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 0x34227f9fc9796f40dc7a3b8a86dc47dc7576c6d71fc62375ecd84ec0480e15de. 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/0188606f-01fc-4fe3-ac45-e584ba274c47.json and https://artists.proofprofile.net/proofs/artist/0188606f-01fc-4fe3-ac45-e584ba274c47.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 0x5fde467a63980b95f1632a8ae6fd1ed4fcd27500e38e01f33ccb83a10299d0cc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5BU1998622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8225a39db2e53e07091811ea6a5dd9aacf330c1e13798de103394c8daa322279. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE5BU1998630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b1cdcf0304b36e5b29c3a8254eef90c30b7af61c96a5adae11c0d08355237d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE5BU1998631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82787244ec77699f79d52675c0f523cc54803e31266286310a3a02e796666d90. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE5BU1998632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b52d47fa8b8808af9c978348d06a386c826b639763e16afc8e61a63d60b7f63. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:19Z), 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/SE5BU1998634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96c7cccb59b1a974468519830b5b889a00198a92127965d524d12225471f48f. 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/SE5BU1998635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a91923fafcb8c9417d7ecc4c29c0a6f2ae10d7fad57ef9ff0515447b3a49417. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE5BU1998636.
La Senda del Guerrero Rojo - Extended version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150e101f40d82da2a999f67898b8185e655778b29fe266f7f6f9754f30cc75d8. 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/SE5751923830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722975c7092d153c757f60f1bcee9bfddd528207db3d899c57a39ffff78bca80. 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/SE5751923838.