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 0xb73440b8d842daf004fe82adb3ddb4b27a412072176e1ddfa9ce1ed1071ff694. 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/c6fd5789-75e5-4b64-9d8a-059832055d24.json and https://artists.proofprofile.net/proofs/artist/c6fd5789-75e5-4b64-9d8a-059832055d24.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 0x3b02924028d5a9be6284721817e67fce2e3b6d810ca5590069a835ecee2a2142. 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/0U6Nl4Y8uRDb0bMOoUAt9Z.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/0U6Nl4Y8uRDb0bMOoUAt9Z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0de48d2665397783e6f7af812861fd1932375e8e44e0c3271e6ec874d703de. 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/2VZISHS9yA42rL3lPTgoFY.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/2VZISHS9yA42rL3lPTgoFY.
{"copyright_id":"0x0995dfa5c7acedc43e2e30fa840fbba83829852e5aaee807fe1ec33affb4f183","isrc":"QZTB22363232","name":"Don't Want This","registered_at":"2026-06-25T05:06:18Z","spotify_id":"5LEYyi8Si2v3y5v7YbwJvG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0995dfa5c7acedc43e2e30fa840fbba83829852e5aaee807fe1ec33affb4f183. 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/5LEYyi8Si2v3y5v7YbwJvG.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/5LEYyi8Si2v3y5v7YbwJvG.
{"copyright_id":"0x61e9ead8c33ffafeca0afc230a680a1b5765d33bfa5574fa193278c642ba0ad7","isrc":"NL5WB2300047","name":"Faded (feat. Kris Kiss)","registered_at":"2026-06-10T04:35:03Z","spotify_id":"33yhKaqfhY8ZoHNsditPwm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e9ead8c33ffafeca0afc230a680a1b5765d33bfa5574fa193278c642ba0ad7. 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/33yhKaqfhY8ZoHNsditPwm.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/33yhKaqfhY8ZoHNsditPwm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f75891ba66d13ecd255a6a925e945c567fed06b7fbd17957f9c8378cba09ee6. 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/6r7Yh7BvSelVYgAP5diom8.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/6r7Yh7BvSelVYgAP5diom8.
{"copyright_id":"0xe0dbf3abc296c9f29f8fbd0ad5240a66a45913dafd29d7b2c1541ac1affeb91f","isrc":"GX89G2349413","name":"Walk It Off [VIP Mix]","registered_at":"2026-06-25T23:18:33Z","spotify_id":"6kAf4qtUBe1zhk1fcQgoom","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dbf3abc296c9f29f8fbd0ad5240a66a45913dafd29d7b2c1541ac1affeb91f. 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/6kAf4qtUBe1zhk1fcQgoom.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/6kAf4qtUBe1zhk1fcQgoom.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b02924028d5a9be6284721817e67fce2e3b6d810ca5590069a835ecee2a2142. 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/3GQB0ZE70AxFH79pnLiJ2k.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/3GQB0ZE70AxFH79pnLiJ2k.