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 0x8320cb55e612bb51a0c87162ee5f384a38c7c4e5e964f93b03607eac23c74939. 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/9c62aa87-c13b-4e2e-9787-0d926a65372e.json and https://artists.proofprofile.net/proofs/artist/9c62aa87-c13b-4e2e-9787-0d926a65372e.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 0x5a230a95aafa64df1d441972f3d8bce91b16f1ebc436b84544c96efb030d6673. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCACN1695351.
Fucked Up Summer (Remix) [feat. Jonas Hahn]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62320ed9ad0239526b9cc44b51f1e59d2a324c39e187298b726f0f5a500221a1. 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/TCACS1629451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b646c3531201a5d6564c3a084f06b792408b5c515e426acd24b40cf359b5a01. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/TCADM1860577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135c6e9548b3aaa6011c2c3e74113acc349a66a45797b1c1d11e1dcaa7375622. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:45:46Z), 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/GBKPL1809864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c3c1b7172edce599934cfe356e7a03d2c0850061f0c2eb9f72fd03f3d1dd36. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADT1824360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94e7b1dc9dddcdfc9b5da3b4edf1a07ef531f2911994a08ab5c598711070ab1. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAEF1905208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb613dbaca46313b746e4f7180f5de2df3f247c433b87e20240733d668f092d2. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:40Z), 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/QT2VB2509130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244339237c60bdb38f92993c6448b6812c3232dac5af6c80e698997de1d1d8ff. 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/QZVEM2577528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36dc626bb47af9c7a4a9eebd33467e082baa95b6ac688748bde91ce116b1de6. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QT4K32550816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800d5f3edd8301657c23d1a9055fa151ede90c67aeb1bd04578b8d18b635ae67. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT4K42548739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe483d3f346b059a7f072ca43619f4453e6b163af0e456120db3c52a6d444a407. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT62U2541478.