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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577d82dae6ec0aeee66a62bad3596afe6898b43c963380b0feb598c00a8b0d4d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36d30199-05de-4345-9bbb-a59fd17540ac.json and https://artists.proofprofile.net/proofs/artist/36d30199-05de-4345-9bbb-a59fd17540ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Reserved (Your Password Behind the Velvet Rope) [Music for V.I.P. Areas]
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ebffba9443ee56791cb04a227d626da251bb9ef3a9a10462742f3b8cfb6ebd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITI020300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b859fc9b70a9e802da9dd8b75bf946332c3ff737c429edbe59bb1fdac37b44b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMCZ0601965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ced6908112e956aceeaa28f4be1f792711f80ba4898f93abc0358914354264. 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/GBMCZ0601968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7993bb87c4257d15388c9e87df600cc616f04e86e50d0c6d36d5216b0f6f4b. 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/GBMCZ0601969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ff6a986257e6bce4f412611ed635dc462d10bc6ab05cb9f208dcbbc2328b6. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBMCZ0601879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648c7f773e442288e144f6609c17384cc9eb7cb6ec6c0556ca97bf4e3e4d144e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBMCZ0601880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eada16973d655cd8fd377b28f0791d81501eb61a1a603b879a128aa95c0f568. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/GBMCZ0601143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffca132aaac73d8d8d8f55997cc73cb23b876496f11ce9949b95cea61f1cd2b9. 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/GBMCZ0601605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bfc42f4e7b2af7c82a681847d4c96655251d9139497d2568be8f032e087e71. 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/GBMCZ0601587.
The Crystal Collection (15 years of Archive Records)