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 0x7c21dccf54218b41a98cac70d4086c1e3f8c5a9255bcf5560e9a6d19f89d20b6. 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/7631e68e-29b8-4f95-97b2-e925d1e3d1bd.json and https://artists.proofprofile.net/proofs/artist/7631e68e-29b8-4f95-97b2-e925d1e3d1bd.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 0xd0c5737166eecf982c56a69fabfb2bf145f1e4d4fe0373d0f64372c8b0d7be06. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTL92110975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367da8fff44181fe031aa08a55f293ff395191f74951f457fd7d20d3bb7e972c. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZTL92129474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df9cf79cd91b657a493c87867f43a33a84c9c12e077a22d731ffa7742b83e49. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZTL92194549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cae34564578563bd61da6ec30f53621749873e2e79da846f32a414f8cedd19. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZTL92134201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebfd0818c3d4922f0658ca4ad74821c21f67f832461fcffc0f9a5f2c0916779. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZTL92193598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd768654392d74a7dc3df2987dc4e17880fe728a65bc4c35a3f741b4827fc9391. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZTL92117830.
Bacardi via sgidongo (feat. Kabza De Small & Mac Breezy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cc5b7cca2846098ecc8588186d630f658ca88141bf2c0bd03eec537784b204. 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/USZ4V2300064.
Ke Shy (feat. Tyla, LuuDaDeejay & Yumbs) - Joy Orbison Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96db5ec22ac457a747039cdd6e1461d44eb793399e838747b1692c4ae462d6ec. 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/USZ4V2300134.
Stop & Go (feat. Msaki, LuuDaDeejay & Yumbs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cbeb1c960ce0fa9a50e264af62dc20b64326ff0bb05335b795a59ec8aab475. 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/USZ4V2300067.
Ke Shy (feat. Tyla, LuuDaDeejay & Yumbs) - Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406866ae9d787b4066314f4d0183598c5f6e0641de9735681680defe4f3ff538. 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/USZ4V2300083.
Stop & Go (feat. Msaki, LuuDaDeejay & Yumbs) - Jacques Greene Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eae70b82cf258a95a2f1434d599b75943afa12cc0acb985b7abe900050d9977. 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/USZ4V2300198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e3b69752a33ac28796be781de64d34af21bf6abe7b25ba3bbb73392b492c3b. 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/ZA6EE2000064.
Stop & Go (feat. Msaki, LuuDaDeejay & Yumbs) - Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaf579d5f564d141d73c60902f21ded75d4e9ad2438e308d1b6dd1e740f0813. 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/USZ4V2300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c9c743e30dcb9778ed6748af29f6e8f33e5bebd4d2eeb0a29da27e41e986e2. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ZA6EE2000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e43495541c4bced0696e59f6f28af01a9b78eb11a4724b690b6992df8e0e17. 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/US23A1536914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e43495541c4bced0696e59f6f28af01a9b78eb11a4724b690b6992df8e0e17. 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/US23A1536914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07280e02182018b7d9296882dc022482c63ffa5abc28363b1f244cd8f7a1b273. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ZA6EE2000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092b5c4852c7d00ebbea3cffadc0c8e2cb92d8b68a2f4f0ea7a40bb5cc3aa3fe. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ZA6EE2000293.
MOST PRECIOUS LOVE - MAJOR LEAGUE DJZ & LUUDADEEJAY VS BLAZE - FEAT. UDAUFL & BARBARA TUCKER
BIG FUN - THUTO THE HUMAN & 2WOBUNNIES VS INNER CITY (FEAT. JAY MUSIC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21e1ccfce751337f182e35d9929c1edd6f73ecc0b9bacc6d0d7c5d4ff75944b. 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/ZA34K2402200.
MOST PRECIOUS LOVE (RADIO EDIT) - MAJOR LEAGUE DJZ & LUUDADEEJAY VS BLAZE (FEAT. UDAUFL & BARBARA TUCKER)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87674fac8e7eb9d561a6e3980852cb898dddd6b1fb6d87d6b6c2dad41b014604. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ZA34K2402325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5f778b84545e10a3a7bee8db5571f5027995474334f275a660e0cee48f462. 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/ZAC012201090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b3ecd31737145e8ea54b1f4a5c4089cb50ed44d07eafa3065408ddd4f6703e. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/ZAC012201092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b4fcdf1db2f88d0b91d8dcdb876706314e378793936d01f6ed05da3cdaebe1. 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/ZAC012300441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845ac8fdfe53d6965f3be4ba12355b8ec3b1ccb93a23b5c3931445cc61efc9fb. 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/ZA6EE2000054.