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 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 0x9fdeea5c43048b8e63bde63539847201cb8ad499ace19f38e51d7c004bf0bd33. 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/6537791c-cf48-47a7-b976-9e13e1326383.json and https://artists.proofprofile.net/proofs/artist/6537791c-cf48-47a7-b976-9e13e1326383.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smile - Klod Rights & Sydney's Main Room Mix
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 0x9f55fa95d5dc1582c807bc317aa305f4f112a078d3eacfa4ec1a935d7745a08f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USA2P0883800.
Another Day Another Dollar (Slaughtered & Sliced)
Diggin' in the Crates, Vol. 2 (Slowed & Chopped)
DJ Red & Donnie Houston Presents: The Player Way (Slowed & Chopped)
Throwed Fella Ent. X Spokes & Vogues Presents: Comin' Down, Vol. 1 (Slowed & Chopped)
DJ Red & Kartel Kush Presents: Mixxed Kush (Chopped)
Bo Mac Presents: The Playalation Intro To D.S.P. (Slowed & Chopped)
Old Sport: The Reimagining Of William J. Gatsby (Slowed & Chopped)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe792dbe474b94fe1122b441c2370cebf4f1c48e8baae88ec795de96fde0fecf1. 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/US4NA1110075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecb24407196e4947a22a1814a6d7fc86999e8b9a3e5f22956ef818aaedf2ae1. 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/USXQS2128981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac5806e78e2b22dfe43f7095f0dc4d9fc60d1fadc911dda1b3e93940dbcd0c6. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USXQS2128982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf54d1b3b44f10b54d9c53b43c717a7859690ac7b371aadebe08a96abb3663a7. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USXQS2128983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913e69c8b4604e3817323fdf58e8698a748a3a7573781d10d73c0ce004fd84e3. 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/USXQS2128984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c91329f66f0fe36ae1a8f8eed7a68ab8881ac652c1174795c228c8a65516d30. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USXQS2128990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8250ace999caf8a20bd8f0bd42594f5a4b1058100b6c302513bb8d306fb9c7d0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USXQS2128993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dedcaf6c7a4a295902aa09f59c21f0ea6e9a2fa2e0e4378200c3260c9ce21d1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCAHU2408924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ee5c659e8e90a6de6c5e873ce2225f0aec17dc98ea469e9517cb394bf05f47. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAHU2408927.