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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c870dcd8257af8a10914a09cbbd9eee92d0190a85a74d6e86e317f83b959c62. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07de0d49-068a-4c53-866a-c687291bc010.json and https://artists.proofprofile.net/proofs/artist/07de0d49-068a-4c53-866a-c687291bc010.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pop a Titty Out (Freak Somthin) [feat. Wootay]
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1bc1caf55f523d8a3ddffe033aa44026edab4b69eb50ae6252344c7f3ad2ce. 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/QZDA81803922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58a84d0c3dc8603730fb087fb9ed9a5be6fead36b774c1dd9a20e9a68774469. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZDA51988937.
La Danza Negra 2k19 (Interlude) [feat. Augusto Mejia]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a12ee286a841484270ef742d2c9b1db68a3e3a00312e047c55cf94c5003864. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QMEZE1791200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba0dc0b5d0cc7f9b9f873da6fb3e98e31c767c58df7eee9d2a1520c2e6d508c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCAFO2144651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178ec511d096ecda94ca4340aa71736fc62c86182957c102cdd6acc5087ce542. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAGI2279066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b31938d6a677e5dd5b71781501f9f6f074c87996fd7817da63606f67e3d2aa6. 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/QZWFH2379868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f3d37bb3647337d6d43dd48dea6b73bde4a90e82e00a247313032809b2532b. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/US7DK1400815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d5b5c9e60565a08a487da5e4cb5866318cc345e28eff46b5fa2e5125ed6e7b. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/US7DK1400834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25259cdc83974753c71a42e4298c2a29b10ac5473c039c67801458e49458ff6e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZWFN2335761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe236039d090eae62e9a20d56399e8663e1894d9c2de55c86e1b41cb4d18d5394. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US7DK1400846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3700a2510f3e18715c6276de24fec9fe7cb48cd6bb639a33267a32509311c35. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US7DK1400818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba0dc0b5d0cc7f9b9f873da6fb3e98e31c767c58df7eee9d2a1520c2e6d508c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCAFO2144651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bae9c7d9ee0ccaa48ee778bdaedf800239cd9189afac6510717b46b6b38087. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US7DK1400493.