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 0xe36e8272731a230808f39529ff1dcc08789f3dd9e1c60d153c2b6d7de7da69b3. 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/49809f2e-4aec-4a91-b4f3-9f8278924799.json and https://artists.proofprofile.net/proofs/artist/49809f2e-4aec-4a91-b4f3-9f8278924799.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 0x9567005abc392fd819e029df63fdf264aa0d0a235f75e5e4420389b9e47a1af0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/51V6P9QhItNSNVgu72PF5c.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/51V6P9QhItNSNVgu72PF5c.
Mardi à Casablanca (with Inkonnu, Jok'Air)
{"copyright_id":"0x49f331b3cd2ce4d6f4c3dcabb01d0682a776550a54fc3ac799016028b5bb5735","isrc":"FR9W11905437","name":"Mardi à Casablanca (with Inkonnu, Jok'Air)","registered_at":"2026-06-06T15:26:36Z","spotify_id":"337KEuR7it1r2HUNQOUNVd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f331b3cd2ce4d6f4c3dcabb01d0682a776550a54fc3ac799016028b5bb5735. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/337KEuR7it1r2HUNQOUNVd.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/337KEuR7it1r2HUNQOUNVd.