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 0x9b57ca32ff95fe8db6324622cc7a8bdc3b8a4e92b2ce73f8374572858abb358c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f98ac2e7-6f67-4860-8a85-7f48859369d8.json and https://artists.proofprofile.net/proofs/artist/f98ac2e7-6f67-4860-8a85-7f48859369d8.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 0xe86d6c7834565315787bc1dafd10619fc3474995d8c8db28336fb52e98e73c89. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:20:21Z), 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/USUYG1105613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5525e13f6383105a8ca35ed31c1886b975a31f0be07c52e3c57b668193d042. 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/USUYG1082772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ec66f5c53be48a2c820cf6e84f2471eacd5890cec96736c159b48f6b420d81. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUYG1215028.
Kill 'Em With Success (with ScHoolboy Q, 2 Chainz & Mike WiLL Made-It)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e0b1ba73dccd8ce3f5a685a9e1b16756e8c1b2b3271d8303b72bdf8f0509a3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM71702241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344fc2962970c1341ffd51ddcb4698b1d6f84090259fb8cc81e63a11e3a07284. 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/NLRD51966010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344fc2962970c1341ffd51ddcb4698b1d6f84090259fb8cc81e63a11e3a07284. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLRD51966010.
Kill 'Em With Success (with Eearz, ScHoolboy Q & 2 Chainz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7305510b147ae2b8ce34ac2bb1968fe835f795368771ec6c84e4b02f524d271a. 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/USUM71818413.
F.I.G.H.T. (with Eearz, Gucci Mane, YG, Trouble, Quavo & Juicy J)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743652ebd505a556defab5208b429ccc6d4b84c6473b4a66f38869c782dfd31. 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/USUM71820109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f7d26228432e4f9c899464bd1c405d18a912c3b23d6d4ba01e6846e7d3ede. 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/QZNJX2022282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9465e0784f30c44ca940e390fb0d819649d9fb223c2f9d67f97732d7c6c08c98. 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/USUM71915689.