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 0xb34aac8b37c3a2a5001cebe92bdfa57bddfffc02692972e6cf5724326ec728ab. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2092225-5995-4323-bba3-7c500dfbd641.json and https://artists.proofprofile.net/proofs/artist/c2092225-5995-4323-bba3-7c500dfbd641.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 0x23cca0551375dc3275177097140239effdc4f54a8849e838f0a9d1d112b3e4f2. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/SEVQU0900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60bfc5165f572fb01303d7647954ba039276e4577ee079dff955ac730519cf3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SEVQU0900702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa469faaf4bbe477b0ff68f608f63acae326a5f19e6b8f640d6cb390be33479b. 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/SEVQU0900703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f391cd2a1fe4a39e34dff903a25c3343b7dc0cb55690e6b8ad45889d63d3db. 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/SEVQU0900707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648a3cd6f7a1953a989867e3707030f53e5b76e343bead5aeb060e0bc469c417. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:07:03Z), 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/SEVQU0900711.
Reggae Music Worldwide A.K.A. Tu Shung Peng
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53beae8d977bbb4f94e0b2931aafd73c1c11d50aec3a29901b884257e015203. 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/SEVQU1202401.
Reggae Music Worldwide a.k.a. Tu Shung Peng (ft. U Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaac8ae971ffa0b12a49cc946a853c11c51f5809cebbc4e48a8be89d3fb97d4. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:05:05Z), 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/SE62M2291747.