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 0x3dcb4609c8fe1bf992737b8af5aae1d23edb88298a444505ed54c9bc425e6178. 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/20109140-6f9b-4b5e-a1a3-20c8e8362ae6.json and https://artists.proofprofile.net/proofs/artist/20109140-6f9b-4b5e-a1a3-20c8e8362ae6.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 0x5d39c4ca9a84fe7c1a3fe27b014d5e3f46d09a4dc684b93f33b7d7cbc8b11ec1. 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/USAEA8169171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a562c947514a4d35fc259f634bfc8bea47c61d759138ee68ca976efe9ff445. 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/USAEA8169175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbfdb976bdf6119a4e2a0f98be60417ced48ec1e54da3c8668c175ba9b2bee1. 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/USZEG1500647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d97ea5c73ea576d63110bd0561c721c8837988e4682db678a10d66f15806e6. 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/USAE81401472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1002b1af9c1018a6acb310641d84800f6156cf069d509375cb4e1debcc076b37. 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/QM6N21576677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ae7221998ea724cb5bd8c7670b15eae241894810280e742bc5f4f68882c60c. 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/USZEG1500654.
Pour Me Up (feat. MPA Duke & MPA Wicced)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159b546019172c0736220b4ee6aac9af8668e6f6c49420cac43c9de868458c66. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USZEG1500745.
Time to Get Paid (feat. Jose Guapo & MPA Duke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8a336a58db9cebd21cc5bf17639d08e808fb836883f1545a41cb2d48d8e5f0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMRSZ1802348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f3b11e6898de87e14add726f1de4e60260b952ab0ea9f2b62922123cf1ab7c. 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/USZEG1500642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a944d6337a6e9ba51e33c53f08bc5c3c06a55eb63d55635932205faf157056. 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/USZEG1500644.
On the Way (feat. Young Thug & MPA Duke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b697dae30f9b9d94337787498f54eafabbe5ccb5923487d4dd5ca633748325. 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/USZEG1600011.
I Can't Be Your Man (feat. MPA Duke & Young Thug)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8883cd0ef3b8c41b01e70f02307c0eba30905a56942ee0e3e729a21a3db0c4f4. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USZEG1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c352fa0c1c37852c5fb6c97a31b8480b3185bc6205e138faaf652e1cafd0d81. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USZEG1600019.
Every Night (feat. MPA Duke & Jose Guapo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be144208b5a54d94a80b14a5708a9b32fb811e93bb12f3f5546142e2195d3e5. 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/USZEG1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3d3b9224f1961845296be43fe9de39dace6a80eb73e1eaff337cacc1682be7. 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/USQY51225205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0a9368f67a04c4c3279da4f7b5ad019ba351ac2d20e3319cf612ffc816ff57. 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/USQY51225211.