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 0x9bf56dea842eff0b893b63305df6fce489600fc4fecae10fb2ed7ab16824a1a1. 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/578a2896-aac4-4eff-ae0b-f98f13087aef.json and https://artists.proofprofile.net/proofs/artist/578a2896-aac4-4eff-ae0b-f98f13087aef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x50575c746e261b1ec056cfe7d671ecef82cac35bf05c7f941ae8c402ffd730aa","isrc":"IL6191800715","name":"עולים ליגה","registered_at":"2026-06-29T12:33:38Z","spotify_id":"0xPnoFAHOYh0kxGy7EqDbE","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 0x50575c746e261b1ec056cfe7d671ecef82cac35bf05c7f941ae8c402ffd730aa. 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/0xPnoFAHOYh0kxGy7EqDbE.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/0xPnoFAHOYh0kxGy7EqDbE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3653d66521a59f14c8a7eb41662ab351273dd862bb6715f363161e84552d5d75. 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/4aw1tuId1O5iKvZRHvB3vg.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/4aw1tuId1O5iKvZRHvB3vg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19907aff17bf3b6d876d0803542d22dcb4a6cc085603f4bd142afec81840ad33. 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/7aagfJgKJQ6xYPdXWFIIuv.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/7aagfJgKJQ6xYPdXWFIIuv.
{"copyright_id":"0xca13f0e0e4a8f4d040e379541ee5f3a9db42ab1291fef18efedb699d6007bca1","isrc":"IL6192001535","name":"ביטים מהבלוק","registered_at":"2026-06-07T14:11:23Z","spotify_id":"2UZD1v7P17ho1MBnBndUUV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca13f0e0e4a8f4d040e379541ee5f3a9db42ab1291fef18efedb699d6007bca1. 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/2UZD1v7P17ho1MBnBndUUV.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/2UZD1v7P17ho1MBnBndUUV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd223a4898a688124398807300c838bf1a6faee2b706a9ad71c99656c98a909d. 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/63SKtaYhXwMAX0c4vAA7U5.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/63SKtaYhXwMAX0c4vAA7U5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb951b911ce7e84022f71450a443972c803561dfcb2ba1364cbde90d268cee9. 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/7FeC4Hs7zr7Tu2ee7aNpAk.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/7FeC4Hs7zr7Tu2ee7aNpAk.
{"copyright_id":"0xd5e90e5dcecb05921a008f34795e5aa5bec7fb998e6d041b7185a1e1c6d095c1","isrc":"IL4291002343","name":"או לה לה רמיקס","registered_at":"2026-06-24T18:25:16Z","spotify_id":"6gSrRYkHMBmmo97dQreixp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e90e5dcecb05921a008f34795e5aa5bec7fb998e6d041b7185a1e1c6d095c1. 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/6gSrRYkHMBmmo97dQreixp.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/6gSrRYkHMBmmo97dQreixp.
{"copyright_id":"0xbd90f03139d1845ac0425d79b33fa419943087aaa9a721a77eece4a1a5996fa9","isrc":"IL1042305609","name":"דברים הולכים להשתנות - קיסריה אנפלאגד","registered_at":"2026-06-09T19:18:19Z","spotify_id":"2LFCTH1xMjQjInWbRvm9do","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd90f03139d1845ac0425d79b33fa419943087aaa9a721a77eece4a1a5996fa9. 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/2LFCTH1xMjQjInWbRvm9do.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/2LFCTH1xMjQjInWbRvm9do.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb872d62b0d4171be35bdbaf44408564eb13a6d5eecfa1e86352158462c20e720. 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/0PpsfnIMo1U5FHOAHgWM95.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/0PpsfnIMo1U5FHOAHgWM95.
{"copyright_id":"0x3eb85b8f6f0edfa9f98b65e208d30a4848cb2f648dc4be4a79f9949fc598a14c","isrc":"IL2991708005","name":"דברים הולכים להשתנות","registered_at":"2026-06-05T18:12:20Z","spotify_id":"0tFpgObKdUnoV8r5InU9HC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb85b8f6f0edfa9f98b65e208d30a4848cb2f648dc4be4a79f9949fc598a14c. 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/0tFpgObKdUnoV8r5InU9HC.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/0tFpgObKdUnoV8r5InU9HC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c1a21ba900dcb2e377019b1f76b7fdb27799c154247ca96bbb3161ef4f46c7. 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/6aszJQcdJFZCaWd1fAGeR4.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/6aszJQcdJFZCaWd1fAGeR4.