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 0xe05235a163e7b6a1e1af280cc0361af67bbf08cb1cded9bcdddf962fe45ae413. 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/b7807609-0d75-4f9f-8dc3-dd18589bda8f.json and https://artists.proofprofile.net/proofs/artist/b7807609-0d75-4f9f-8dc3-dd18589bda8f.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 0x7adf92e9058eb93dd4adb5415a2a5137fb1375bfdff22fc82a68b64aec806c2b. 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/QZZ772415301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4665e9271c36065ce042b8ec056fe8eb51d903ee61169ec9536ab7a55db3d35a. 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/QT3EX2461225.
I Remember - Paolo Ortelli, Dyson Kellerman Edit
I Remember (Paolo Ortelli, Dyson Kellerman Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32249288f7ec8d6d443e34f80be24827f391508fd1514d12299e736793d85a6. 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/NLDD62300272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8567fb05965ba0ad14b2415389094a8a3cb4dda57d462c7b24dafbba5f94b108. 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/DEN061800827.
Symphony - DJ Antoine vs Mad Mark 2k18 Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe1a4f1d0491f65c2a7cfbe100da292bdcf0af6be9d9277e0ce842a6927fe23. 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/CH4881801503.
El Paradiso - DJ Antoine & Mad Mark 2k18 Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c2c6ae57123b48f75f918820cdce1bf82c6058447c71471c9f03e1500d4e28. 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/CH4881800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289c47d80858b70779bb095811ee37cd0a96a4cb311b797b518c97f86f83757d. 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/CH4881801501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a3cbb5468ff1a0955277d9c3cd607fc035a834d0876f38a6f416ad191f2335. 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/CH4881802001.
Up in Amsterdam - DJ Antoine & Mad Mark 2k24 Mix
Up in Amsterdam (DJ Antoine & Mad Mark 2k24 Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e40ba771075346ea5f87cc3812402854636bb7905aca53f5e0f7f4b2963b4ff. 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/CH4882400301.