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 0xe2bdeb8a6c1af3cb8672eabe4c96343b0ffd1bf7eea881348a6575f64b588c6f. 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/f9d144f0-fd76-4da8-a35c-2a851234c828.json and https://artists.proofprofile.net/proofs/artist/f9d144f0-fd76-4da8-a35c-2a851234c828.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x20a01f8808a6b55d918484e7360de589bc2c822e0b67feb971cc5e10289bbd25. 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/4BrPNSWleOaDEe9U8So4Rf.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/4BrPNSWleOaDEe9U8So4Rf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e09206ece55f485b300706b67518c5593f81f6eef96fa5c6cd7fbd8dcf3298. 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/2mqQcw1XIHhoIwxHTQPWzg.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/2mqQcw1XIHhoIwxHTQPWzg.
{"copyright_id":"0x3b2327b3c9bb826197ee411b7729aefaed29a86afa5279301cf61ab0a4e7f0e7","isrc":"TCAEN1903430","name":"Afterski (Yamborghini High 2020)","registered_at":"2026-06-21T11:46:43Z","spotify_id":"4KqjGsj563T46ZDnRhYy0B","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2327b3c9bb826197ee411b7729aefaed29a86afa5279301cf61ab0a4e7f0e7. 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/4KqjGsj563T46ZDnRhYy0B.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/4KqjGsj563T46ZDnRhYy0B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2189c18dfda3a770ec5b65b7b007cb291092b9bed51356583f85530dd3cad4. 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/3zKPqbueKho9TRimRIvjgm.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/3zKPqbueKho9TRimRIvjgm.
{"copyright_id":"0xe4d41fc43498945739da8ed859ba9dd17cfa49a5db5eb14d1e6506c875d8c43e","isrc":"TCAER2052656","name":"Forskjellen 2021","registered_at":"2026-06-22T17:17:18Z","spotify_id":"7smPPeI0lReY6ZxkyPnBJw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d41fc43498945739da8ed859ba9dd17cfa49a5db5eb14d1e6506c875d8c43e. 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/7smPPeI0lReY6ZxkyPnBJw.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/7smPPeI0lReY6ZxkyPnBJw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5903d425c8ef5c177ec4e712234b18549ba8a83968f14f66e032862c2857da3d. 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/2J3EmkgXcyg2lvBxSACf8C.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/2J3EmkgXcyg2lvBxSACf8C.
{"copyright_id":"0x2d57be8de569ba06e90cc00d47580270acefbc37f4e927c604b7108b58a55c92","isrc":"QZK6P2073465","name":"Coka Vanilla (Family Trip 2021)","registered_at":"2026-06-24T23:36:06Z","spotify_id":"0exOgwZF6xu9R7vTlyA6jm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d57be8de569ba06e90cc00d47580270acefbc37f4e927c604b7108b58a55c92. 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/0exOgwZF6xu9R7vTlyA6jm.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/0exOgwZF6xu9R7vTlyA6jm.
{"copyright_id":"0x03631a4a57d67f5996cfbfb3f8b6f5ecbc5d953dd1b553c326dba158c1302d81","isrc":"TCAEN1964610","name":"Dette Her Går Ned (Drunken Sailor 2020)","registered_at":"2026-06-24T20:29:10Z","spotify_id":"2fSU1Z5cbNBtH214iBx6bb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03631a4a57d67f5996cfbfb3f8b6f5ecbc5d953dd1b553c326dba158c1302d81. 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/2fSU1Z5cbNBtH214iBx6bb.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/2fSU1Z5cbNBtH214iBx6bb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054e424d97b7ceb0721008025c990db42a68b2d25381867a9d2d27c9d9b98b61. 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/1wOTWNUvEzCF33FPfnb56f.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/1wOTWNUvEzCF33FPfnb56f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79925a05158faedffe2d14f57a276576a2e53d9f0eaa6e0d91d7962124031eac. 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/0yHHuBxdGeuiI8NnHtnJjo.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/0yHHuBxdGeuiI8NnHtnJjo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2885f83cedb8f8a98e5fa4a86eea330345859fef6ca2408cb440be3b9b364fd3. 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/4bwtD2s8r9zDOadYUMj2pm.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/4bwtD2s8r9zDOadYUMj2pm.
{"copyright_id":"0x7ebdabd7d50bb92cb82d20f8f0ff0f2905d759db8c22b5d9ac5cfc39326d1666","isrc":"TCAEF1904447","name":"Waldo 2019","registered_at":"2026-06-23T17:53:57Z","spotify_id":"5S7ewypbi2HyYKgvGAyEpX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebdabd7d50bb92cb82d20f8f0ff0f2905d759db8c22b5d9ac5cfc39326d1666. 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/5S7ewypbi2HyYKgvGAyEpX.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/5S7ewypbi2HyYKgvGAyEpX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb70670d4304719159e6ae7adeb26392d2a7d49fa6562da38f1ce602efd4276. 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/7xUrflrNZ3Zku0y8E7XS3N.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/7xUrflrNZ3Zku0y8E7XS3N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd618cd0cff2898a8d6498e181fb5abd81563f5aaf3755f2fa0b95726632c5a92. 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/5TU3GrTCRe9ft978tKzhwb.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/5TU3GrTCRe9ft978tKzhwb.
{"copyright_id":"0xf2d4249b2bd47e4ec1b560f3236db140d517cfb0bd578e8f36bff34585196670","isrc":"TCACZ1734402","name":"Atomic Age 2017 (feat. Benjamin Beats)","registered_at":"2026-06-08T06:30:25Z","spotify_id":"6CPihw26WGBEJsLwQMvIc4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d4249b2bd47e4ec1b560f3236db140d517cfb0bd578e8f36bff34585196670. 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/6CPihw26WGBEJsLwQMvIc4.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/6CPihw26WGBEJsLwQMvIc4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc67b11c924d7793bcc25387ac691f399961d2ef1d8590dac76621da910f5921. 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/01C2MeoOppcbAgqb2D0VMi.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/01C2MeoOppcbAgqb2D0VMi.
{"copyright_id":"0xb2d0e05f3cbb2c2774bf10ebd4ceadddfe58c49808c94d536ae1514c11cc486b","isrc":"TCAHO2379871","name":"Whistle 2018","registered_at":"2026-06-20T13:29:59Z","spotify_id":"5Donj2GMnxtnbK8Nl6L1tN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d0e05f3cbb2c2774bf10ebd4ceadddfe58c49808c94d536ae1514c11cc486b. 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/5Donj2GMnxtnbK8Nl6L1tN.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/5Donj2GMnxtnbK8Nl6L1tN.
{"copyright_id":"0xd5459eb8a91b6ee3d9b11b8d2e415012ab6175e8a56fbc3c0a93dcfa64dab303","isrc":"GBSMU3656337","name":"Shottega 2017 (feat. Benjamin Beats)","registered_at":"2026-06-27T18:24:51Z","spotify_id":"4zVuG1LDC9E5lR86SICDs3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5459eb8a91b6ee3d9b11b8d2e415012ab6175e8a56fbc3c0a93dcfa64dab303. 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/4zVuG1LDC9E5lR86SICDs3.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/4zVuG1LDC9E5lR86SICDs3.
Late Registration 2017 (feat. Benjamin Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be89c9a71c3f66809be31e606bc936f0cecd838c9de4069065c1e39c6b293ed. 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/32jaUzlPuUtsIXlMmc66SJ.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/32jaUzlPuUtsIXlMmc66SJ.
{"copyright_id":"0x53fc45ad073b5464a9dcc90ea9c80ee144010da7491dee7ee1aaaeaabb31eda7","isrc":"TCADW1882073","name":"Figaro 2019","registered_at":"2026-06-23T17:55:14Z","spotify_id":"5kHPmjFA84lvuASQymBFAu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fc45ad073b5464a9dcc90ea9c80ee144010da7491dee7ee1aaaeaabb31eda7. 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/5kHPmjFA84lvuASQymBFAu.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/5kHPmjFA84lvuASQymBFAu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d351ed88753291bc0772ea86e5c780a898b9daa261dbd6b864323221f81bbf0. 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/5E0lnATwVCcMTNy6HBCLG5.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/5E0lnATwVCcMTNy6HBCLG5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3295e61045e6c3a0e04ff53b19bf1ef83bcf016b22d88239bd90b4426b75dbfa. 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/2560fO3xOE5k8o220mJkI8.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/2560fO3xOE5k8o220mJkI8.