1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xef5b4471eed5569afeaadb7e39ffdf2c1616e8cd4c03a38f52a279446a2898ce. 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/5274382b-b349-4d7a-a105-bd7d1afb3d47.json and https://artists.proofprofile.net/proofs/artist/5274382b-b349-4d7a-a105-bd7d1afb3d47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa54dc5ad40f3c1727ee59728ddcfc66515b0aec019008dfb2b60e36e97ae13b5","isrc":"ING120902256","name":"Parhan Raat Nu Behndi","registered_at":"2026-06-29T21:02:24Z","spotify_id":"6drG5uGP4n4uvRQDKWblAh","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54dc5ad40f3c1727ee59728ddcfc66515b0aec019008dfb2b60e36e97ae13b5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6drG5uGP4n4uvRQDKWblAh.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6drG5uGP4n4uvRQDKWblAh.
{"copyright_id":"0xfd5213a15015b7eefba16a635b67b8e0c74db98bf3b95301171ea8fb8ca483ba","isrc":"IND301300172","name":"Gussa Kehrhi Gall Da","registered_at":"2026-06-29T21:03:43Z","spotify_id":"3Swi5aLjAaXls7EXvZWrLO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5213a15015b7eefba16a635b67b8e0c74db98bf3b95301171ea8fb8ca483ba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Swi5aLjAaXls7EXvZWrLO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3Swi5aLjAaXls7EXvZWrLO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bd6ae3505ceb0c33ebdbabd39b0c81c46bdd2fcc350c12ac0dbb92f7d4dba3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3hm9UZPMvlW0OABjMYKFLm.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3hm9UZPMvlW0OABjMYKFLm.
{"copyright_id":"0xc60d0ee03dd291dcc98bcf9874748e0d477aa1c452fa3eb833c831175b76201a","isrc":"IND301300057","name":"Mainu Hasdi Badi Sohni Lagdi","registered_at":"2026-06-29T21:01:05Z","spotify_id":"6vhGaMIllQpLUNdY6Nipwf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60d0ee03dd291dcc98bcf9874748e0d477aa1c452fa3eb833c831175b76201a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6vhGaMIllQpLUNdY6Nipwf.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6vhGaMIllQpLUNdY6Nipwf.