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 0xfc39bce6f75fdb87dfb7d8ddada55a9f566ef9417428923cd60964ed640d6bbf. 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/dde2b2d7-d616-446d-a698-1991da849972.json and https://artists.proofprofile.net/proofs/artist/dde2b2d7-d616-446d-a698-1991da849972.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193072b260505f7021a7b2432f53effc440b0ea6747b894cd5c52bb35b9cc18f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ATB350800011.
My Love Your Love - Luca Stephano Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c1e8aa57b4ffb57acc63881d1454dabb8b6efb1c01cba9a7c278110ce8550f. 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/ATB350800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8bfa1e6637f79153f68068e5d3281099e00db4ce95db79b384078a4126865a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ATB350800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2563f55bd44923b9a9a30284b1b04a3a9c3b0ba2de5aa73afbad29ea3d957fb1. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ATB351000043.
Loveletter - G4bby vs. Bazz Boyz Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40a1283151613a92ea4993bb247f3f813ffef78181341a3c3d7545ae6d6cbaf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ATB351000074.
Loveletter - Giorno vs. X-Cess Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732852d1d0d4529b5872ab2ab5163c371e5bbb9548ec888136d271001ffc0cfe. 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/ATB351000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa64e212cbcd64ad4f55e0757d2ad8efed890e8ede99234ca597d22b8024a93e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:44:13Z), 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/ATB351000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6182055aef1ad4e6e1401878c3b1135c11a0c4454be7feccba49da0a2a49b165. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ATB351000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0839069cb94f322c9bb962e581e4f968cb68c6a8c7521f1f3ffc670c0c06926. 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/DGA052245703.