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 0x156a2252796953e9b8144497db409ca10f55a080a7f6da13af557316e6dd9ae3. 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/4b62ce87-4d52-45eb-9d17-77e1495143c4.json and https://artists.proofprofile.net/proofs/artist/4b62ce87-4d52-45eb-9d17-77e1495143c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe81e56b57d81319d4e8265f3ea925d5b6e5aa35ac3448ebd9dc008d02f8d8fb1","isrc":"QM4TX1837271","name":"Beneath the Glow","registered_at":"2026-06-29T03:49:36Z","spotify_id":"76FoCtcXvmkz66XNzicdXZ","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 0xe81e56b57d81319d4e8265f3ea925d5b6e5aa35ac3448ebd9dc008d02f8d8fb1. 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/76FoCtcXvmkz66XNzicdXZ.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/76FoCtcXvmkz66XNzicdXZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6b39d7b4497f9f7309231781689a1e0aa1358ecf055b3c0b86507e24526752. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4XgoERYS1XarhgvT1FCi97.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/4XgoERYS1XarhgvT1FCi97.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78adc766956fc5470f26f8a5e56650c7923f65a87e7fcaa6a374d1eba19ffce1. 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/31lQqccroHQRfnWNe8phhQ.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/31lQqccroHQRfnWNe8phhQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35132bcf6371c22211d992e0ce365d8a6a815ad9d151e7f54ba323ad3d2b8dc1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1oR4RosrlYgOj6F693IHUj.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/1oR4RosrlYgOj6F693IHUj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf821a857d99103ebf84ddb5d06c95bfc081a47a916a4b5f0f2cf85621fdcfd17. 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/227jTRlttZd3Qjoe1cdtmb.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/227jTRlttZd3Qjoe1cdtmb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68839f605b7ca183430f5548ced7a64f0174872d0de1ab1ccc3e9ae502b3786. 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/3uQpmjnjCDpWs67No1tNap.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/3uQpmjnjCDpWs67No1tNap.
{"copyright_id":"0x3f2063b1be3d99aeab9d026a49911f064748215c2cece57ef77eccc4edfd706b","isrc":"US23A1539123","name":"Cheque Came","registered_at":"2026-06-11T13:34:58Z","spotify_id":"0uIZmG6BkJqIAaMd8QbHy5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2063b1be3d99aeab9d026a49911f064748215c2cece57ef77eccc4edfd706b. 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/0uIZmG6BkJqIAaMd8QbHy5.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/0uIZmG6BkJqIAaMd8QbHy5.
I Know Something You Did (feat. Jesse James Solomon & ELIZA)
None Of Us Are Getting Out Of This Life Alive
{"copyright_id":"0xe5fa74cd5b4870043c4039d9345625a575922471514f9d77902ffab04657a4b6","isrc":"GBUM72000982","name":"I Know Something You Did (feat. Jesse James Solomon & ELIZA)","registered_at":"2026-06-08T10:41:56Z","spotify_id":"7imcDERt3KiKPFa77bb32z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fa74cd5b4870043c4039d9345625a575922471514f9d77902ffab04657a4b6. 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/7imcDERt3KiKPFa77bb32z.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/7imcDERt3KiKPFa77bb32z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33cb61f965d82ee840e3ac179162b2cc655e659a10497d63e7b914a84640428. 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/6KgCi96XoWKcWKFAVHTpLB.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/6KgCi96XoWKcWKFAVHTpLB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02b7d2c4ace1f34f3a74ec79761d6127959e4b346488c5a5427a8cfcc099870. 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/0M5Ph2gDinyMIqVlBhB3Yy.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/0M5Ph2gDinyMIqVlBhB3Yy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37964515862ab0295e1bb5d9dc535e8609e378717d250b7812e821449b6ff28d. 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/7sbfuUziRkauoUCaeNFgsG.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/7sbfuUziRkauoUCaeNFgsG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37964515862ab0295e1bb5d9dc535e8609e378717d250b7812e821449b6ff28d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6uaqPuTfmT0VmynaXYiZbW.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/6uaqPuTfmT0VmynaXYiZbW.