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 0x7868333569720bd2a9e6237a94c7e375b2a9b72e727648281ec4470e19aa1f08. 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/82081120-7b61-42e8-a482-714da962fb22.json and https://artists.proofprofile.net/proofs/artist/82081120-7b61-42e8-a482-714da962fb22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Burning Bush: A Journey Through the Music of Earth, Wind & Fire
{"copyright_id":"0x034123dacc7b69253fff10a86ba631a015e8e99a2f5affaa1cc8ea0352d5022a","isrc":"USA2P2323026","name":"Sun Goddess","registered_at":"2026-06-23T04:12:28Z","spotify_id":"4jLhP8hgk8iRSVWvxHahaW","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 0x034123dacc7b69253fff10a86ba631a015e8e99a2f5affaa1cc8ea0352d5022a. 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/4jLhP8hgk8iRSVWvxHahaW.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/4jLhP8hgk8iRSVWvxHahaW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770e8c206b62497678168df7526296a8efced2fbdc64cb1538e465ee0885799e. 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/4Pdo4Ly9MeZndlRs6ueO97.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/4Pdo4Ly9MeZndlRs6ueO97.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3185493e33988ee0cdc14d18d33f881f7594a168847ace97ac749a96e9693fb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/59HbqK89KzH99VrAVVemb9.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/59HbqK89KzH99VrAVVemb9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b331f935866fed535d7dc238b25d47415971af87f6529682c58af204ad053ab. 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/5hYhacfaYB9dJafkflDWvN.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/5hYhacfaYB9dJafkflDWvN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29fe09ebe87ac0a502d1983475485d33d13c67abe4d75e7beaa52c4969572de. 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/3nH5a7JQS4kevSjxl2ACHw.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/3nH5a7JQS4kevSjxl2ACHw.
{"copyright_id":"0x4c71b5cb51cb4e95ecea6b0fd3e6a2e175eedcf43f108c16e6880013fb53503c","isrc":"GBMYF2200154","name":"Welcome 2 Leather Boulevard","registered_at":"2026-06-09T17:34:21Z","spotify_id":"0dHfreHFwUwhLvx5kCcqOQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71b5cb51cb4e95ecea6b0fd3e6a2e175eedcf43f108c16e6880013fb53503c. 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/0dHfreHFwUwhLvx5kCcqOQ.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/0dHfreHFwUwhLvx5kCcqOQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d88f66b6fcf0e9a791345f86259eb14f32d71b44a353d1725cb8ee0adc6692. 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/20tMFzQngWtXPNVUSI0XhU.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/20tMFzQngWtXPNVUSI0XhU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a200e8d6004938890846a9389cdca851e3b4684d415c857b32eba1a738ab8ea. 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/3V2UiPy9Zh2CYkgJLDPCak.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/3V2UiPy9Zh2CYkgJLDPCak.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f63913a178156f4386f8f024579508338349b7fb06c942eb5886a54d74ecef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2SWP5o36TJ1PBs2QyHM0R2.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/2SWP5o36TJ1PBs2QyHM0R2.