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 0x8c2d9c3b8e27a976fd5d9f7adddaa6964b3c1864df35db270de641630afd81ef. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a62ef4f2-3f2f-4e51-919d-a4dad1cdae5d.json and https://artists.proofprofile.net/proofs/artist/a62ef4f2-3f2f-4e51-919d-a4dad1cdae5d.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 0x7315879e8df0b0e277c2912287a819c2e4e336bcb731056cd88586e9b2e1ab2a. 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/BCBKO2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0a97c30d585ac819aad7207bd8719d5643f0b387d9a69e37b1c36dba32049. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCBKO2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5db1c3ac6ebb89bea7c45b2fba66fb43639eee2581e39fb3bfbc3083fe8f6d. 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/BCBKO2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de36b13cf05ce07fc1ae22207a7535635a8b5b9a3bf55d89a6482695e9768e9. 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/BCBKO2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8402f268374a021c95d8ad30750d02fe250451439b2eb9cac280fabf9915f9c. 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/BCBKO2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8fee669e181d0d4958a903f1674e38d608a39108ac26738926a9755eb10241. 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/BCBKO2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f94d256c37f32840f1ace55f75ced22696778627a606916a42e56483fcaf70d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCBKO2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dddd5c1e7180c713f6a27e599f005651428ba28383e378a7a6e17dfefb437b5. 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/BCBKO2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d188e30c71c3c136fefe2e70f751e259879540f1cca7199a894ea5033c5d0f. 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/BCBKO2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f212d3a3553b0eff2e484b15e85ad1681262fce77e875588a0f192cfde15c3. 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/BCBKO2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeac6aa5f57cb5ae6cd048271b7f7e9ae16a47e514e91912e2d6f834ee01b96. 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/BCBKO2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0a97c30d585ac819aad7207bd8719d5643f0b387d9a69e37b1c36dba32049. 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/BCBKO2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8fee669e181d0d4958a903f1674e38d608a39108ac26738926a9755eb10241. 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/BCBKO2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dddd5c1e7180c713f6a27e599f005651428ba28383e378a7a6e17dfefb437b5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCBKO2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f94d256c37f32840f1ace55f75ced22696778627a606916a42e56483fcaf70d. 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/BCBKO2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ade0bb3166c938b7fb69cad3da81f2fa0a48b85e88e60b600ddecf75650d2ae. 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/BX4IU2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd095194fd5da3fafd298a04437938ec8e4bb021675ffc4816985b82db9eb7119. 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/BXIW82000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60463b1ad37c32931f074e29b6fcc5ca7eb17f11a455a2be8b9c72a8170a3d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXIW82000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d729eedf77ca2459019016a40ac7f91e949df82802854fb8d79601714b3ad03. 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/BXIW82000157.