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 0x160e655c1e352d986da7865aa9440f0a5e824b3b4f496b87222c1c8a0da27a06. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/497100bb-6f34-443a-9a9c-21705625332f.json and https://artists.proofprofile.net/proofs/artist/497100bb-6f34-443a-9a9c-21705625332f.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 0xa5763b800e062e48a0b2a7256456a7016ea45d08e05842e0a57da33ef2ddfa50. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/INS7A2480961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8d6d1dea1ca239deef612d0a4f2577392323b5974e54d27af09b07a4a622a4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:05:06Z), 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/INS7A2610662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96711880070706c2d40ebd8a596f86213188e7f17187838902fa8dfdde78f295. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/INF532410103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a1b14a36a6dfcb3bd9afc9bbfa26cd3e72050ce361c9cab710768f120b0bac. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/INF532410144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e9f28dc0d27c8ced2403fe105aae240b106eb8f0ed671dcd7eca3d41b5bd6a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/INC622220466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e20fc2bf409ef2374ef98c7e40cb7e714f0c3f625efd7468b612b6b9e73db2. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/INC622250752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c11d28e4c25d48a4e0acf99793760ca3d9f16ba45030f3069906aee6339a58. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:08:13Z), 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/INC622251923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2c74a951c9af3bf77447bd2182c4412d74d493d22fa7f5163fc39afa54c6f1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INC622253125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf140b301949fe516f3cda4639bc3d6ee43f69cbb8506005d9e7be97cced89ca0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ432436078.