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 0x4c4daf00dd8bd2e214b5d11f2356a6dad14bf48fb4d911775fc4b7774fab7b4a. 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/cca7847a-43ae-486c-9f2a-a44f6abba7da.json and https://artists.proofprofile.net/proofs/artist/cca7847a-43ae-486c-9f2a-a44f6abba7da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xacabd9e79996cb4dfc7ff19c5616a6af8ef4dd5cdc0b2cd75f1dd2bbec30b139","isrc":"PEKB10202021","name":"Maldito Amor","registered_at":"2026-06-29T04:25:32Z","spotify_id":"6rEdTme7BqFLQkOrN6b7Id","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 0xacabd9e79996cb4dfc7ff19c5616a6af8ef4dd5cdc0b2cd75f1dd2bbec30b139. 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/6rEdTme7BqFLQkOrN6b7Id.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/6rEdTme7BqFLQkOrN6b7Id.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3e7b69b807ea4f361a349bc6d9678d16f6acb7fa97aefa80872b102985a7fa. 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/1oUiTANQmNB50Uc8aQEGxC.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/1oUiTANQmNB50Uc8aQEGxC.
{"copyright_id":"0xf0e7d9bd15813bfd4b2c0c5147ed7bf93a45ad8d9da8e4d0f91e008d75913583","isrc":"QZNJW2359643","name":"Nos Van a Escuchar","registered_at":"2026-06-20T23:04:48Z","spotify_id":"0ydZwMus6teAlHjJ9EExVT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e7d9bd15813bfd4b2c0c5147ed7bf93a45ad8d9da8e4d0f91e008d75913583. 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/0ydZwMus6teAlHjJ9EExVT.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/0ydZwMus6teAlHjJ9EExVT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2bf391a9e8a61b34a33a80222589e59dd49dc3a0a4104f60fe48610bc5eadd. 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/73mpDiRAb9ozRUg5R0vnTr.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/73mpDiRAb9ozRUg5R0vnTr.