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 0x746ad8b9d3d175f88d538e26c6555d6fa81979b39ff6506f865868398fee0179. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef19dc2f-8a52-4039-a3c9-00e2abeb53b8.json and https://artists.proofprofile.net/proofs/artist/ef19dc2f-8a52-4039-a3c9-00e2abeb53b8.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 0x662ba09c8b69c29a863173f384df62774aff17df3ec40d830651d51ff35264f1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2lyqL2DD2EFILqvCBAhoMW.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/2lyqL2DD2EFILqvCBAhoMW.
{"copyright_id":"0xdadb037794ffbdab94e4b5e9c0549c0eaed195a97cbfd37087a1355202a8955f","isrc":"ARF411800411","name":"Would I Lie to You? - Reggae Version","registered_at":"2026-06-08T04:38:10Z","spotify_id":"5VqoJfmuqDOkpoLP4UCn0r","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadb037794ffbdab94e4b5e9c0549c0eaed195a97cbfd37087a1355202a8955f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5VqoJfmuqDOkpoLP4UCn0r.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/5VqoJfmuqDOkpoLP4UCn0r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98ad673e3d203bf9d576a4a2a925d9ae97acba76e98b476cec3dd4d49058aa7. 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/5RVejcdgjuOEAb8kfI6qQD.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/5RVejcdgjuOEAb8kfI6qQD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd518a673b9a9329b67f38ee8fe0159ca958ce3d2d22161c96e56658166055343. 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/31sYMgmrVjJFV47TUZso61.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/31sYMgmrVjJFV47TUZso61.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb313752bcb0b574d455c629470bebe988ae5eaf93e190b6b20c1f4d4898c7b4d. 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/3bt5BoJeIjip3doHB0O2PS.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/3bt5BoJeIjip3doHB0O2PS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98ad673e3d203bf9d576a4a2a925d9ae97acba76e98b476cec3dd4d49058aa7. 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/3LQ4v0rJtl4yGAi7j6CYg8.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/3LQ4v0rJtl4yGAi7j6CYg8.
{"copyright_id":"0xdadb037794ffbdab94e4b5e9c0549c0eaed195a97cbfd37087a1355202a8955f","isrc":"ARF411800411","name":"Would I Lie to You? - Reggae Version","registered_at":"2026-06-08T04:38:10Z","spotify_id":"4sKPF489U2UIyS8WWEwbdR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadb037794ffbdab94e4b5e9c0549c0eaed195a97cbfd37087a1355202a8955f. 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/4sKPF489U2UIyS8WWEwbdR.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/4sKPF489U2UIyS8WWEwbdR.
{"copyright_id":"0x6723af1ad234ddc893e360af4e8fdb5f14b12a3261ee74057567bcc6eab734b9","isrc":"ARF412100189","name":"Foreign Affair","registered_at":"2026-06-10T05:31:31Z","spotify_id":"1hHeC95fcYlvRVQDIxR4NJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6723af1ad234ddc893e360af4e8fdb5f14b12a3261ee74057567bcc6eab734b9. 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/1hHeC95fcYlvRVQDIxR4NJ.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/1hHeC95fcYlvRVQDIxR4NJ.
{"copyright_id":"0x08ed5ffebf5ba169349ddba6289042133acedeb4bd0f4dcaf586f1d26d9579e9","isrc":"ARF411900313","name":"Wake Me Up - Reggae Mix","registered_at":"2026-06-09T19:02:04Z","spotify_id":"3Xq8yNyBgKRNmy8NxcYHRy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ed5ffebf5ba169349ddba6289042133acedeb4bd0f4dcaf586f1d26d9579e9. 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/3Xq8yNyBgKRNmy8NxcYHRy.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/3Xq8yNyBgKRNmy8NxcYHRy.
{"copyright_id":"0xa3669c7938a2379d82a6a847fec02fc939f4b843b5a74dcbc1bcaab319e31efc","isrc":"ARF412000111","name":"Habits (Stay High)","registered_at":"2026-06-11T14:32:01Z","spotify_id":"2gqERWL1WTmfwZ18VCwVEB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3669c7938a2379d82a6a847fec02fc939f4b843b5a74dcbc1bcaab319e31efc. 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/2gqERWL1WTmfwZ18VCwVEB.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/2gqERWL1WTmfwZ18VCwVEB.
{"copyright_id":"0xfdd35bfae18d5ff67d6e4850eaeac2b3fd990a04d575b367f0aa229b0281dbb5","isrc":"ARF412000210","name":"Doin' Time","registered_at":"2026-06-09T18:59:43Z","spotify_id":"4M3D6MUq6VD8uJGWKEHpE1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd35bfae18d5ff67d6e4850eaeac2b3fd990a04d575b367f0aa229b0281dbb5. 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/4M3D6MUq6VD8uJGWKEHpE1.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/4M3D6MUq6VD8uJGWKEHpE1.
{"copyright_id":"0xb123ecac68601178757a3ccd913486eb099754f55cdf06d41c5ba0001a63bfc0","isrc":"ARF412100303","name":"Malibu - Beach Life Mix","registered_at":"2026-06-04T14:28:12Z","spotify_id":"7elgEwIzUmO4jIkL6uYlmY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb123ecac68601178757a3ccd913486eb099754f55cdf06d41c5ba0001a63bfc0. 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/7elgEwIzUmO4jIkL6uYlmY.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/7elgEwIzUmO4jIkL6uYlmY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d558bec30d8cda365b4025bfd9847a83f03350aa1d13bf3c4f561de29d745f5. 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/36yZcEBifWqWVbWWHL5XfS.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/36yZcEBifWqWVbWWHL5XfS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1c072b563f7842da0460c60557dae5600daf3df42fcdeb5edcdd5454c15aab. 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/0JpUiIX7PTxfIHhXjcJwi9.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/0JpUiIX7PTxfIHhXjcJwi9.
{"copyright_id":"0x54bf6a99bf5845dc7b5f4b2ec2390b6f98adca7af8d1f3cd81cef464ef827306","isrc":"ARF410500011","name":"Start Me Up / Brown Sugar - Remix","registered_at":"2026-06-08T13:22:32Z","spotify_id":"0thKN2Aa8HqtqA0qfPRcUr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bf6a99bf5845dc7b5f4b2ec2390b6f98adca7af8d1f3cd81cef464ef827306. 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/0thKN2Aa8HqtqA0qfPRcUr.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/0thKN2Aa8HqtqA0qfPRcUr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d558bec30d8cda365b4025bfd9847a83f03350aa1d13bf3c4f561de29d745f5. 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/1nOXs0jTTgaqKnHrKB1GjO.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/1nOXs0jTTgaqKnHrKB1GjO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb313752bcb0b574d455c629470bebe988ae5eaf93e190b6b20c1f4d4898c7b4d. 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/2FPUpKYJv1vahQVJwI8o41.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/2FPUpKYJv1vahQVJwI8o41.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd4f2857467cc2c0b1926af4d1699e9702e46c889ba292e82dfb24a3ef31012. 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/0ESgGKE9paFCYpYJvv2rha.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/0ESgGKE9paFCYpYJvv2rha.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662ba09c8b69c29a863173f384df62774aff17df3ec40d830651d51ff35264f1. 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/0h7DkfKTcJQjk6GLuttOuF.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/0h7DkfKTcJQjk6GLuttOuF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd518a673b9a9329b67f38ee8fe0159ca958ce3d2d22161c96e56658166055343. 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/2176B7LZUHmc5dfPS1IaRp.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/2176B7LZUHmc5dfPS1IaRp.
Acoustic Clubbin' - The Complete Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1c072b563f7842da0460c60557dae5600daf3df42fcdeb5edcdd5454c15aab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6yosygPwBF6Cv3qkjxNH5D.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/6yosygPwBF6Cv3qkjxNH5D.
Chill out Trilogy: The Definitive Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1c072b563f7842da0460c60557dae5600daf3df42fcdeb5edcdd5454c15aab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1Jdbq8nXHgv0ExLsOwqv6x.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/1Jdbq8nXHgv0ExLsOwqv6x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd4f2857467cc2c0b1926af4d1699e9702e46c889ba292e82dfb24a3ef31012. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2EDuvNUVwswuOTXyhygLWg.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/2EDuvNUVwswuOTXyhygLWg.
{"copyright_id":"0xf71ceb5e01deed0304177551cc8f51b9ef40e2780e30cac04a1732b5edd81eaf","isrc":"ARF412400178","name":"Our Love","registered_at":"2026-06-22T05:17:46Z","spotify_id":"6atfknSBz9lmsgG9fF6gvC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71ceb5e01deed0304177551cc8f51b9ef40e2780e30cac04a1732b5edd81eaf. 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/6atfknSBz9lmsgG9fF6gvC.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/6atfknSBz9lmsgG9fF6gvC.
Vintage Café: Lounge and Jazz Blends, Vol. 24
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd4f2857467cc2c0b1926af4d1699e9702e46c889ba292e82dfb24a3ef31012. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4ahLDPJKpqsCbIqFBiSpbE.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/4ahLDPJKpqsCbIqFBiSpbE.
{"copyright_id":"0xdadb037794ffbdab94e4b5e9c0549c0eaed195a97cbfd37087a1355202a8955f","isrc":"ARF411800411","name":"Would I Lie to You? - Reggae Version","registered_at":"2026-06-08T04:38:10Z","spotify_id":"53WaSzrse5PRFaaFI07DYZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadb037794ffbdab94e4b5e9c0549c0eaed195a97cbfd37087a1355202a8955f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/53WaSzrse5PRFaaFI07DYZ.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/53WaSzrse5PRFaaFI07DYZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1c072b563f7842da0460c60557dae5600daf3df42fcdeb5edcdd5454c15aab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0eSNKLp9G2Baz91coTERv8.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/0eSNKLp9G2Baz91coTERv8.