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 0xa9bbbd43af158699044e50d4133130aa38e2a830cbb70b401c66c1052ab19dd6. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44e2878e-4470-49c8-96e9-9b5d145c6bf3.json and https://artists.proofprofile.net/proofs/artist/44e2878e-4470-49c8-96e9-9b5d145c6bf3.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 0x8eeadc2e4fac9988cb66310e1421d376f6d1c395cfdee72b6f62c97b35f1eb08. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T15:00:10Z), 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/KRB462100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382faeaca694bb2bf94a82df882655e160a8acbf21f118817b20fdc9599f0dce. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/KRF922100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b88eda1b4b5241bf603f680bb6d595102b2a000e08ac4e1e338a8647333efa7. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:20Z), 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/KRMIM2174902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aea939e00b5a6c910017b487dcfde0ea9eb9c32a847ca09371f6f06766e8725. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRMIM2214170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f93bfd6d6cce7e9aa8f74a3a3bbd8829a80f010b5cef4b45a15f471bfe9b56a. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/KRMIM2214171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a144b7dc246ec8ac44dc12c2b01c7af9726e5fea30dd72fa2921b8d9f61e27. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/KRMIM2237838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4931605b17a10b5c085f1d4569e5b064a768b0864b2fa5ea4595f04a2dd21f53. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/KRMIM2237839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88f66d4e91b200e5226d716bfebe17a9e9bb583c99ab942240e6470076b383e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRMIM2262371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7642a6461fefa5423ea3f168d7dfa8c73b81519be86f963b76d438aae03e3ac0. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/KRMIM2359426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf249152ce50055ac493ee54abe35407b4894177717bb33c7f35696e60486405e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KRMIM2364235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b6a40cdb3b852e0833495ab79215dda9d8ded2b425f19d4cd8ec6a1072aa7. 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/KRMIM2247720.