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 0xb98dc2e84ef78f358ad132e9aa59d0ffecd01a7dae8d03818f728b1f5ac4320c. 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/869a8f06-4c29-455b-9ef2-91a5735f2e1a.json and https://artists.proofprofile.net/proofs/artist/869a8f06-4c29-455b-9ef2-91a5735f2e1a.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 0x87f8e6999a261293adac6c8dee2e2b799b87a0a3586c959836cd941e32181eb4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZPEW2560456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6db2ab3af0091ad4e2a1ca2b571fa2fb52177824f8efec30b007ed5ea682b46. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZPEW2560787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4edab0de0dc0c266e5f35d6256001b962c5d2c62fda3965e540885ce21d850. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZPEW2560463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcff3d094ff3d04efc02d12e6b2eb6ae74235bf59d1deca8ea6a277cd8590f10. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:37:50Z), 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/QZPEW2560788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb056d24d6fe64411408e6b53f6576915a1c44e5d28ce5881bfc0a84609a636e6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZPEW2560790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc33ba525828be3f3da6c9f38c2dc859ff15d1b84552bf61eae08d05c7468a06. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:33Z), 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/QZPEW2560794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9193384f2be0817f48e4ffbfb22f81d8ea78d8c947acafde47693b31e876fa. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QT4K52511172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf811fd764cd4e36d8d8e38e85881d64bc4e9ddd11d11ef54f090c4eada5f088d. 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/QT4K52511168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e21247428db17cbacd86a3e8ea49ea35b4c4ea466a3049f9ce04024bfbeca34. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:21Z), 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/QT4K52511171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e47e009343e49b8453c9b07aa2d644d94704e01b133da866254f605929cd17a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT4K42597087.
KTB Freestyle (feat. Dj E Money, TTO K.T. & Taylor So Made)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dabbaf51c76a5beb99e870dfe8ebcdac4d89be67d366228e6e58fbacc60f40b. 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/USUG12407975.