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 0xbb0996d3b3615bdb58ac48462acb036ef033ae58c821f9f1413d826886f8598c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e41e4fdd-bd19-4034-bee0-c3d136e8d5a8.json and https://artists.proofprofile.net/proofs/artist/e41e4fdd-bd19-4034-bee0-c3d136e8d5a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Three Wise Men (feat. L*Roneous, King Solomon & DL Lex)
Microphone Masters (feat. Mistah FAB & DJ Lex)
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 0x973f75876b06123495315b151ddea4d287a73301ed8c9299d4c2865d78e84cfd. 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/USUYG1716290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b83362f0da376775ac8fd0ef1aac2c7848a227e9f255fbb6013eddb2241197. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUYG1716291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1284b477dda4cacd9970daee86d506791b3901f79e74babf0b11a68c6f954de4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUYG1716292.
Back 2 The Wall (feat. Cozmo, Global & El Rock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90576da46daaaee5c76f6e760c563b57014df6ce90b92eb948993957e074c341. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUYG1716293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576d385b97052c4143f9ed4b1c979367de5c0ef637d205a7294f1c8cb1395a38. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T19:03:54Z), 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/USUYG1716294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cdae4c7b7889938fdac60beb8aad3555a53662d0150d8322024a4a0e139ae4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUYG1716296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abab7998f9fb615cc3fa548160b4df3868290e17d0a5b617536160eb50ce0a7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USUYG1716297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93472ddebae2f89573ad637050d751cb945f02517c1cb01b49f5f5fbf02ba844. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUYG1716298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9736ee63db7637f78d5972cffff5eb32a4f643014edddd003a4506ea650195. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUYG1716299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e71327b03c72e43ccf44de2af1f8fcfe26d04c62218d472c4f823ff97b351c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUYG1716300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16abf4166ca515a213a6ec50e7b52abc44aa73f1f543f08d006f3d519a4f6aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:08:34Z), 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/USUYG1716301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85de23364b68a45570567e7d9eb4fcfcc6bdec8b11eddb46e266c3553163fb22. 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/USZEG1500995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ac5d72701be1616a6c69137491451f61f62b94c172c6877561f44f03ff78f9. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USUYG1716295.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
One Life One Love (feat. Matt Blaque & Cait La Dee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaef9a248a259994909327186a31cb57f4770c86ca8ed27874f5ebfab28584c7. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USUYG1716302.