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 0x74fe4217c050c845e42fee0b5c06ae6f8b8d5006fc5948272aea387d062acf61. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8a2454f-993b-498d-b1ea-eb7510549039.json and https://artists.proofprofile.net/proofs/artist/f8a2454f-993b-498d-b1ea-eb7510549039.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 0xc855607d8389b0459e4f8bcf56039464c4e1edce73e406df642d32d9035f577a. 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/GBKQU2095289.
HARD FIVE: A Five Year Duro Retrospective
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73044558f790acfdb76a4a4a04503f503b827a7d0ea5c121ddcffab6c8834626. 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/UKN6K2402048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff69ba8a7c370b22e1c77115a4ef3a9b605a8545ba7945a1fede0f1b5220d77a. 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/CA5KR2373039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9666e7480e8e6f8b647a769454e0d3826feb06402a24d1b6673e3c96ee2a1796. 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/QZ5FN2137628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35e430968b5e34b9b8cb64213421b4f385672db5743f2fbf21513c2331abc6a. 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/QZ5FN2137643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a2bb97effe960efd6c98f54d554df787e45b5b92c261296d15ce70788ffc6b. 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/QZG2X2401067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4631cb49493af91e646b59d4a3a8a5b8032072dd1559e41af87219e6d4d96a90. 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/NLRD52353011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f79d8c51fb63fd8d27e506ac434fd9eb7ef20a87f1c3325058a530fcb62f479. 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/NLRD52353015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c7cbbaaaadf88473da8aad34e0a2b5234a217743dfc7b265ace6015a8a6828. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLRD52353026.
Sonido Clandestino - Hyper Trvshit Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bb02ff2fed792c05fcd1800686715960f5e598e484e51c61c9aa41ba457e76. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR2320359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3211e5e99154a9d6906d47278a76ef311d6a324b92c439fa52aaf61f9abaffbc. 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/QZ5FN2240310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb289d8f727205e6585c74c40add7ef2c076a38b6f87518bea1086e23cae49060. 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/QZ5FN2240331.
Me Voy de la Ciudad (Undefined Pattern Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ac090de40eca87345e9165291486f2bc90c468a7e62b4ae889af8c6b09d4cc. 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/USCGJ2191699.