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 0x9122284bce2078e74aee5452fd4a220d2c1329cb46e41733fb8b33a6471811e9. 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/a9f8a128-80f1-4e2c-9f64-77cdc8dac7cd.json and https://artists.proofprofile.net/proofs/artist/a9f8a128-80f1-4e2c-9f64-77cdc8dac7cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Los Rios De Chile / Caracoles / No Se Que Tiene Esta Calle
{"copyright_id":"0xfafd6d728807b8db4e83f196968e0f2b4f2405bb4d412987b2b2700e6aa4991d","isrc":"GBCKG0601340","name":"Morena ingrata","registered_at":"2026-06-23T17:52:51Z","spotify_id":"7LLt7eGvM6wSOomh3jUMIl","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 0xfafd6d728807b8db4e83f196968e0f2b4f2405bb4d412987b2b2700e6aa4991d. 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/7LLt7eGvM6wSOomh3jUMIl.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/7LLt7eGvM6wSOomh3jUMIl.
{"copyright_id":"0xc954f8b345e7073905e2b9f21b735fffb7fceb0818fe2732568fd1e31e7ad99d","isrc":"GBCKG0601342","name":"La noche bella","registered_at":"2026-06-24T07:15:57Z","spotify_id":"4xVqjDHg1LN8SNScPa9hrR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc954f8b345e7073905e2b9f21b735fffb7fceb0818fe2732568fd1e31e7ad99d. 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/4xVqjDHg1LN8SNScPa9hrR.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/4xVqjDHg1LN8SNScPa9hrR.
{"copyright_id":"0x922c6f0024535c5fedcdbc90ad27651570be213d52a2a3737d11ace2fba55287","isrc":"GBCKG0601343","name":"Yo naci en independencia","registered_at":"2026-06-26T01:28:38Z","spotify_id":"61hLQH4YuMHCZ0CEVclKCM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922c6f0024535c5fedcdbc90ad27651570be213d52a2a3737d11ace2fba55287. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/61hLQH4YuMHCZ0CEVclKCM.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/61hLQH4YuMHCZ0CEVclKCM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7293bd27de0eb5c4caac64ba9154a6a11dba16d58df8170d3578620c3965cd57. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1tTV4k8w1FB54vMW5cneR5.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/1tTV4k8w1FB54vMW5cneR5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12924b022733a50c0d5c996cf62998f6b2b739bf264bd4b2ab6aae023397918f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5HiKMCn5Ofw4cmi7ZpftvR.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/5HiKMCn5Ofw4cmi7ZpftvR.