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 0x574c4f5414820f48cdef6198a858339924978e80a8130517b888e85602dde9a8. 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/35cb017c-cdf8-4181-bbd0-9ac21811d5ed.json and https://artists.proofprofile.net/proofs/artist/35cb017c-cdf8-4181-bbd0-9ac21811d5ed.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 0xc24b1dd5e4fc349f037aaf6ecf69a6ddb397ca44f501bc60f0b85843b7a3cee7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMKSC1700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36be48c3d5d2abf59bc834016c7b3029179182704328f02e4940fed6975df263. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMKSC1700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a81c6191eb91d0f1548c19e85f0f09a0dbb74decafa05dd79d9a28bd5da2562. 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/QMKSC1700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fde2d52ea4a412c21e474a6902478241e2aa0e7583ed23913c51050588590d. 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/QMKSC1700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbb059f109684be6b90ae65513fe7e362e335e1ed9c8b036dfce1a1a9ab4196. 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/QMKSC1700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99dafbab2c697a52686e354048873866de1df34b2f87e3ca1f59099213cea58. 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/QMKSC1700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617318494f34b70f8c0db88b81dd360c1900d0597c169a9cc81f2ca7bee148a2. 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/QMKSC1700118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e34a41d5fd3344012005f4ac5fea64a0dc608ce7a109ad9a5045d05a16562d2. 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/QMKSC1700119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662c1d4aee706100c758a57aa53354641f5b7785d62fad9274db5e8791db2d0a. 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/USLD91744170.
Far Away (feat. Kirk Knight, Meechy Darko, Erick The Architect & Nyck Caution)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa41008ed8bf4b359a6540d66f0784fda224e3b70092066b540a656ef9abf26. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM11903515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0ee5f9bffee5d063f20c54e8e91b1a90ca25d89ff2cc2e8e88ee1838c2ede. 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/QMKSC1700046.
One More Round (feat. Meechy Darko, Erick The Architect & Nyck Caution)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6798e79857bdd260ab2a9df56e75b01ec6e1c42b70eb5fd73fd1e6d3a8e3660. 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/USSM11903527.
It Ain't Easy, It Ain't Easy (feat. Nyck Caution, Kirk Knight, CJ Fly & AKTHESAVIOR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024b8d2e0eaacd5cac7b1685a7cc3b131818378bba28bd610181b8ceca5158d3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM11903525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e11d6b42005cc526da649dc6b9bc91d619832574511cf91fd429a48b638142. 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/USUYG1202502.
Problemz (feat. Erick The Architect, CJ Fly, The Underachievers, Zombie Juice & Nyck Caution)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3718bf339b1aed1d3e45d499124706101637974b0ae32aa8955759094fceae. 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/USSM11903528.
Bones (feat. The Underachievers, Nyck Caution & Kirk Knight)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43576d66d3e5a6299699715c3b071d9468b9c4bea809d8a46b35945dce4e7bbe. 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/USSM11903512.
Puke (feat. Nyck Caution, Erick The Architect, Meechy Darko & AKTHESAVIOR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d73e3e3c1d094b32de20bddc0f782f5ab99f178f3627cc4d361632a0a39d9d. 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/USSM11903529.
Last Choir (feat. Meechy Darko, Kirk Knight, Erick The Architect, Nyck Caution & AKTHESAVIOR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ecbc3af168ff31c6a3445f7478681d7128920ec2a3d2567655864b0d90295e. 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/USSM11903526.
Left Hand (feat. Joey Bada$$, Flatbush Zombies, The Underachievers, Kirk Knight, Nyck Caution, CJ Fly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272f4fce74725861d9f033a6e9e7a45f0972ebad4195af3ad9b188b9231cfd14. 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/USSM11901473.