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 0x841fad98ac10067d8c469340222fe9d30ebb3f26e3643e30ba2dad7ffe3d4c21. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/958a01c0-7f5f-432b-a7e6-e12987c66e48.json and https://artists.proofprofile.net/proofs/artist/958a01c0-7f5f-432b-a7e6-e12987c66e48.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 0x68dde19bc6ac7199cd4457b50a61d5c7adca8339a440756a989a78cc25dac337. 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/QM6MZ1467188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a45ef46efd33b6b7a08570d49b9f0161b8e570b749de61d299421cc3d2b3c78. 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/QM6MZ1467185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda404450b3fa4b7cd57df972796656d691e03cfcd338bb2e70b0b75e8d18548f. 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/USUYG1041808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09720fda712600a5b1cffcc9153169f8c7d6819ff29597ec534ebc30649cca30. 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/USUYG1041986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d105eba68760a96f11053d4796e9bb4759650bebc6433d5aed8c53ce0b94498. 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/USUYG1094857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ac8c37699bb958e60939b87f22a94a2e4ef80c11bc6198097ad96730f1d8be. 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/USUYG1094858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cebedeaf7dc311daa12fed0432a101dc1ceb3c514f941b689d055d45a3985bc. 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/USUYG1094859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c80ca1fd606bab572851c4953fa357a347109126b6721a97554aa200058e54b. 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/USUYG1094860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517e8f619498f9ee75dca0af1b467dfd430761ea784405f74e2632a2cb359d5b. 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/USUYG1094861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afe3aa0cdb3bdc07f549c9f5cadaa445f6e3f8a5f77270570c13aefb69abb1d. 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/USUYG1094862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddf0212a2e13f2dbb0c7540e6b2a09f02dc63508f74636aec95946b4ad0991e. 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/USUYG1094863.
Cash Talk (feat. Young Thug & Offset) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4230a4f23945fe790cc5123c34973a4e303a9fbf9199182cbdc9d07629ab8c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:55:37Z), 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/USUYG1040596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8783c6f44c3ab346a57e0fce2555a0048af2c77aaac70d87f2c910ff798b2ae4. 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/QMDA61320729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe7192d097efc553b43dc551ed0ef5162cd0ff8d0b606cbf261c7d60e920ea9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA61320730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa590f92de8868ccd9ee20c20ccd771a75cb793368037941e6aa080fa7024212. 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/QMDA61320731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cc0daad64261b9a9e41989dd1bf523e18c569332ad7e52db2b42a5ab839e6f. 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/QMDA61320732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ee6f5103b9b9f1815a441ac461499cd5e433e0ba941ccf596d743611ae3827. 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/QMDA61320744.
Can't Take It Away (feat. Figg Panamera)