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 0xde950040737dc727752320a5b81a51e04181369aad3034aff4bbe6745d28d9b5. 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/f335ddbe-a9d0-44a6-bb9e-7bfabb66a2a3.json and https://artists.proofprofile.net/proofs/artist/f335ddbe-a9d0-44a6-bb9e-7bfabb66a2a3.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 0x43455ad4800d03f872a05b2dea3274b594de093b82794acfbda9ee581f8d3aa5. 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/2aUshhiooNJRHXbWTHWUIg.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/2aUshhiooNJRHXbWTHWUIg.
I Want to Know (Z.O.W. Remix - Extended)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7135e235cec0809c443f7ec3027717b8840213b46d5fc289df6e4de02f8ae7e. 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/1KkCSJcTjKFDLE2M80Y9Ll.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/1KkCSJcTjKFDLE2M80Y9Ll.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6559cb7b70fbe0f2fccd725598ccb231785f07d162299f0b6a2b34afd0efa7. 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/5g4QtCcuzRXukk9e1UzjTN.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/5g4QtCcuzRXukk9e1UzjTN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a181e3047a1474c855f60685d4db73e5690bac59db1a8d0a9fa3e0d7c6e563. 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/7jOnl0LwVNXXBgFqorIBj9.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/7jOnl0LwVNXXBgFqorIBj9.
{"copyright_id":"0xdee7756b9dab886f8384aacdeab92c0cd87d60110baca5cdfbd699b916714047","isrc":"USY742300002","name":"Surfin' USA","registered_at":"2026-06-29T09:30:30Z","spotify_id":"1fHXjIY3dTURFbZmqWcxoa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee7756b9dab886f8384aacdeab92c0cd87d60110baca5cdfbd699b916714047. 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/1fHXjIY3dTURFbZmqWcxoa.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/1fHXjIY3dTURFbZmqWcxoa.
This Time I Won't Forget (Ten Year Anniversary)
This Time I Won't Forget - Ten Year Anniversary
{"copyright_id":"0xf66a484c850f60bf79c9e1e4f79fd7a57fc61c8c7dcd36a1901dbf37d124490e","isrc":"USY741200005","name":"I Want to Know","registered_at":"2026-06-17T21:18:11Z","spotify_id":"4LSLKYiqfijz23LeoW0Zic","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66a484c850f60bf79c9e1e4f79fd7a57fc61c8c7dcd36a1901dbf37d124490e. 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/4LSLKYiqfijz23LeoW0Zic.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/4LSLKYiqfijz23LeoW0Zic.