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 0xf3c030ce1ff09061c504da57877708743a9f2f04bd689117c5b5cdc01f108b70. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d1e4cef-64ec-4b9f-9ab8-eb1f68c8afa2.json and https://artists.proofprofile.net/proofs/artist/9d1e4cef-64ec-4b9f-9ab8-eb1f68c8afa2.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 0x6fa6f10c7cfef04de4627e783aea7192d8366d984a444a0ff51248ed092bf29e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:19Z), 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/DKY302000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa6f10c7cfef04de4627e783aea7192d8366d984a444a0ff51248ed092bf29e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DKY302000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522d39e6db516bf47437ca6fb2d7449652742a129e2fe38f9ad1f382f4f4dd2c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DKY302000609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc7bc3667a128d0515743835ea05ee6f43b0e32cfc478662f6cdbb487fa543d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USA2P2312396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc058adb9de3ae0bf0cf2eafa7f39f2cc241f9a86413f7fc4450198edc5431738. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:04:03Z), 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/USA2P2312394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa169f05436df73d920c1694d6e4da8542ac563903525a7b76144ac04a8256249. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USA2P2312399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fccf8766a79eef97273ad5207e3fd008f8907a3f794d547e3d65e9a44a5dde. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:30:13Z), 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/USA2P2312395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f4016e9c29ad370e483a393ee330b86e4c51a3b9f910ff31efa816ad123a3f. 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/SEBBA1600603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4928654e2b9a04020648eaabbd5a163986aa3e578c14624a6bc80ada7db989d. 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/SEBBA1600606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4928654e2b9a04020648eaabbd5a163986aa3e578c14624a6bc80ada7db989d. 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/SEBBA1600606.