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 0x4dd7536511b67f6edd4267d10b79b85ba0617ad9333624f60392aae984ceac54. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fee02ac1-58a2-4314-b472-2e849c78ca5d.json and https://artists.proofprofile.net/proofs/artist/fee02ac1-58a2-4314-b472-2e849c78ca5d.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 0xeb1597ef4e5334505a5afce99cccd7671b592be23165c89a3c3f5d000d40f68f. 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/BEV902200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b94ab57d7c909645da50fcbff542aa80bc789346535355c4aa891ef310dbf9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEV902200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38512aab18418a369183a4e961ae9e0d63629d00217512ac01f9aaa4bf9a5ea1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BEV902200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e198b128a021495ea1e2f91a08de361b2619b2484214454f7b32a1bdc84eb8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEV902200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e44bcbecae223915f2502fe80b1e4cbf810c4195bcf73f03d03a79dd8e46ae. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEV902200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576edea5e24216ae3bd53e1d438f546f8908bbc1b60f1b4130e3426ca7ec4c18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEV902200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685915c7618ab83c0934479d2eae9eb5f3d3af948fb34fa77a668c518f0aacbd. 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/BEV902200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1585fbb9816f65167070555ab0eae04e8bde678f50361f2c679335f2820013a7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BEV902200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785d2267e6c55dd2a5d9bd3fddf708570cf184e46429356187b10be8c1c076a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEV902200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c50cff5485d75cfda89db7e293a493b2be6c4e8ece7b0f3683ed354952ed5b4. 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/BEV901800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e135dfaa0c5fc8a3c62dfa9ba140c5a8e453329fcebb817847b7487dcbd21a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEV901800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72872b69c26ec7cd4f523c1adbbccf7ffc68ecaa5007ea1b4126bb5512256158. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEV901800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be8efefcc7c5d258275d408c459c79b8f7184f0b752beeb5e8f146f52bb85f1. 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/BEV901800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7459f77747598e7cc15734aa3a6cc91e00bbab23494df3612568796087491b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEV901800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1f088404203048690c218bb850236bc1bc1ce5f33ed61439244233b483a939. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEV901800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eba090c2b25c7da5202b81a8182287929fc253bee48d28e6e650667692b7862. 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/BEV901800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9786496a00db2ae813b6b08314a5c51556e9d81598a140ab3100ada031b8433. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEV901300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd297ae256b5ba429cab08b334eed9393bf54c3cb2c7687168b6d648268f4f9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEV901300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6b6c50b67ac3949910861dd4ea727c4de1dcbf8a407e01387cfb0d6bff10c7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEV901300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1597ef4e5334505a5afce99cccd7671b592be23165c89a3c3f5d000d40f68f. 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/BEV902200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b94ab57d7c909645da50fcbff542aa80bc789346535355c4aa891ef310dbf9. 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/BEV902200002.