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 0x1940f5b56113982a973f2807d9638771497442aca911cfbb5991db708f04360c. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a85bb023-dfd0-441c-8bc3-fdfc4031b85e.json and https://artists.proofprofile.net/proofs/artist/a85bb023-dfd0-441c-8bc3-fdfc4031b85e.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 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 0x2363525e197100dbe162b42e7a0dc234def2a96ba9602f51ec149c5a59d8d064. 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/USLD91756203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75d273ebdb92f2cd241aa465f0eede89ee3ddc7b1211c1dbf3df0184d932110. 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/USUYG1493369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58246abae3c62a34e538f307eb3f38aefa5dfa3773af02a2b129afc43ecee03f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USLD91735802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87329ff7903c421598649681916e2edeb17cadc3bb33d5098817bc7bb279b47c. 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/USLD91732923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f049397ef71020d2545b144a0110331ce0502adf19eaad50df5996dedddced. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USLD91731070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2620d730c57adceb9adf4e362b57118b247d40c55f098cadf797038629849c3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USLD91755050.
City (feat. Blocboy JB & Hoodrich Pablo Juan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eea61abc4049b05084855964c42b018c8d866f616087b49d296bd62ace3f6de. 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/USLD91718466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf302033260c36a443efecdd2ce6c0bc39920fa42b816cae6f4cde03e646b00. 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/USLD91718468.
High w/ Stars (feat. Hoodrich Pablo Juan & Gunna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a22a23c6f8c1a6cb446e144b22cb0d27280dacec48495bb5504df19bfc72cf7. 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/USLD91718471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c09a34b79900887e19c04a3258d61b12dc4d0296c957a0f6ddd8f3744c66936. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USLD91718472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caa939d7e61659e4cc4847258b04cb2ab2b3cf9c7709f04ee251b082a2fcc6a. 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/USLD91718473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2498798e9db8b466903ec8b1c624d99f733e685f16cf5f0c9edc7384c0b49a74. 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/USLD91747243.
Born Dangerous (feat. Bino Brazy & 81Milk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69decd6a783b8865adad4aabaadcda88e3fe96cfa2347fe15a6bacbee4c6c8f. 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/USLD91732670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56454d5c486fea21974b4d512f8e0dde7dc10756b855e3f302ac4b56146eb7f2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USLD91731601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a4bc14ab8944470d04fa03027c91c06258533c2d446dd17622672d2d5f3b48. 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/USLD91731602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80ef6fa49de35fb76ef1b695e30160848dc4d82d04ab567031a631f9486b659. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USLD91731604.
Fast (feat. HoodRich Pablo Juan & MPR Tito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c10719fc3ba0ae37af04317d5ff140ee4e6af0e31d23739f8bc28d94b0e4a54. 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/USLD91727969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf5ddba45f57c2389ede801ae480f753b9f77317c40609451e74961e34b740d. 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/USLD91723267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3080f4c9854bf8bc64463ee27555bba12f22e96d8c68a029d4ffee3148181a1. 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/USLD91722571.
I'm Not a Rapper (feat. Rico Cash & Sherwood Marty)
In The City (feat. BlocBoy JB & HoodRich Pablo Jaun)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718b40dac5814dd8617a4b053f17c644524cd0b60bca5e7a7cfccfc2cd18afc7. 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/USLD91717496.
Zone 6 (feat. Hoodrich Pablo Juan, Yung Mal & Lil Quill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8752f685354dedc89706b635030553d4ba981751fb505f45cb4d1c0892ceb7b7. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USLD91716525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064783b3428990a8036b7f3106076954cbdb6ab1f658d7cab850cdf2716aeb91. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USLD91713140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc304af1c30e8133f908a929ac7372dce0ddae504b88944d40d0b97e72d97ed3f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USLD91712962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57840860055d4601b462201bab51409fb2ce0b5c3969d9df3fdbd7dde5e60694. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USLD91712906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cce94257aafd3388e5557bd394d40cbdddf860ebcc15b7d9ca12013807090f0. 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/USLD91712411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1c2675595fb73ee27320c2edbb233840a1b9f18fdc1746c0b4d0c3eec01118. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USLD91712219.
Only Option (feat. Lil Dude & Hoodrich Pablo Juan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ba1a098f0f8f7c37eab12ffb6b95368b72e754127e6d5523e1023791922fe4. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USLD91711870.
Spill Wit It (feat. Rizzoo Rizzoo & Sauce Walka)
The Rico Act (feat. Young Scooter, Rico Cash & Hoodrich Pablo Juan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45452875156f9bf71e629aa268d522c334b3bfafa4e390c6652acbcb4b0a4223. 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/USLD91703346.
Stiff On Em (feat. Loso Loaded, Lotto Savage & Ca$h Out)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342bc23658e02321c87fa217584f29ff156f40ea09ce308f24d1a2f4ab4d9777. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USLD91702935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915cb3e0b34e921ee6b28079f80f5ef7276e910994d7b7021f6da61f91fc4b55. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USLD91702140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240cff8383e979292047267fbbd6b6863fc8fad50e3b14a19aabebcf595514d5. 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/USLD90816837.