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 0x9a1dc137efef2dce490b154513f84f7d61e983874a78146a82c66d32dff592dd. 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/e3e0cb17-0f67-4afd-aed3-187268925689.json and https://artists.proofprofile.net/proofs/artist/e3e0cb17-0f67-4afd-aed3-187268925689.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 0xe46e38b070deb56921ab86d8b6298277f89eaf5512278d925df14a7cf4937971. 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/1ttrtE1YPVuWZmqIWvMSM5.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/1ttrtE1YPVuWZmqIWvMSM5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108a21b81d2d9a6613f15905c4ce4730383daf7086d57d347e3ed23123a567af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1PqpXeMAYjzFPJR5II2i1i.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/1PqpXeMAYjzFPJR5II2i1i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f8b8278ee4bb84c90a2af98fddc983c4c1a53d87345a617be3fc311a0c9dbd. 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/2YkPi4rWxxON8V1y5xeDCA.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/2YkPi4rWxxON8V1y5xeDCA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200bfe972a2b45f80599f97cb6440339d4536152996bb7d331dc53bbadbcf3ce. 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/0JK4n4N2SXiCdiWzJzFm7H.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/0JK4n4N2SXiCdiWzJzFm7H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c6dcccaaafd94111d06317759a0da4cd4061496af184cc6db3fd8f746e820d. 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/4dJEcddzkjK3lQDNYtpQR9.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/4dJEcddzkjK3lQDNYtpQR9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7132cb3b9eb8c4c217a63ee6f6f27d8ad26ed87a40099d9656878e96c37df3d. 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/0zwPu1H0B8wtAc1AGyPOWR.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/0zwPu1H0B8wtAc1AGyPOWR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31825a7053fab8057cdc406ea94e7900056ae788ddc94027da28b280072eff6f. 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/5T7D1LzV6WyoyCEXNYp39M.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/5T7D1LzV6WyoyCEXNYp39M.
{"copyright_id":"0x218b8c238cbbaced5907cc52ee3fcd2d045a1d3c17a91d4006086f8901d4df6d","isrc":"DEWO71700394","name":"Saved You","registered_at":"2026-06-11T20:19:12Z","spotify_id":"21dQmhOfvG6CVxtrmMPo2X","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218b8c238cbbaced5907cc52ee3fcd2d045a1d3c17a91d4006086f8901d4df6d. 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/21dQmhOfvG6CVxtrmMPo2X.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/21dQmhOfvG6CVxtrmMPo2X.