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 0xf21639fa1a54a8e2d8727023193d137b13293ab4db8a249f8a1aee6b1caf99eb. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb3cacd6-c65d-4917-b771-ce745a5bc508.json and https://artists.proofprofile.net/proofs/artist/fb3cacd6-c65d-4917-b771-ce745a5bc508.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 0x58f27c76c89aaf761ba4607ae24858f944a3ae14304be04266da9a512213782a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TCACM1604741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e2827ee72521e46e637598d37ce8ba6c0005d55b13eba15fc7315bfe1ccaca. 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/TCACM1604746.
Grind Mode Cypher, Vol. 1 (feat. Mc Coy Price, Sbo, Massaka, Ney Sean, A Money Gramz & Marshall Law)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656287092f28c55c3fc2e6115e27b7986084b9ab5e58013bd5c4bc7e037c2504. 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/TCACM1631092.
Grind Mode Cypher, Vol. 9 (feat. King Blob, Chester Green, Rizzy Reem, Sionide, K Lo & Flawless Real Talk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cb13ae2867363e4f82eaa2bc5148cd31ee31ccd3d201c89afd1bd3cca29924. 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/TCACM1631120.
Grind Mode Cypher, Vol. 18 (feat. Rudeboy, Tyler Castonguay, Skom Brady, Tro, Pr Drone & Protege)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb53540d9a77b8973fefa32ef1fc2a7cc976e32c211cd57cc77a32a2bcbfe369. 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/TCACM1631155.
Grind Mode Cypher, Vol. 24 (feat. Ceaz Da Moment, Mulatto The Mutt, Gorjus Killa, Zay Mc, P Seize & Rippz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b65d5f6a8f3a5656361eea8f0c0f1373bf1ef98e64fb4666a49967d425bedfc. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCACM1631179.
Grind Mode Cypher, Vol. 30 (feat. Dillinger, Chris Styles, J Mac, Chubz The Rockstar, Mass Of Man & Big G's)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab74b1e3b9bacf7e3d40a57aa040d5bc3f9a83792eb77df53aed0af9b2013d1. 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/TCACM1631196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f234a72b156919ac86ae5c1de928d86d12215b59a670cf5809aaa234141dc0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCADT1899869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d9d5319c87973e1427a505f704f2978dd05a7202ae745154f075b8c5786c72. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCADT1899943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ef2ce30d45be5151b581ce891d117754b13e97745aa0d0b2359aa2090ad262. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCADT1899953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae1cd882bbce0f5e0620ff0ba12ad10f00404b22506a5462aa7830f0cbff45e. 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/TCADT1899957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644282811fdb6c099f6438c231d45bab83c3d38df7dfce1ea4b328c1e39a9616. 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/TCADT1899982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a024e9e1afedf0a70f910c8b744211fc71186f22d144eda65ef30f04e75e67. 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/TCADU1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967316a2d5889bdaf6cd22eb5927dc6e3d46baba71c1bfa6d2fcb12693e313be. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TCADU1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec80b18014d449d5232df181305188e20bb69113518dad40a7f404438487920b. 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/TCADU1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d06541f594c31dc5396822b513231f177067bd2e80db3b4da6b65fb831d64b9. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/TCADU1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4503b381c9f20a29bbb90a20eba0782338145cfc566f510385ef0e98d7ec4866. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/TCADP1820911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1365ee8e18f36252d9dceb3429332eee4ab2cc75d2a4e0873345a655b7736. 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/TCADP1820920.