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 0x1b9e7a569cf48736de16382fc19487cabd690ac732661e707aae2d528cd6e366. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6aa10431-288b-4015-8f3d-224184e9d0c9.json and https://artists.proofprofile.net/proofs/artist/6aa10431-288b-4015-8f3d-224184e9d0c9.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 0x4b2a8989f39fa948eafe808b5e5e5bdccfca64cf070aeeba08272ea0bf54852e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:29Z), 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/USCGH0718186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e8117fdd6d934bf862f2647251b0a75e073182ca14f89ad7afea052014f7fd. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USCGH0718189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5278683e3f73324b45c771ea7618f555bd28d10ee85d52a2e234d2fa6c2182. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USCGH0718191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef91f8cb0aa5a0bf8b8a8aad4ab514519814914d8ef01d441e5d99fd32355da7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:29:51Z), 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/USCGH0718194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf42060503f356f9eb8ea59ed27f0973c61a87519cca48364dde43dbea9ed77. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGH0718196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0bf32fcbe777cb07f1c61b842a3467ac1487679d8f7f4839bb383ce5fce1e6. 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/USCGH0719290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13887820dc9b0cc2ef4f38dff717335ed1a30fcbef6803cc51222436ab2690a7. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/USCGH0719291.
On The Street Where You Live/I've Grown Accustomed To Her Face
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e3d07f81ff9ba5038208010c82d01d087d1cb3516c8c04b7c6409418c0fd68. 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/USCGH0719297.