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 0x023b3a063f95ae06190ac7506c62d9cbc994b465e320107e0217932af0a67368. 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/5a68eb2c-71be-447e-b86e-1b565243da24.json and https://artists.proofprofile.net/proofs/artist/5a68eb2c-71be-447e-b86e-1b565243da24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x90052b5f081be2f9b8edab2c5b86cd5f4f8d8ee41227888dbd424fdeade16f37","isrc":"US4GE0600023","name":"North American Scum","registered_at":"2026-06-04T07:01:59Z","spotify_id":"29ufIwomYfLbWBxPMdaUZm","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 0x90052b5f081be2f9b8edab2c5b86cd5f4f8d8ee41227888dbd424fdeade16f37. 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/29ufIwomYfLbWBxPMdaUZm.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/29ufIwomYfLbWBxPMdaUZm.
{"copyright_id":"0xb4db07e18b6a0e5e6df57205405a501209a89716bcd35bf6d599adacc7f2a17d","isrc":"US4GE1000019","name":"Dance Yrself Clean","registered_at":"2026-06-01T09:38:59Z","spotify_id":"2cmRpmO04TLaKPzmAzySYZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4db07e18b6a0e5e6df57205405a501209a89716bcd35bf6d599adacc7f2a17d. 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/2cmRpmO04TLaKPzmAzySYZ.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/2cmRpmO04TLaKPzmAzySYZ.
{"copyright_id":"0x1df902b6b181671fbeb3bf08cdd4be80a8c667bb1dc067525d9dca1cd2c30d40","isrc":"US4GE1000020","name":"Drunk Girls","registered_at":"2026-06-04T10:56:56Z","spotify_id":"0IUAugkLGELvtFJfzPn2vi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df902b6b181671fbeb3bf08cdd4be80a8c667bb1dc067525d9dca1cd2c30d40. 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/0IUAugkLGELvtFJfzPn2vi.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/0IUAugkLGELvtFJfzPn2vi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1250256f9793c6d508fa69a2377ef5b4dbee0158bc577151030265f5e161ff59. 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/6nlmCGmPBYfdKnMpavObQm.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/6nlmCGmPBYfdKnMpavObQm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f4d233fe57eeb9f0eac7e1e4fb1c21d6022751cd0c601d39b2d9d11967d3b1. 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/4Cy0NHJ8Gh0xMdwyM9RkQm.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/4Cy0NHJ8Gh0xMdwyM9RkQm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8979f9367d2fa75c3a0207d20dce11874a7c2e19a3cf79ce9852186a5ef3a8. 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/2073QOEC8rBtSyTsRyaWiP.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/2073QOEC8rBtSyTsRyaWiP.
{"copyright_id":"0x2bb4335f38c92d66f4bee7c4d39a6bf7f56df82d3e6b415faeaf1e6a6fdaca12","isrc":"US4GE1000024","name":"You Wanted a Hit","registered_at":"2026-06-04T10:28:20Z","spotify_id":"3fU0407Cls1hLW1ap5w2Lr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb4335f38c92d66f4bee7c4d39a6bf7f56df82d3e6b415faeaf1e6a6fdaca12. 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/3fU0407Cls1hLW1ap5w2Lr.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/3fU0407Cls1hLW1ap5w2Lr.
{"copyright_id":"0xc17f67b6d1a9c2ab32a9cd847ace1ed3c50c76e38bc037941ed68420ece31535","isrc":"US4GE1000025","name":"Pow Pow","registered_at":"2026-06-05T07:34:38Z","spotify_id":"3VhBuvzzuGUuh7nyJJvGLk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17f67b6d1a9c2ab32a9cd847ace1ed3c50c76e38bc037941ed68420ece31535. 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/3VhBuvzzuGUuh7nyJJvGLk.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/3VhBuvzzuGUuh7nyJJvGLk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a16894ef1decc66b14ce53b2831802082712c78f024e0d4795953e51d91136. 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/4NiwTsBlFT7H2OMpUbadwL.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/4NiwTsBlFT7H2OMpUbadwL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4ad4d6903e9917de5f2700f08039fb8024822a5ec5bfb267e0d0fdd670cb47. 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/5gmv3BgePSYiHnPJgY7oTJ.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/5gmv3BgePSYiHnPJgY7oTJ.
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