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 0x26904461ca2a286acfec17078037a0aa921afc1125794a2348366dd0f2ad22cf. 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/fcb5a880-5c1c-4fe8-9f0d-aeee82c9424b.json and https://artists.proofprofile.net/proofs/artist/fcb5a880-5c1c-4fe8-9f0d-aeee82c9424b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x87f762113ae6b1be08ee657ca3cfe939e8fc772b5d2f37deb1d308fa29cad45d","isrc":"US4HB2400018","name":"IT'S STRANGE..","registered_at":"2026-06-29T05:37:43Z","spotify_id":"1Wv0VHUfnVa0Nwomnxk7AB","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 0x87f762113ae6b1be08ee657ca3cfe939e8fc772b5d2f37deb1d308fa29cad45d. 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/1Wv0VHUfnVa0Nwomnxk7AB.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/1Wv0VHUfnVa0Nwomnxk7AB.
{"copyright_id":"0x1380f0df98018b99ab1111e9ed349c24f3e2ed9f2a4136c7fcf14e6e838bc052","isrc":"UK7H21500144","name":"Final Boss - Wavedash Remix","registered_at":"2026-06-24T11:27:24Z","spotify_id":"1D3R6tiHBR3XC5T4dEob4w","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1380f0df98018b99ab1111e9ed349c24f3e2ed9f2a4136c7fcf14e6e838bc052. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1D3R6tiHBR3XC5T4dEob4w.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/1D3R6tiHBR3XC5T4dEob4w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e5b3525c2be05846b113ea952d71c6b2cebbb648de715d3f2825f22ce2519e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7aVnwwQOMn08cp9CQlTWgu.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/7aVnwwQOMn08cp9CQlTWgu.
{"copyright_id":"0x201a5a9e567a05d187f1ec5a11a9e8f7faa0a39c325582a924adfa9cb171cb83","isrc":"QMUY41800256","name":"Era (Shadient & Wavedash Remix)","registered_at":"2026-06-24T09:17:29Z","spotify_id":"4MWsh52KkDPFyjOV00lHmA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201a5a9e567a05d187f1ec5a11a9e8f7faa0a39c325582a924adfa9cb171cb83. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4MWsh52KkDPFyjOV00lHmA.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/4MWsh52KkDPFyjOV00lHmA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56da4d244e886261eff506e7a3e91a4279598bea89d395a62eeace4d7e96f012. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7c0uucjBkcpYeNfN4MZDIs.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/7c0uucjBkcpYeNfN4MZDIs.
{"copyright_id":"0xfd1e81d8ea35ec932a9cad6d427ce5231cb40b8db29feed1603959e7553f7a2a","isrc":"NLRD52023147","name":"Walk Up","registered_at":"2026-06-10T16:41:40Z","spotify_id":"3vKpNd7HUAcMbZOP6gqb4N","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1e81d8ea35ec932a9cad6d427ce5231cb40b8db29feed1603959e7553f7a2a. 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/3vKpNd7HUAcMbZOP6gqb4N.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/3vKpNd7HUAcMbZOP6gqb4N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56da4d244e886261eff506e7a3e91a4279598bea89d395a62eeace4d7e96f012. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6YjTd8oQYrVUUF13MAWnoq.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/6YjTd8oQYrVUUF13MAWnoq.