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 0xad745236c48e81f35284ce209fc67137110efc26b2ec05c3684e742026240ef1. 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/892173a7-5942-4879-aef1-5e7ec26b3804.json and https://artists.proofprofile.net/proofs/artist/892173a7-5942-4879-aef1-5e7ec26b3804.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 0xc01c7884f712435ee3bc0bc63318bfdce91807e1dfe2f2440cb9794c84de4acc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USQX92202209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1562b08b90eda439748e1d995be16986037425648fa88ebb0e0dcd772644b5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USQX92204642.
DOA Anthem (feat. Mhady2Hottie & Dougie B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b41546a9e72c4409ecb2bfeac09ed94e4208da576c95749e66e8e5081e2d25. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USQX92303335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f84573bc77ff58711c46c3ca8256c62145dbd96dd25b75b0230ae5207bd04c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:18Z), 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/USQX92303338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faf87cd538fc78e5c6c65ff52ef45da52ac039f9be7b9ff64e7e7a6f908b617. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USQX92303339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda703b234cfd235c894ab87e774d12d57b38b9b4d398cb4b9182eb0a2bf3809a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CH7819573515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bc1d96a26e31d8cec310a79424aa5d7d62f337fb0ff4132b9d423cc8924dfa. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USBEZ1002951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0d53dce67e054f17973a689fb082d7fbf661ad6efc81cbf8f4949cf3104211. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWFJ2546425.
PROPELLER feat. Set Da Trend & Fr33Bandit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2730b76917d9009fa29a50e60908d0e46555cfa5ee6f1fdd4762575c4b445ee7. 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/QZS7J2363473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b75b226a3da9c02df1a6ed9ab6c38bdcb40dd0de33a7f53e120db29fe506136. 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/USUM72216218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b75b226a3da9c02df1a6ed9ab6c38bdcb40dd0de33a7f53e120db29fe506136. 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/USUM72216218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d3395ec03e08186a067aee21fe13aa5ce917ab91a6962328be96d112d18cc9. 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/TCAHP2319620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a76c8944058c4637ca2bcb29344b242ba35bc436617559156302a81448fbd7. 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/QZTB82361815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc35ba8d46486a70ae9df7dbda2f4c828866528419156df18129fcaf7ecf74c. 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/QZA742423882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7344f314cf47c41186f150ceeb7efa1cafa956e6e4c58abd0a0a14bfe7f84192. 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/QZTBA2274779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2cb0dbc862ce036f0f0bab2b8b16b804991af9943b3f90c686e7cc2951eff8. 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/QZNWZ2110508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dfddef4d9d6dac9edd4bce46eae0d05fd60ae8b87f5d1555476a6fd9bc5b70. 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/QZNWY2172905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a602410e94c83bde6ab1f5317587382ceb6a4d55062eae504c4921d46d7e87. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZS642389040.
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