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 0x5cdd371f8cd1aa3332f7c9ae37c6deb881473835793b356c42e6bab478d4493f. 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/b37fca89-fce2-4828-8e97-f102e2e33d5f.json and https://artists.proofprofile.net/proofs/artist/b37fca89-fce2-4828-8e97-f102e2e33d5f.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 0x70f39ace4a804047e624da7041311014148e955c618b39f2d3795878793fe732. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/TCACM1656603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21246e4a01cbd1580d2fcf13f148228ed66a5e8ed7385f7615cf26fa41e53a9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCACM1656615.
Fuck Wit Some Pimpin' (feat. Mezzy Mack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22bcb0f28a2a72d8d9b603848e81692967d7415101c6c72cf7b6d94c4530e81. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCACX1749492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d94e61f804822385111143e8af45def1fdbb0566a17c1f800a0544a5a6dfaa0. 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/TCACX1749513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a89435147616268bb60ff4e0e586301f04b15e7a4fe181d86c643e35c738a3. 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/TCACX1749518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9a5e5eef1451cf6cd4aa34b5ba2077e9a68a8368b295a6c133cfd1603e7c50. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QZES51972933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849f790a0c5dd5dc385998360ab355381183dd8a36f9a2cd44115d16e1b6f844. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZES51972936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ef4f689b6e181aaae2b878b8115b27f8f4f1cce47907ad1843b00944c338a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZES51972937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aae105a6819b387b7284d4f1506996848bdefc430f13987545117d9c3fe70f6. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZES51972939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211da91091436089420af464961c86224b140284534cc7d1243a61ac37904247. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTL92159002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184e4b36c66d62b920872b9e8539541c1d1fde70a4ba382c36221d88c89e8a75. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTL92160378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d7304696f714f17386a5782f94c01e608125a2600332bed39d394000d66d97. 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/QZTL92143105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba6b24e5a2eaa908b04775e5aa8276fc2e5fe0fe18097470e55a8df12a97a73. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZXZN2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88930a04ef9cc1e5c5229e2f83de8e1ad7500b0d79971753aaf131ed94dc8e91. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZXZN2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa7c79e17d0b10b1ce400592c4cad08b80476f0f37dc39b1bb7949271535eb8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZZ7W2442924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feb1552a18595d695429bf38ff800a65c075fcd70e9ed8b9d7703b6062f04c2. 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/QZES82577847.