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 0x4ce8bb1bb40f778a70385cb2f6b80d67f1f1efdb9725f98f930963bbe828b67c. 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/82619252-a975-4118-b0d3-b2d32871350d.json and https://artists.proofprofile.net/proofs/artist/82619252-a975-4118-b0d3-b2d32871350d.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 0xcad8301a8868bea1f0b3fe879ab4442e8904c7c4cab7f608be9f22552d4abaf7. 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/USHM82332206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d97d33446404c19f07e8f1c79c8c10848515a2efd0db2806008eff252d280. 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/USX9P2319183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7543005edc532c889c6c8584e00946bf9e3c53f2fe94ba15d2681f66d175e8ea. 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/USX9P2319184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52952636b42f507023a7852ca93ad4f3346e56208b3845162a077653fe195303. 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/USX9P2319185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99a65ac0a69574062bee3a88f28dbe125ec3f271aa605c64e47ccabbeccf9c4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USX9P2319186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c01d636eb636e9eccb35d67405e58fb95e0ab0c289b29bb71ad0a6e83f7472. 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/USX9P2319187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abbac5dba08c514c8f924b224766dfa6651d02de6a26860bd808b4aedb9b7a0. 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/USX9P2319189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3441b623cacc43f7208d6f07e4c1cdd06514b9ee510518acd6c4e14df5c511eb. 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/USX9P2319190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde485cac0ad1d48226078cfe6b2728bebe1808811d8e3aac6d75082982f3e928. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USX9P2319192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a24a175ab4ea8d9f3fb25aefecf05dd07e054642be324bdcf05171e7ad95685. 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/USDY42335528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc3f9486580d8dbd53e71fd735a4f124c5204143ad08cf477c8d6e2107cbfa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH2385978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d111f7c67f16c5744cad9d1aab9835bb7733f7780bcb87c175e9ef3050663a. 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/USHM81880464.
Quien Es Mas Gangsta (feat. Someone Sm1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd84e18612e7a6ae996452ccfbca59f8d1780524bf47788c3dd16376259c087. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM81501171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a29717e1b51e79d5d8d434da1d0489f3b6a41da3db5e80f61f8e0faf3a30590. 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/USHM81680749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafccbe3ef8a9c28de5f471fe25914dc4970f23102be4e5a547c61a652f5484bd. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/USHM81880461.
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 0xb9539785686ef2553b1ea698c16a209cd49a4c1e1fd70f6a2e890f7abb07a495. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:27:24Z), 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/USHM81680748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9b5cd6219b9531134e414049536a797f98529f09dca22d2280bae39cfab44f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USX9P2319188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cd1a464264691c65037f5d0bc9fb9a404430484f8b7272cb2abc3e57aa4d10. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USX9P2319191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ccfb5e6cee6354820eaee81d8e2067eef6e8f931fea52c3c034cc7f52fa292. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USDY42302201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2f102c3bb4855d8cca59a8c866d195eaa4069b3ddd3e57dac628066bf7b5a6. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USL4Q2234656.