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 0x1373d8b9cb27b6b98e1199fc515a12d691867158b5f199c87683a55a66f68ed9. 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/402d3ea2-a2f7-4ff5-af34-9793e599995a.json and https://artists.proofprofile.net/proofs/artist/402d3ea2-a2f7-4ff5-af34-9793e599995a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xdba036e880e181de400800c1a7aef5319dc9b30c4b0a382b97c43c8c7b7d3eb4","isrc":"QZMEQ2015184","name":"We No Speak Americano","registered_at":"2026-06-21T11:17:32Z","spotify_id":"2WsxnbacvWdBqXlUJpnKJ2","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 0xdba036e880e181de400800c1a7aef5319dc9b30c4b0a382b97c43c8c7b7d3eb4. 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/2WsxnbacvWdBqXlUJpnKJ2.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/2WsxnbacvWdBqXlUJpnKJ2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0915a76c1e8410d840d3af7c17eb5bb0879bcbabbdb4879567051b1e522cc1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2JYuljJ1MlOdRopkdke0IC.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/2JYuljJ1MlOdRopkdke0IC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ddcebec280a0a911e33c9816a45116faa93203b91e3292618b22586e816142. 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/0jMXS91MO0jx4KYGx7nPXH.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/0jMXS91MO0jx4KYGx7nPXH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0167ebc459ee6486d1827515d8061e515fec5aed3936d172d5d1f621393fb0d6. 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/6DzRKgsrurdZJ27FixdNW6.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/6DzRKgsrurdZJ27FixdNW6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78039f54e7c40b8b487e6d29eef18cc2c5591f78b6661b431f01c157b89a7dc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2tvjktD1YPdMfJnnXX50cW.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/2tvjktD1YPdMfJnnXX50cW.