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 0xedc3810ef4d8f92e1738988956a1075f7e466ece609f5c00bda23337adb7a6ed. 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/f3ea2937-c6d8-4545-8266-fffc972eb922.json and https://artists.proofprofile.net/proofs/artist/f3ea2937-c6d8-4545-8266-fffc972eb922.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x16c04b7c6d5ff7f1d6d78257287d4fddef3bdf68ed0a0dd6211e5cf57a437b45","isrc":"SEXGF2301236","name":"A Warm Rain Shower","registered_at":"2026-06-07T12:07:25Z","spotify_id":"76gHvQJvqmjv0ndwpC8WFh","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 0x16c04b7c6d5ff7f1d6d78257287d4fddef3bdf68ed0a0dd6211e5cf57a437b45. 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/76gHvQJvqmjv0ndwpC8WFh.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/76gHvQJvqmjv0ndwpC8WFh.
{"copyright_id":"0x1f0ca9cdd0ae224764fd6cb8a3406f9222760bb9c4e3ed5d6fa2d56e80bd0f90","isrc":"SEXGF2301235","name":"An Intense Rain Shower","registered_at":"2026-06-04T06:15:26Z","spotify_id":"5Pze5cW4Pl1pvtrvXagAMW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ca9cdd0ae224764fd6cb8a3406f9222760bb9c4e3ed5d6fa2d56e80bd0f90. 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/5Pze5cW4Pl1pvtrvXagAMW.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/5Pze5cW4Pl1pvtrvXagAMW.
{"copyright_id":"0x563dae04bbc2deb3741ebf072b0a26d8db38039649548bd7ecbeff446d11342c","isrc":"SEXGF2392259","name":"White Noise Chill","registered_at":"2026-06-01T09:06:00Z","spotify_id":"5hcvK2YKF1cr7cBNKTCKOW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563dae04bbc2deb3741ebf072b0a26d8db38039649548bd7ecbeff446d11342c. 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/5hcvK2YKF1cr7cBNKTCKOW.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/5hcvK2YKF1cr7cBNKTCKOW.
{"copyright_id":"0xc1c4796a40891ae7951dedac11715292a1b9b871e6f5defeb9cd1e552c782ff2","isrc":"SEXGF2392260","name":"Chill Pill White","registered_at":"2026-06-21T15:11:55Z","spotify_id":"2mAtLgfRm1Vdnqa9ISaMqk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c4796a40891ae7951dedac11715292a1b9b871e6f5defeb9cd1e552c782ff2. 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/2mAtLgfRm1Vdnqa9ISaMqk.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/2mAtLgfRm1Vdnqa9ISaMqk.
{"copyright_id":"0xf535b4f985d01bb75435f94a7bffde134773786f6fd0310fcabfbfd9536a030e","isrc":"SEXGF2392229","name":"Hypnotic Green Noise","registered_at":"2026-06-04T04:17:48Z","spotify_id":"67abugPaIu3AZTbnyE8VsU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf535b4f985d01bb75435f94a7bffde134773786f6fd0310fcabfbfd9536a030e. 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/67abugPaIu3AZTbnyE8VsU.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/67abugPaIu3AZTbnyE8VsU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54c3c87656180f6ab874d211f65db678f368903116dc567812a8a34fa094eef. 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/0nRZSthi3uyx2kOkw3dt4v.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/0nRZSthi3uyx2kOkw3dt4v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cafd67cd1228711d379afdf7172448c15a6a92588d3f5137577be1ac87ef60f. 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/7feU46h5FCm1tp8cb2G8hA.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/7feU46h5FCm1tp8cb2G8hA.
{"copyright_id":"0x893ec9afcb768b3ad67819911cfdf98ef4239eae8b6a5c1054025318fb5a4ebd","isrc":"SEXGF2392112","name":"Hypnotic Pink Calmness","registered_at":"2026-06-01T21:07:03Z","spotify_id":"7f46DzJbwrJiANH9hOZF1s","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893ec9afcb768b3ad67819911cfdf98ef4239eae8b6a5c1054025318fb5a4ebd. 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/7f46DzJbwrJiANH9hOZF1s.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/7f46DzJbwrJiANH9hOZF1s.
{"copyright_id":"0x1df950813953d04664fbca8d84cb20aca490cc67387731b5dcc186aab3ae554e","isrc":"SEXGF2392113","name":"Cosiest Pink Noise","registered_at":"2026-06-01T18:10:52Z","spotify_id":"3AZ4ywx2OIvTakgTRVjwfo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df950813953d04664fbca8d84cb20aca490cc67387731b5dcc186aab3ae554e. 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/3AZ4ywx2OIvTakgTRVjwfo.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/3AZ4ywx2OIvTakgTRVjwfo.
{"copyright_id":"0x2ad00e621e45c8ba1fc64a62058498557f4bda6b7bff7160f5cdf434da8c00c1","isrc":"SEXGF2392048","name":"Green Night Waves","registered_at":"2026-06-04T06:49:17Z","spotify_id":"5WBUZ1USCnHbq7mPHSaMFx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad00e621e45c8ba1fc64a62058498557f4bda6b7bff7160f5cdf434da8c00c1. 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/5WBUZ1USCnHbq7mPHSaMFx.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/5WBUZ1USCnHbq7mPHSaMFx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf716e5fa70986f00252a38f1892089a72935658037e1c14e56ae3a1465e1249b. 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/2VP7RtSDwj76BLDYGQiwvX.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/2VP7RtSDwj76BLDYGQiwvX.
{"copyright_id":"0x9544ed7e03cf235769cf652d25b859a0fd7f12bdb05f835fa16a0e6d0ec02a62","isrc":"SEXGF2392003","name":"Night Crickets - Green Noise","registered_at":"2026-06-24T01:39:07Z","spotify_id":"5VBHOXrzpcg8nSVlFYE068","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9544ed7e03cf235769cf652d25b859a0fd7f12bdb05f835fa16a0e6d0ec02a62. 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/5VBHOXrzpcg8nSVlFYE068.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/5VBHOXrzpcg8nSVlFYE068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc51f3407046352df555d75df7be6f71278f42a13011cb1831797db5a9ab1ff3. 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/5Trwo3UnaX0v8k20YZQRxZ.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/5Trwo3UnaX0v8k20YZQRxZ.
{"copyright_id":"0x26ae24c3c87750d634b3ed3b4cc3ab482721fb5ca957f729375a90a89afb6f46","isrc":"SEXGF2203701","name":"Slow Down Brown Noise","registered_at":"2026-06-08T10:45:26Z","spotify_id":"25Bt4RZcgFc4deXdUIKhQI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae24c3c87750d634b3ed3b4cc3ab482721fb5ca957f729375a90a89afb6f46. 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/25Bt4RZcgFc4deXdUIKhQI.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/25Bt4RZcgFc4deXdUIKhQI.