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 0xa2882c183ec0b1827e6efe5dba6d6ecad5d07186802be1cd4d95ed3744c3fbba. 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/c7835d4d-ce61-49d7-9fc6-33bbe87fd3cc.json and https://artists.proofprofile.net/proofs/artist/c7835d4d-ce61-49d7-9fc6-33bbe87fd3cc.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 0x913ee4283dc91a497d6b37e4c07446212a06a8072a1d1a7ebbcf580d053cf540. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6nZT0uhf4mLd7mSfwxe531.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/6nZT0uhf4mLd7mSfwxe531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9463a088f35b7f7cfaa695f6e9d7e401027c845ae844351b851d593cdaff0f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5QaW85KXBQv70x0k20mzse.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/5QaW85KXBQv70x0k20mzse.
{"copyright_id":"0x2491e73d923fcc0962ace23deb0f354cfa2dcc8f8a9a8de33dd4dcef85ed88d2","isrc":"SEAMA6568120","name":"I Don't Want Your Love","registered_at":"2026-01-29T03:31:35Z","spotify_id":"5IOzWAemqtrTvobD3jIwq9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2491e73d923fcc0962ace23deb0f354cfa2dcc8f8a9a8de33dd4dcef85ed88d2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5IOzWAemqtrTvobD3jIwq9.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/5IOzWAemqtrTvobD3jIwq9.
{"copyright_id":"0x4a1a83f9e41a5a70e417f5e4dca515178c4d0bfbe7e0e903048a026d8c76c6e2","isrc":"SEPQM0612337","name":"Cotton Fields","registered_at":"2026-01-29T04:54:30Z","spotify_id":"1Dzjke7WjXeKduDAmnKXxc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1a83f9e41a5a70e417f5e4dca515178c4d0bfbe7e0e903048a026d8c76c6e2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1Dzjke7WjXeKduDAmnKXxc.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/1Dzjke7WjXeKduDAmnKXxc.
Men att älska dig är det jag älskar mest
{"copyright_id":"0x2d41469cc186aa46c197c57a5626e0adcb9eefb4b360f70f4cdb39a5b639f9f7","isrc":"SEAMM6700146","name":"Chris Craft No 9 - 2001 Remaster","registered_at":"2026-01-28T18:24:08Z","spotify_id":"1vMIAutHPgYCnH4dhtTPrE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d41469cc186aa46c197c57a5626e0adcb9eefb4b360f70f4cdb39a5b639f9f7. 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/1vMIAutHPgYCnH4dhtTPrE.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/1vMIAutHPgYCnH4dhtTPrE.