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 0xabd5c6f651cb29348d176cd9571b8edb9ca8cb461df8ae35cca7fd890646dddc. 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/d665a718-3aa7-4ed8-8547-80e8a6e447f7.json and https://artists.proofprofile.net/proofs/artist/d665a718-3aa7-4ed8-8547-80e8a6e447f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x1f9420533b131e0c0642ddbad4e04ae4aa7bc6c555f9cffccb1bf00bfb3c2e5d","isrc":"QZNWT2101819","name":"for her","registered_at":"2026-06-28T19:35:44Z","spotify_id":"3rkByobkr8rqXfcNvI8FV1","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 0x1f9420533b131e0c0642ddbad4e04ae4aa7bc6c555f9cffccb1bf00bfb3c2e5d. 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/3rkByobkr8rqXfcNvI8FV1.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/3rkByobkr8rqXfcNvI8FV1.
{"copyright_id":"0xe1d1f1f85d2ee6fed3cff1b03a6860c4e932e307b66c57499bddd5c70f8819d3","isrc":"CH7812353678","name":"Summer Love - VIP Mix","registered_at":"2026-06-09T21:30:50Z","spotify_id":"68EpG0UZgOBTEOJfv7Cd8k","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d1f1f85d2ee6fed3cff1b03a6860c4e932e307b66c57499bddd5c70f8819d3. 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/68EpG0UZgOBTEOJfv7Cd8k.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/68EpG0UZgOBTEOJfv7Cd8k.
{"copyright_id":"0x8147f02e337bcea02f0dcd3bbbb5fe30d30ce8f3d33367ae8d2d7c257e60c67d","isrc":"CH7812353679","name":"Summer Love - VIP Mix Extended","registered_at":"2026-06-21T11:52:05Z","spotify_id":"6nfAQ2ZjyThzmF3T82lgON","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8147f02e337bcea02f0dcd3bbbb5fe30d30ce8f3d33367ae8d2d7c257e60c67d. 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/6nfAQ2ZjyThzmF3T82lgON.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/6nfAQ2ZjyThzmF3T82lgON.
{"copyright_id":"0x18f72c7b5b2fa9529de535fe0b489102f822ee8c7dc6af4e9cf3a6012f3ef3f6","isrc":"CH7812401398","name":"Ride or Die","registered_at":"2026-06-07T03:59:16Z","spotify_id":"3GKerntbFkr1RomAq5wdSb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f72c7b5b2fa9529de535fe0b489102f822ee8c7dc6af4e9cf3a6012f3ef3f6. 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/3GKerntbFkr1RomAq5wdSb.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/3GKerntbFkr1RomAq5wdSb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8452279af69adbf817ed536c5a43320d49fa1c51db3f1ee8cfeb870531a8816b. 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/65opqsrtqoMzAzs4KTfZo7.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/65opqsrtqoMzAzs4KTfZo7.