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 0xd7b2cd2f83fcf51fc78f4b6d0e6de628f9acc6c184d83e542944b3b96c8a900a. 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/55658ccc-7b1b-434a-b16a-1e3d456da782.json and https://artists.proofprofile.net/proofs/artist/55658ccc-7b1b-434a-b16a-1e3d456da782.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 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 0x45ff2f2795377ac35bef745d757f0e6c7bcd19e15711f3288063275fee1c5dd6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2283511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be1aec760157b38f2b4853fbe6efba987728d2fc223da93b3e676f7ce733a06. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCGJ2205630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901f932d7697e3459d663a6c748cd8cae968985aae5ba5078e58f2e19c5eeca5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9M2263733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf673a795090350cff4394ac292a2012ccbf1b174f60bfc93f295a13a4f77aaab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJW2319895.
Énfasis Millonario (feat. julianochieff, RF Music & gringuitos records)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede2cf3165ea35cd694894584278fda0887f54d63efb0ecb2f1c314953f0929a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2312833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed4ba116eccdb9aff5c08690445a93f1e23c6a4a94540927aaf1fdea7e49103. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2321436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd099d4ed9a9010d2970be0b40fbbcbaaa5902b2cce513ab3cfa6029b925fceb1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9K2316013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be8ad977019b86afcf106d2c907c7493dd796f4f7231242e42615f823330399. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA72323930.
QUE VIVA EL CRIMEN (feat. JulianoChieff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc485298f288644e2d47482b44306e68ae6fa0d325a947a034e11e06c0f1f60ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CLEM42100939.
LOUD (feat. Piero 47, 3TRIPLE J, JulianoChieff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6979591dd06eb7f4ed5b69d54252cc3fc83f35ae380365eed7fdfbc524925e0e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CLEM42100927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca3945ce64a2b02970d389e2268cc2c833a4327821d311075bc4d73ed43f128. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9K2227154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6860172e231f3869707a0e13493aa1484df8aedcc6fc8db6cf89d9cd2b81242. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN82209829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52387d731a7323fa22f8750cdddc6d078ad17ac19d1e6b56f29848d4ec62ea3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJY2438342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc282cdded284a2deb95823170cca2a33e45578ee3a726bfcb6ca9d510ff21bf1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CLEM42100879.