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 0xdb6c7f11964a7f58ed9b2b97bfb553ca07d94102b6040eaa55584dd7e47f0b27. 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/f0528e65-3738-4801-9616-5e44614c8991.json and https://artists.proofprofile.net/proofs/artist/f0528e65-3738-4801-9616-5e44614c8991.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 0x4247dc1b8c19fc558b7d0a7c6df406c3782c22fe31f2347babc4f936f6237c80. 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/QZMZ92576626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555b3d559008547861eb309ca2f9211d9d5dafaaefcfbe6cf23c6da0ded6f293. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:37:02Z), 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/QZMZ92576627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24616d243f2a590413b60c0ae2b38ddbc620455d0ae4bc9a57e6a93678ec5018. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:43:42Z), 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/QZMZ92576628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b89056b1ca0d08745721abf483007a63f0a60b001e92c5d662dcb8aace3221a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:28:15Z), 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/QZMZ92576629.
Pra Mudar a Minha Vida / Eu Só Penso em Você / Será / A Gente Morou e Cresceu na Mesma Rua
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3922324c306937aa9f88172f9cde98ff2cc55b5a06957b03e793df77e4086203. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMZ92576630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17188b81c89a39847dbd8575cb4a8e4f51ad97028e840dcac554520aaa97f8b0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZMZ92576631.