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 0x17f0cb5532b95deb66bdafb0d1e13fa1545379cf8255ff529c4c3b021e305ed1. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f165c042-98fa-4142-be0f-591496c2e1e8.json and https://artists.proofprofile.net/proofs/artist/f165c042-98fa-4142-be0f-591496c2e1e8.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 0xe5cd117efc0a09688522db4440b187a17707cb2e8e9892ef59fb80e4eb29367a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71806818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70f88687cf0c763bcac7bb5b2c37f3b4cc02a9f202c1f30f9aa0a36732f0510. 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/USUM71816867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62760a6d88235f33f1111c36d1d7b7b499683e80c96a0e1a2d4f733e47103618. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71817301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662a6f41c15769acd4d4f74bc60c6646eab5bac81c94133b822c5e336317c5a1. 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/USUM71817304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757b34e6234e840c33b56a756706ea10e3c4bbb08299e0edf1643b0cd8ffd109. 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/USUM71817307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfe8304843f01a1a0a7032cc24867d97bee2616750ab9e249e41c734c2401a8. 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/USUM71817310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6793832fec1e71be683804f9753853c8976fb611d8053dbaa42ad6808526b6d0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71817312.
Surrounded (feat. Chris Brown & Wiz Khalifa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ef8ec40bb2ddaef996e29b0ad01dee3a0d68f3a161eb014f596468f4d5bf5f. 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/USUM71817630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4c2aca0de598e87cfcc7cfad28f7d0a8a74879a5243e36ce87723e8bcc753f. 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/USUM71818463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944a381f0c064dc72a9fcf8a224fef66c9fb9b5b1e00f143e8cdf14d89e0fa2b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71817320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ae2b12301caecac51c8edcde4e6a02dff63056b0f8e538ad8038755fd96ad0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71818458.