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 0x7352b7e1e211241a60c221146350ade9d17b21b5a54ef2ddf2d10ee32ab62077. 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/f35b2777-a51b-4277-b336-b286beddb44c.json and https://artists.proofprofile.net/proofs/artist/f35b2777-a51b-4277-b336-b286beddb44c.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 0xa286a43dc12bc88c4860694f4621ca4c5761ce32dca49e7d2b6a2e0d93e61be9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPM552000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d210a47ea73f98165c21d3a89da77cbf6025123dbf82bbfe60b67ab3a486880. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:07Z), 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/AEA0D2072067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41e2079abf306047e7b86dcac87ee4df354bf872053735e4024e17fbb8f624e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:24Z), 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/AEA0Q2100798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d18a5ceccb0c74abcb841da008c5bde167e9eb4761527003b0b42e943aef14. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPM552100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa093da750bd80cb448dc7b9482a29fc416fb4a3c4d4900e4596ddfbb6b25af83. 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/JPM552200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8dec20cd7117964aae03dd62c14d6776603092f4ee579b4da60241f882f687. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPM552200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07100fb9131b86b9146a844ded6a4c37d54bb2927302ab6b530991a82a8d393a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPM552200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c7878f14e2c90835620231e6e395aa7a3e029546a7d18a7b27b51c20d325f9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPM552200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b73d3d4b9e093cad680df91190ac0d3b8e1978c7d0883764845e9097a5d872. 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/JPS802354271.
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