1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2367285ea87b824270f12ce4e34bbb70c5c74f30a193ca9b7ddcd5631adcd246. 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/54a5233d-99fd-4d3e-9fe2-97c7951f0e9e.json and https://artists.proofprofile.net/proofs/artist/54a5233d-99fd-4d3e-9fe2-97c7951f0e9e.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 → block OTSBitcoinBlock must exist at that height 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 0xf321ff24ec8d5cd077b73032b38fbf62c3b7e443cfb3611bda87552c599afa31. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZFZ41959335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020c6ddea6d21cecef32a8f176484e9c2aeea1887f75ea202eb949cb59d3d456. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN62072454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37da40f40a18787962f884b3be113d70e35564d05a05d3ed55016ab30f872c7b. 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/QZFYZ2139295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4a5d4ab75f988ec0df44c2d1922d6e98e15216bb70fc056d8fc0ca9c66c310. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:09:03Z), 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/QZFYZ2139298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa456f6aa8ca03dd1be159ec83b8bc2eacbf3c93e3aaf715b1fe452a0bccc3379. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYZ2139299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d63392dddf0a9bb297476f66d8189b69cd95901b1b20ab5410809e543394ad1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:23Z), 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/QZFYZ2139300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165a05220ed7ca757ce9a313b536e8507bf9a6f24114e718dbd34bb38529499f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZK6G2133033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030e518175d9088bf0df6768d490d9c6f35b6402f894194027b0281e4cd3dd05. 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/QZFZ22209252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69033efd9d46c7b20facef80a5e5c80c069cff236304cb80fcdb74b16cd4c01. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA62387900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba0371720417f3b6b36560552c3f96aaa3b877f549b7d8c0b5ff40b70e5f2b9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:52:46Z), 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/QZWFH2489243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509476f21a220af022ebb7798b658138b259ca57b1c1b131f05dc265caa3dff6. 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/QZHN82210864.