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 0x2b0c559b17c76c4e7d368723840b9ccf99a605c2091748e8aff7f15e80edb66e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34211370-1a6a-4f8e-9bfd-e0dc796e6866.json and https://artists.proofprofile.net/proofs/artist/34211370-1a6a-4f8e-9bfd-e0dc796e6866.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 0x5c3c8e5b1ec95e29e9b7de84288338c426a89a2c4e47a05c4fd69f88c54a312c. 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/GBLAL0500059.
Ancients (Skeptical Remix) / Cylon Theme
Ancients (Special Request Alternate Intro Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1f6fe3b0830789f66e41e7a0a3b491d4df004ae9afb128acd7f635500b3950. 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/GBSJN1301046.
Headz Roll - Ink, Loxy, Resound & Gremlinz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78af2cce2f0469125706856367146e596369b465a1c5a7e2cb73aa758d3a946. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBBHF1330009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8de503e5bfb8cf19bccec48315f705d44a5ee0df51e2b7434a26252fc01cbd. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BEZ352100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572f51ffe20f3626366f869cab90a9107f2681ce6ed762aeadc2052ee97a8254. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BEZ352100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae88151f42ab227f4e7a0a39c2da76e358c71f1a55b8f7a55f474a43213b44d8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BEZ352100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975bcb37f511b7ed34000b54cd4ff212780d21502e6f9a9877df242a38361bf5. 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/GBQXF0430019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c9549bca3a8540e0e98bca6538fb9eb97db0895d90e1c8d1bd524f03012724. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR0U91202674.
Renegade Hardware Presents the Four Elements, Pt. 1 (Earth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb256712f52d9c2099b748eded91658c55e8adf4a8ce419d80ae9e366621d2734. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBQXF0230021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e5e77a4c938be2c7591e95cbfbe0c37ffac302c3a820e63434494787e05753. 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/GBQXF0030035.
The Harder They Come, Pt. 3 (Colonisation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3446c846b521bd4024c495c91ea8218b020f26cb68ac5534a34a594ed70dd70. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBQXF0230018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089a8e8e2c15607bf2de832bfa5d88e1b999b7b26b5775cd8b38f139d7295167. 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/NZSU12100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5f7b220ab4e9ad442a80415b24879991540513a2ef37cf290d1821719d0e44. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GB3X91200010.
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 0x6ed145075b6ac823b9cb2759661fec402f92c0d0db6e75f9f4cde7a0115e0f09. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBCJY2000088.