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 0xcb4368dd49a85571699b5ddf07616be61c6b5e7efc10ff80b4768a99b0f942a2. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d275e7b-4c16-4e3f-bc0d-d26c631f347d.json and https://artists.proofprofile.net/proofs/artist/8d275e7b-4c16-4e3f-bc0d-d26c631f347d.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 0x7a912e3b32c57a96dc36517cc44f34988dce936027dafea5b878c341809ceaf8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:29:48Z), 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/TCAHO2330801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9adbccd1ca2836b0f70fc7cda52387c20c1d0b3f0aff15f1016c6a64a92efc0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAHO2330812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc77df40a43b25c84d758898e794423cca7ddc8f97ebd06567366994f196e13. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAHZ2440707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972ea4fd873dc8c3ca2517ea9ea48fa362928f984ae9536758c2563677cd97a3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHZ2440768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4efbb9eb21c0a370928a8753d42624934075576de2964669fe097076c3703c1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:43Z), 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/TCAHW2484802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecd76bb94ecf104451608b46f712fd563e94bdd0aada679b775954a0a46208d. 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/TCAHW2484811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9bef125fd910cdcdee0afb6bca341b0c209dfa540f76b7b6d1407a17bbef95. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAHW2484831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e80cb5f5f1726f2c2b39038c37a59cee130ebedf09399991f0e7a873092463. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAHW2484841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8880af61e219a3ded5fd53554815452dbd2bdb0c7dbb03b62b808d37b1ebd7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIQ2456430.
Amor Prohibido (Súper Brillantes Del Ande)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e274f9516fefa805600887be8c891a4bd447cd2acbedad4a66d8e19b34a82b. 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/TCAJE2547431.
En Silencio Te Amo (Super Brillantes Del Ande)