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 0x75752b630ffae4071516630e2e4f936e6e893d071c8e2290a14880db22767259. 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/bb63f348-5fbf-4734-8cfb-cc1fdaf928e9.json and https://artists.proofprofile.net/proofs/artist/bb63f348-5fbf-4734-8cfb-cc1fdaf928e9.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 0x77ed05261e74f084eb294b8bc4131d914337db58027e12f1ac1c76de0dc8a1a1. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/CA5KR2016844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90859ac55c40a7ab2775702dd155996948895f3e8ffb537ebd01f0915cac4ee. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/CA5KR2016845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07d05054319a24e3ba8df6cf58812760f875d1c25a4f4fc686e2e18c5c2ba51. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CA5KR2016853.
The Infamous QB - Still Cooking (Bonus Track Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95419ecb3934090f9f5f59ccb2641cb17c1ff92fb0b567c7e5665de349aace7. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/US92U1706676.
Bosses (feat. Slumz, Man-u-iLL & Street Genius)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5464deff459e1fba1a918f83de55ea245a450c7113664404f315bb5fb4d82f4a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CA5KR2383628.
Laughing to The Bank (DJ Mickey Knox Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dec49616978dc783e46ca58cb58aa30b796dae16a03000abebd00de4161afa. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/CA5KR2545151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce99ce9d9876e83e852a57d12bdebb480d37558f19ebed04ef5966b19c51a0b4. 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/USUYG1267299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed761b6aec5a98fa441ddee6cc7c4b01d4c6c29369b3d27bc0193a7f8f5c121. 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/USUYG1151197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341f44d19d2831c5737ed472306760298869b43c8870bc6f6169dbe266eda03f. 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/QZHN72203745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5016d1ec757930c5293e6726eb8c1683db4107c94bd76a75732bc6915d343b3. 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/CA5KR2014530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bedc4880594d6b6b12b0969a640c64852916b7d98a142be8dba6858a5d574fc. 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/CA5KR2014538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3046c496c3deddc736b86f4b1932e623947b63fde2b663442e1449293a87a6bd. 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/CA5KR2014539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3233bed7d0b0b41bce4982b44e279870602e88c0032af698e17f839316189c0. 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/CA5KR2014540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40552b32a7b9d5677cdfb184dd1212baff4eddc3815a116279d9bcd1134055b. 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/USA2P2438696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c16cc8121acc615306ca90f2c78256477ab443b49fd66188857680ac9756f2a. 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/TCADC1781610.