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 0x82cd9d23e2c7eb3b0b4f2ba6851d0d52e023f3540cb3f9a286a21a94a1a10668. 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/a57c4eca-c296-435d-af3a-aeb7e9399fd9.json and https://artists.proofprofile.net/proofs/artist/a57c4eca-c296-435d-af3a-aeb7e9399fd9.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 0x3c31622dffe3c34b79dab2978dd76f91883d9ff0cc013c47e9663d892b7ed366. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:30Z), 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/SE3MN1200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bc94f5e0268d4c61bd22a0c01c51cc58848bcea3a426d2bfe670b2823fcc16. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/GBGEY1300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ae0ee103313391378d6f4d340f52f3c862fc40ae92f289e3fb36d4fba2953c. 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/SE3MN1400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebb9362b5e2a5960f4ce3c56b9e684cb9b738d656a5f7c843ac6df056d8fc6b. 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/SE3MN1400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479ea843d9f4093e47bc6d5a35d65d9c148bbf6b8513f93f4429ed0919d8c636. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:18:27Z), 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/SE3MN1400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda77345de0700b209b26665a330ef73582850414ae4d5b3b018aface6f474b41. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:33Z), 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/SE3MN1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda77345de0700b209b26665a330ef73582850414ae4d5b3b018aface6f474b41. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:49:30Z), 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/SE3MN1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff76b298ec4f0d234097ef350e5aa070b43ebf1fad1f9d36ac77ae0782815e3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SE3MN2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d67efaa9b9aa0902d62f1879b969d6ff61450a1b78d35505cd653763359ff30. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE3MN2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a867f16cd8b1fb921c2e0590a1aa1b5b143466d4fd47d44564632d4c54ded0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/SE3MN2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f8bd81fffb3cf9edb699cd975caeb834a65448da0caf32fa101eea1e0558dc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE3MN2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643dbf8b46eed07bc7e480c5554c2601395ea62d26b09f68cf12ddb55f995c8b. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SE3MN2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6f88c031119f1b8c9b5d119bebce8f8f9bd30dcdea39ded99f72ce6bb29ec1. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:57:35Z), 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/SE3MN2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a40287b1c9da0d24548a7ed42ae77441e3e3f13863c696b660810a202ee3ac7. 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/SEVUE1701302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ae6ab65e89189ab79429f44e24d59f9996446124ac72f5e4ac47b71e24cf75. 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/GBLVL1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cc42eb2f758325be5dc6503607b7b2a4abebbc37500aee3b370cb3e366131a. 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/GBLVL1700021.