1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0065bd39d9917ec9f43901251eec6944ee5cbebe1d70b6d02ede482a4e6dcc91. 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/b2fc0e81-2850-41c0-8bb6-18357d154039.json and https://artists.proofprofile.net/proofs/artist/b2fc0e81-2850-41c0-8bb6-18357d154039.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96db5b5056d71c54fe9cf39fb8fb246a4030b6d56bac1dbe5f45f0949d19ff27. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/QMVRR1800441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c16d7ee50aebc4fab515bd5673632f34b3c799b5c2d1be141ee85b091824a5c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMVRR1400385.
Neutron Star Collision (Love Is Forever)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f3be0715ccb422f34849aa4197b3088e9df63ef7280f9b3eedb105003d4a0b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMVRR1600642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5923e44030b731140f59f83df732c2135a8bb0058c8a0b56a5bf24082fe11e66. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/CAM460421399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7966946bc73f74b771531e915855247a365c4f9787761de2b7221147adab78aa. 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/CAM461001316.
40 Alternative & Indie Pop-Rock Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54174405cab82e6b0385aa89ececf608035b74188c60e6c9c37a0a3784bd45b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QMVRR1930557.
Anthem - Kids Party Album (Featuring "Yellow")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1061f5f619897cceae47bdb7637b786e9683b5aa1ebce7d34e5ef5909cdf9f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/CAM460801582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f3be0715ccb422f34849aa4197b3088e9df63ef7280f9b3eedb105003d4a0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMVRR1600642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf37ee3ab28d1c791935f8108d615014acf2c5fe66ca303ae5a6f4ddfad8221f. 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/CAM461000789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd899a55bef8368de011efb1f513f253e91f4f974032c99d68f432aba73025152. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/CAM460436832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5feefd09345925420cefae869a0ff317fb680c064857eedfe59825ea363b431. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/CAM460435906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eadf54997033a0dbb007eabfc01339f233c2dd905978eaa3cb4c251b7ae5e97. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QMVRR1402440.