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 0xbde341221c6cdc4cb6ff0293654c8a48e1c7b97ac61834d11e41e34b0f5dc7a6. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9447f36d-89a7-44c8-b4cb-d49e2a41dd3d.json and https://artists.proofprofile.net/proofs/artist/9447f36d-89a7-44c8-b4cb-d49e2a41dd3d.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 0xc063845daf447441e986b1be4a204eb49b530cf93bdb416f1e0cfcf20fcad73c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN82199931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dcbd90cccd914bdb1c41ac0f40579995322d6aa9a9f35abc22bdd60a645281. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEP2074920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5282403c7ad7a79b5bfa672d15acf71cd1da69525f032c7d4059e7ed85c039. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZES72133103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ca5e3ed6326733a1c6d46ec9207b8a4ec4c57d17fd0b511073f3e081a8ffc0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6H2129048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07763ac65ecd2efe2cd49b1654e1c6b539e9a83ce00fa303cdd233da6abd6695. 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/QZK6H2129049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255b93f7dc07861f7740eb50999318b26fef9a7946fcb4b9c3243cb99a229f64. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6H2129050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1ab9317cd48f419309985036e51ad16e4553f0fe654297fd244c7ce55c163a. 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/TCACM1647404.
Define the Relationship (feat. Zene Smith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08ccab0270d658e2ecb0ab1799e1a6340719d8b5c609e0ea2ce5adedec75b06. 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/TCACM1647405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc063845daf447441e986b1be4a204eb49b530cf93bdb416f1e0cfcf20fcad73c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN82199931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5282403c7ad7a79b5bfa672d15acf71cd1da69525f032c7d4059e7ed85c039. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES72133103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dcbd90cccd914bdb1c41ac0f40579995322d6aa9a9f35abc22bdd60a645281. 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/TCAEP2074920.