1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4255c56a5ce801b5a32e0d4de61bc5ea35f4cff2429b65472f39f38e080e5f3a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/515cbfa3-af4e-4cb8-9d99-e35ce47c7f54.json and https://artists.proofprofile.net/proofs/artist/515cbfa3-af4e-4cb8-9d99-e35ce47c7f54.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 → block OTSBitcoinBlock must exist at that height 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 0x0808ceba5aa27d880cfd704724501f712e08cacae5b4c9c9cf249878487d773a. 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/QZAKB2412258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48d7e09fef56e5e9f30c3509ae14f29746687123165a72608d763b1e3be219e. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/TCAFP2176523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa676d7ed994ed2ee85581718a2126bd732410340ecc829a8ee3d3aa2bd831fd. 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/TCAFP2176660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59374f209787d71097879e2e5c79ceef8cfe5a30ccded8d33e7f49c9948e09be. 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/TCAFP2176620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa676d7ed994ed2ee85581718a2126bd732410340ecc829a8ee3d3aa2bd831fd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCAFP2176660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59374f209787d71097879e2e5c79ceef8cfe5a30ccded8d33e7f49c9948e09be. 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/TCAFP2176620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48d7e09fef56e5e9f30c3509ae14f29746687123165a72608d763b1e3be219e. 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/TCAFP2176523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59374f209787d71097879e2e5c79ceef8cfe5a30ccded8d33e7f49c9948e09be. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAFP2176620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48d7e09fef56e5e9f30c3509ae14f29746687123165a72608d763b1e3be219e. 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/TCAFP2176523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48d7e09fef56e5e9f30c3509ae14f29746687123165a72608d763b1e3be219e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFP2176523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34e7d4d7205c02353e49f9c73674775a4296145c30611f7c98c46809c15d7eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAEQ2011729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd186ee63edf0bee63838f7bdda2342731d77968e3d9d7805b170f9174f803f63. 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/TCAEI1951365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19431bd4adc221139c5b264d91a3cfc3accf96c8c0c038bb47cee620c84f870. 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/TCAEI1991635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c394b05b6a4bbca87297784c8a0c8259a27e964eb5b9a023a06165c981e86e6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCAEI1991639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd186ee63edf0bee63838f7bdda2342731d77968e3d9d7805b170f9174f803f63. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAEI1951365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3393de773e5ab83e56cf406e4ed294ed6ae4760de02376ee1d2f2b227e167ce7. 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/QZNWV2441688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71602f3a8975708c36161c685e8377682e1d050481ec3abc44cea3d6527e2010. 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/QZNWV2441689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3aaded2192fbc0155c1267b31fc7e0bc15963614800453a1a51ca5b74d97966. 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/QZNWV2441690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb93870cb0b27f01163dde3a8ec2af9cbb374031929e9e9deb5568f594468f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWV2441691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1166fbd193be6e267a776ca2af18a1548738164c7dc20ef37a93a47d3dd241. 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/QZNWV2441692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c7edbc0cefaadd254e17c3588f2e7a635f6bfc964501cbc1624b6bdfd2ccc5. 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/QZNWV2441693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cd90b979fc09d1ca099e5d7ca2b4fd4409df7af93d285b08fb20aa1eb4e441. 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/QZNWV2441695.