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 0x71eaba26d12b1de113466294a7632bf5b40ea7cdd78e2448e6da4e842d0278ef. 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/224ed184-7d41-4e4e-950d-b2bf3cd61777.json and https://artists.proofprofile.net/proofs/artist/224ed184-7d41-4e4e-950d-b2bf3cd61777.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 0x7fff90fd7edd738da714db75351aa9d19df8848afb4ee38ec57d6033b0338b8b. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QM6DC1996928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadbf70f1714b9cfc75b9c8c4333563af3866ca4322eec2b37334a8d392f4384. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM6DC1996632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadbf70f1714b9cfc75b9c8c4333563af3866ca4322eec2b37334a8d392f4384. 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/QM6DC1996632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46f22889b36b76c3ae80b2a671a4258c605e14b624e16c6d50679b029bbd97f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM6DC1996638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10f220657c4926b50f344dc03dbf86e02fd9542224ed40c4a9133c1c2edf0b4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QM6DC1996949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf643f9808b0835e78f0364535f7cf49033b99a363d5fb26cfdc883c42877410a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/MX1881500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b39a937151b833f58a722ba561bb80cbae6fbf8f1e64856732323684cde8166. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QM6DC1996842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c13f3d9bbadd6a51cf428837056046eaa1cb2a3ef3ba303fc18197a99321e9d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6DC1996844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ff47cfdc051c3ebb7938509a13c1190e07c7f2ec8960d5da53cf91d5948c7e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QM6DC1996847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150f4ebf37859c91886d53d8b6f85c3d085d1920231c8287874743aaced0b3cf. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM6DC1996850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5b85281259853f05ae5690ef64ae583a9beca0df127e3a27659520a7fbea61. 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/MX1881200074.
La Noche Es Tuya (feat. Gerardo Ortíz & América Sierra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d7c40f3af6c229e55c2e745350e4a1dd6f254fab64600ca5ef0cb4ccc919ab. 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/QM6DC1996620.
La Noche Es Tuya (feat. Gerardo Ortíz & América Sierra) [Remix Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69161ff93d67491cdc4893a0b4a59e8b9c57fd62ebbf08fba69901d3432f5af0. 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/QM6DC1996628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f17f9a0c3ae66cf20c19413e1d6592def3911f1c7d17ec23ae206c04efaaea. 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/MXUM71501802.