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 0x143a090336e5dd14f69cb764882dcdc7bbd8090e902bd9d961b1bd25fae9e9f4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fb68952-7d9f-4313-8bf0-3c67504058bd.json and https://artists.proofprofile.net/proofs/artist/0fb68952-7d9f-4313-8bf0-3c67504058bd.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 0x217dfb730773497994999a20c6f3754aed47ee3d0a601a71bcf3388f7c4962e5. 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/00uiaz7Zit9uHvAjRF9w3t.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/00uiaz7Zit9uHvAjRF9w3t.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd2c534b6511d3ad8f4cc6eeb085266aa1cd01697a4f8784e5a32fefa1eece5. 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/5qgUN8PUdtXen2QHd34g4B.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/5qgUN8PUdtXen2QHd34g4B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58acced4bd18d5195d1a5cb588473b48143ed6369d61c5df8d1244147ec0e374. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/62WWaT59rbHgUuN159jUEc.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/62WWaT59rbHgUuN159jUEc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26258482ed03c8caed68a8ff44fb0b529f7801e2f5fca11716015f0e4b61d1b. 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/52Qck0oIMh2UUaSi4BSZD0.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/52Qck0oIMh2UUaSi4BSZD0.
{"copyright_id":"0x4dbf63dbbf09adef0449be7546304661084d325f90c73f7e64b0bdb569adaae7","isrc":"BRYLP2200098","name":"Pra Ver o Sol Brilhar","registered_at":"2026-06-21T02:12:32Z","spotify_id":"4anC7c5BZyIgHW84pZtuAK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbf63dbbf09adef0449be7546304661084d325f90c73f7e64b0bdb569adaae7. 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/4anC7c5BZyIgHW84pZtuAK.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/4anC7c5BZyIgHW84pZtuAK.
{"copyright_id":"0xb18268f688378deb942f988aa09253ac314db4b2fe3dda7bc639736a8a0fbb85","isrc":"BRYLP2200102","name":"Pra Não Dar Bandeira","registered_at":"2026-06-25T19:49:46Z","spotify_id":"2ZzBmhqJe05T8iou0OcI16","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18268f688378deb942f988aa09253ac314db4b2fe3dda7bc639736a8a0fbb85. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ZzBmhqJe05T8iou0OcI16.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/2ZzBmhqJe05T8iou0OcI16.