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 0x8a943769ca3cae19d806af528766a5c1a742123efd5818edf98eb1801969f739. 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/410b5d95-ee20-4035-84a7-2e38cd623035.json and https://artists.proofprofile.net/proofs/artist/410b5d95-ee20-4035-84a7-2e38cd623035.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 0x4b2ad04102b2bfadabe19d53fb72d691f0acb3f68c308e9f3529cdd27f31e99c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZD711900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad98d65999edd7186f6f626415ec6a184e394653dd554e29e2a06a956f21cc2c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CZD711900198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86f38efa59f1630f07dd068fa3eede1e3a83c7f22c9536244796820adbe9096. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CZD711800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57554c0abdb00406ee396ed24fa699ceac45939e859f271ea8e0aae526b9d2fd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:03:54Z), 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/CZD711800039.
Mít či nemít (Spravnej Beat) - feat. DJ ALI
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89391bf4c51ed5d05f5c1c41ffd233c60e973c94aa8b5392ab0bf74917ddfcb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:02Z), 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/CZD711800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402fc1c2fa759bcf33bf2c8e73bf4fca7a8cabe0dedcbdc11587a61d28e862c2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZD711800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e15eac238cf3bc5f31b97ac91db2c7eae89f20e5954b18f39e494c955273bf. 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/CZD711800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034bfa50603158f4636c06a991448588d26b3c5cbcaaafca1e7b9786134ae2bc. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/CZD711800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf786d94dfbcbcefa7d48f68e89ac06d2df5fb501c590b582bb2ccaafcf094fd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:46Z), 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/CZD711800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71fccf4299ad44b9a6d96051b73b31ac4fa4e5f9fff949d6c9788e6ab22c79f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CZD711800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580dfa051af4fc09c3870b0bd0a76de187ea8b839ec6610dae0b77903581f98c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CZD711800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa377905a73ade34bc1bea54b9eb110cd189ca3bd657bf3408e21a3031d81526. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:46:06Z), 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/CZD711800055.