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 0x04cb410d509c9a588bc9d60fdfd9bad6f4a7090e60fbb5737957677efdd39e14. 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/6adf051b-bb92-4fd6-a655-6578e5fe7fcf.json and https://artists.proofprofile.net/proofs/artist/6adf051b-bb92-4fd6-a655-6578e5fe7fcf.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 0xec7512bdff19727355728435d0d3e0aa75350b48ceb325fa93436c0055b143a6. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEG840201680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9b0930ffb0e0d0c918397635e01e199b1986ca27ca48e3acd44a8b45719c47. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USTC10645003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e0d67390a41de07c8180af562b2ecc081e5234aed3bfaa0b9ec44fb3a422e7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:21Z), 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/GBKQU1905561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8520dd4de915b4bfebd8baac25c9017140d2c84c75d32236dbed2d092d7edc1a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:39Z), 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/NLCY30800830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc0ddae83abd9d60503407e09536e877498cf367d16caff0251ac31167ba592. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLCY30801991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d3d64312adbb22fbe66e7a7f866c050d49bb50167cfe0683e0c21cc87f2f60. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLE710841703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9be9f3a6fbf7d2eaed19b5153daa13b71b973dd9f7bbbc32b91b0a8cc6da82. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/NLF711304883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a30b6e6d8a56b8793c2558afd56554e16906edd6c4f7d63227ebe6bbcc7b8c6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLF711502979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2e4e7fa2b48b8c1c02275889919d5bcbaeef24e71e12385b851884817ff945. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLE711500565.
Flashover Recordings presents Airbase (The Mix Compilation)
Flashover Recordings presents Airbase [The Mix Compilation]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcd076b95312ee73622738d9143ecd89cbf27e0fe947fb1b5e4c6dd0d232337. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/NLQ881600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc32f0e231d514bfebf753477dbdf5ee66d9ff145dd5bfb369243bfb2b6fafd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLV61818666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32490046e6d46b61481b1fad34d328ff335d33c20093c2d9b3efdc7c188f7e00. 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/NLF712108430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351bec30f44d7c728f0aab7d00d98babe0c10b20d1cf970b6fb1dbbf08803861. 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/NLE710821104.
In Search of Sunrise 7 Mixed by Tiësto (Asia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6161d3c438c747f993572f5bc785392b62a2b9cd30ba7ab80cee6072431267b. 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/NLD681803060.
Wall Of Sound - Airbase presents Parc Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7892c634159b3b1d7c02aa6a31b2a2eb1cdfbe405fa60932f9f8e11f902dc1. 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/NLF710601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d87259ffeafa8064653178f16884fe4a7c7d81ba275b60b1e52fc6733ba3479. 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/DK4YA1207402.