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 0xf7311e02354344983aadb9e1f4ee2130fb072e64f5b6cd856cdd97cae2c2cb72. 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/1b4c25b5-3454-4d3f-97f9-7114b3f80842.json and https://artists.proofprofile.net/proofs/artist/1b4c25b5-3454-4d3f-97f9-7114b3f80842.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 0x1af6870569acad1841387ca41bfb441ec606903d924cdb28d22417ddcba3279f. 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/KRB471402175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e23593947b8a95d9ec0d4972f3b138fe1fea7ee14ad319738fd6b96f741dbf5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRB471402202.
First Love (Original Mix) (feat. Yunjin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88387a73d37c3b36bf4d149d7bf4fed935d698cb194728b1ab7004c70bcbdd3. 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/KRB471402107.
The Best Hits Of Clon 2002 (The History Of Clon 1996-2000)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd703ee9642318590600c60b3fd2a3d15a112f47ba6c2cce904262f75d4e9a7. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:23:54Z), 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/KRB471401789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580a3e33b8306120e4d2cd3ed809c68e47933cfe3bb619c66953f93727d1cd8e. 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/ARF410802086.
Ore Ore O - 2017 DJ Koo Hard Style Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a003c58af1796671afbd2e5b86751bfb41551a53478a4d7ecbdfe1955dc027. 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/KRNAR1704468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580a3e33b8306120e4d2cd3ed809c68e47933cfe3bb619c66953f93727d1cd8e. 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/ARF410802086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580a3e33b8306120e4d2cd3ed809c68e47933cfe3bb619c66953f93727d1cd8e. 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/ARF410802086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce98121ec90d7687f5b146433a97e75ff3c138a59f3c90078de326ce27dab1a. 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/ARF410200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf493f3c2558769da9dfcaafbcc552343bf7d12508a70d702770c98e91cfdaaa2. 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/ARF410300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24daa3bb25d411ae41cc87cff02ea99fdd4ebbb1c2188ebc4ed5dfc7fdcf181. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA382100396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692ea73bd5d47242813db76a75067235eb08072cc1be5ce5b2ce5b85cde5eaa9. 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/TCACM1605733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850d5c1159dc6fbc6acdbd192d1c1aa6804953a715a9834f0c44d236f8ffc843. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/ARF411701407.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11efa9eacb82d6fa210c87612eef54c49c19b1eaaec440cd6e74e2f0929f47d8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ARF410300140.