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 0x1670bf4dba687f1be71c42e6beebb4999203ea2347007faebd4d411c06021878. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dedad300-c88b-4284-95a9-bffacc339a59.json and https://artists.proofprofile.net/proofs/artist/dedad300-c88b-4284-95a9-bffacc339a59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xaf0187f8fda4d53254c7fe03d8257ec25bbc7c3eb56432e63100875d495e3dcf. 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/3g5yQQy9CKwuywJJ3ol5aM.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/3g5yQQy9CKwuywJJ3ol5aM.
{"copyright_id":"0x1400e90b95133ddc2ee9f010ae2a7fa09bfc89d311bae72e722ca829dd72ab1b","isrc":"SE5Q52304711","name":"Too Icey","registered_at":"2026-06-29T16:49:31Z","spotify_id":"5zuayPjFfXvwu8WUYQAMbI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1400e90b95133ddc2ee9f010ae2a7fa09bfc89d311bae72e722ca829dd72ab1b. 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/5zuayPjFfXvwu8WUYQAMbI.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/5zuayPjFfXvwu8WUYQAMbI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c81af5a450a65bd416e918146e476874615a1814ad954768404cae0941348. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1utuzeZE52UpWkt3ygli5V.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/1utuzeZE52UpWkt3ygli5V.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f54998fa7dc8cd0c8d8735eb590bf81f6650c2ef81f5628a21f2eb6f7b3a92. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2EYcUb51RRgzri0TczIwbC.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/2EYcUb51RRgzri0TczIwbC.