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 0xc54e0e32ae62a415718e0b76ee310564388ce0b44db0779abec6c54d0a629327. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d31856af-9435-4561-9444-c2d36254683e.json and https://artists.proofprofile.net/proofs/artist/d31856af-9435-4561-9444-c2d36254683e.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 0x7d7e4ae0f7154b5b3b64692341e64066844e1e6cd34944e483c3330957a0d12f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA62288988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe640d997eaa0c329f8e7f626a124696f6d6c1ee1e0a0de2943aafbb89ecbe1d7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFME2244795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847097db335889c4828250083c181c1efeea4228d208bc6b6d5c72e0e7d1076c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFMF2218168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c951b9e0d5b4462d5212ea1095fc80fd4c4e4b2309633e67b96fed1b7bd251. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCACC1477557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d17c00298b0ee62f46d3be53300b5994014a6e7d41b939b51155a6043646a0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA72282975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94659179e8c4f588bd40fb16f5f492687ff8c6f1fa60736075009d6b6ab4c685. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMDA72219400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e4683f3b4bf9a0e15beec178b26fb62a26823304606ae6c58803a0db5af8a0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA62227680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b4a21fa77b59c97fa36909914bcf370bc1743550143fcbbea4c9544cc1f512. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TX2020538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e022b542945817c7e1d3f5808531f010b6e6227ef1b28badea46dacb3fdaab. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFME2360296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006c104f87187a6e0895a5c90b7426d435e6c333b8ef5a6aa5a77fc0a1ea0706. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMFME2357901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87b2f19beb52ce8218cc930415b1a66c1c4180661ab2f29aa3b81c266ed367a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFME2338346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0acb0d49fc7dd52f1d8cadbdf4ed19803fa0147abca851e412cc686f4ec626. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA72363883.