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HKG731549765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d5e779d2f3951503c22fe5868373f4d8c6803bacc40f659a91f03771552ba2. 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/HKG731617079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a3a1cdb2180334a07e7aab8eeff1cba37a23c24472e34053c4efc4a7e227f2. 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/HKG732100357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ca5fa5911e5abb69e2652e851d00949510978aad3829341be703b60ce15fa0. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/HKG732147700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa241df16470cee9f1e1e8c1c3d8904b8cc301c78d3e4a9e9eb388ba86262089f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKG732149250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70099077928a35775b5157502bfed6764920a2e3c5897ae8227efd056af04fe6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:36:30Z), 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/HKG731861791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b123b09e3390c7d9fd61f9a03608e3d95a6a85440da21ba4bc175cc9165cb7d. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/HKG732232210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc594efe5aa400edb784b4643af53ec06fb361c64e962377dedc444521d20ad11. 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/HKG732246242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429fa5bf46b720e5cc861d5d59e5d26f538740563f2917007bfcc230fc62f222. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:07Z), 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/FRX282347331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984c37b5bc2965d25f3eeb7c0d288153979fde97a362bdcd877de352249137df. 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/FR2X42460872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da8b9fb241ad6f02259f47ab2068626c3d1b53b876c219399f8e9fa706081b2. 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/FRX452458244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cbb3dbbb9f63d7d2fe565c8c0617b821d46bd4e58c02f901675efb797c0c4a. 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/HKD012452847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94754451ea825b23e9f695e94e36c7e59f1d41b2d8b50b550e5976715023c4db. 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/DGA052414663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19303ea779801378c827e1d597ee57da6c3f6c203f0dc4088025c1f310d84fd4. 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/DGA0R2477995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc57121543754186b04464261d3013d1ddd2f37edf7fac0e48eca0f38d274513. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR59R2547262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a7f3cf08b4e75ce224db4ba68b40758897244f37c74dff741f2572a7b65fc9. 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/DGA052571283.