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 0xf52b19599cc3a467fde7a9c17cacf6ed1f2927e42c10851736af4bd6fcc7342d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aab602bc-6632-41b5-850f-5cb6d90f39d2.json and https://artists.proofprofile.net/proofs/artist/aab602bc-6632-41b5-850f-5cb6d90f39d2.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 0x481456ba415d26f48d47585a4a62982a882903e48bdea0249efb5a088eccb645. 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/NL5UG2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf18992f4c6d9c9cb57cd32d36185e87f689692124b7aae8a65fecc8538ed238. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NL5UG2400018.
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
So Good (Tritonia 414) - Alex Mueller, Retrika, Sputniq Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0254c5582eeb75dee94b1a155fa567a48b9c00181087b9eac50e61a1f8f7a76e. 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/GBKQU2313234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1f1315010c9e7ed87d1f440a66a10da9a291bf04519648cd111df0d2aa0ed1. 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/NLQ8D2400732.
Move It (with Luciana) [Sam Noton, Alex Mueller, Retrika Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0940b2ef128115ee726a7c5c8477232e753b1eda29cb08769e809255d44f868. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLZ542301854.
So Good - Alex Mueller, Retrika & Sputniq Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b77b6b52f306cc47e51a8e454582fc6b2c2c59eed45ad6544b76337d8e86806. 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/NLQ8D2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daa0398c5f126428e3084ace1aef34ddf732366b4a2fde0be6b655bd8fd78bb. 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/GBKQU2393079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab178bf1066f7fb2cc4ae5011b479430257cb3d2f57a14ba88b9ce36619aad5. 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/NLQ8D2400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275864eb79bf516a0829dc3cd65d96bae9722a38f9ce9b939489a152719cb391. 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/GBKQU2419590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa240d1d59469f224fd3e435ccc4baff920f9ddbbb67465cffde1c55b2074284e. 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/NLQ8D2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd12cf072df32b799c6e3df2c55e5f11b7b87f1ed32d60f50b14dbbba2a1ddad. 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/NLQ8D2300551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912af56acc3e92351ec8b045e9408a9af5e9dd24f34a2d2918948118c0fe0bee. 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/SEXJW2302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9f6191d541cec388090efaa47c6c91c9e8a9c81644c05faa4f8bc6efe6e0ee. 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/CH3132300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189ed3b5ece898797e2cb1e330706bcb27718b64380f4fedf99a501062313ac6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2350117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc517d9f7f94d4169762c3824fbe9c73b87da62b1a1e59b9744def05f98990a. 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/NLQ8D2300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa968dfd06870d9e828bee2d901fed69a72ba0553c118267b55885513862bec35. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLQ8D2300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfad7425cd6450941d0b24b5a56bc39c46e76128e0f01a06b82c4d8bb6072b9. 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/GBKQU2350116.