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 0xc68e1b51b9b78fac01891c0953d539a7b4dd40accd3c24e54f7b12288df44744. 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/10ad7ba9-d2f6-4c67-83a5-a148cfff7d0a.json and https://artists.proofprofile.net/proofs/artist/10ad7ba9-d2f6-4c67-83a5-a148cfff7d0a.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 0xdeeb6a38c27061699cfe02f3c45041bd0cde5c3cdda0662bdaeabfbef9a7d3c7. 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/1ZdY30vA8tRU3Xi9EEM3iy.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/1ZdY30vA8tRU3Xi9EEM3iy.
{"copyright_id":"0xa01c61fc9302646531e35f617e074bd1a18feb58f77c3e817bfbe8ca9a0b69f6","isrc":"QM24S1704539","name":"Common Ground","registered_at":"2026-06-09T16:54:08Z","spotify_id":"2q6BZGFIet5WrMswrUdTlQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01c61fc9302646531e35f617e074bd1a18feb58f77c3e817bfbe8ca9a0b69f6. 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/2q6BZGFIet5WrMswrUdTlQ.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/2q6BZGFIet5WrMswrUdTlQ.
{"copyright_id":"0x831c1447749f089e2d8eafe8806b122d6a33c65a5feeb7e98b56b03dec1fb2d1","isrc":"SE5VF1800019","name":"When the Bell Tolls","registered_at":"2026-06-08T02:47:03Z","spotify_id":"2FD5OZhhKl4JAg4vGCHdbb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831c1447749f089e2d8eafe8806b122d6a33c65a5feeb7e98b56b03dec1fb2d1. 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/2FD5OZhhKl4JAg4vGCHdbb.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/2FD5OZhhKl4JAg4vGCHdbb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b30e29e61a6cb5cc91c7b0e37d1420ab658014c9f90d50ec96aedd721641482. 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/5aSF5KvmvSkjSK8QOwZ5rK.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/5aSF5KvmvSkjSK8QOwZ5rK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42db467284886da59f708cbad9929af0756d122906d2c405eb77118c31f4d32a. 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/6oFsUGtEpV7qZGyYpQGtJe.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/6oFsUGtEpV7qZGyYpQGtJe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148a5e88585a723e3e6f7df2bc42af1fff014430cd2faa5b86aed8ec24beac29. 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/3kONE8wostDLKAamgrFAOI.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/3kONE8wostDLKAamgrFAOI.
{"copyright_id":"0x78b72dac963ee662946479b4b3ed744280de58fc28baeefba88aa94da7fb890f","isrc":"USUG12102367","name":"I Can't Get By","registered_at":"2026-06-28T18:28:34Z","spotify_id":"6izbzgfvXCReY4zYgvLfMp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b72dac963ee662946479b4b3ed744280de58fc28baeefba88aa94da7fb890f. 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/6izbzgfvXCReY4zYgvLfMp.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/6izbzgfvXCReY4zYgvLfMp.
Hamilton (Original Broadway Cast Recording)
{"copyright_id":"0x1adfa761f68ad37b0345405031ddc5a302ce18f23beec77de0082dd83e72f287","isrc":"USAT21502596","name":"Alexander Hamilton","registered_at":"2026-06-01T05:48:17Z","spotify_id":"4TTV7EcfroSLWzXRY6gLv6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adfa761f68ad37b0345405031ddc5a302ce18f23beec77de0082dd83e72f287. 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/4TTV7EcfroSLWzXRY6gLv6.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/4TTV7EcfroSLWzXRY6gLv6.
{"copyright_id":"0x839c27c0a5a087193ac7e6cefbc2a737e0dc8b4c751a42dae068953e66cc83d1","isrc":"USAT21502624","name":"Schuyler Defeated","registered_at":"2026-06-01T14:11:50Z","spotify_id":"05bhmaAD1urZnQMWNd6p3S","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839c27c0a5a087193ac7e6cefbc2a737e0dc8b4c751a42dae068953e66cc83d1. 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/05bhmaAD1urZnQMWNd6p3S.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/05bhmaAD1urZnQMWNd6p3S.
{"copyright_id":"0xb06320a965915fa1c4a337954294b6dc2f178cb88c30e1ceb090e06d62401728","isrc":"USAT22102643","name":"Home All Summer (from In The Heights)","registered_at":"2026-06-08T02:44:17Z","spotify_id":"57YzzWcqVz4AcQQsIh8pIq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06320a965915fa1c4a337954294b6dc2f178cb88c30e1ceb090e06d62401728. 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/57YzzWcqVz4AcQQsIh8pIq.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/57YzzWcqVz4AcQQsIh8pIq.
If You Want Me To Stay (with Anthony Ramos)
{"copyright_id":"0xd219c9b626876bff8036bdf861b7f1757748d47fca0c78e65ea349f56b8ad1ff","isrc":"USUM72017120","name":"If You Want Me To Stay (with Anthony Ramos)","registered_at":"2026-06-05T21:15:41Z","spotify_id":"177Gk50xMUz4QMiEXLARFP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd219c9b626876bff8036bdf861b7f1757748d47fca0c78e65ea349f56b8ad1ff. 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/177Gk50xMUz4QMiEXLARFP.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/177Gk50xMUz4QMiEXLARFP.
In The Heights (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d75e6c16ee141634cae23a31b028e34d075799bd3be8de02a458dd8f07155cb. 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/7oMr1IBlYwnb1jZh6of8kN.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/7oMr1IBlYwnb1jZh6of8kN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d76483488f1d4d8abc3896d487d92173153dbc6c592f12039b8af84d4251fd. 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/30ihKnt3RsPDevw9y1xWld.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/30ihKnt3RsPDevw9y1xWld.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29012aa5fcae77f12224eebb5938d90d06964341727014969e89829a6d4949ac. 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/0CpE5SeQkHQPYiWX0psxf4.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/0CpE5SeQkHQPYiWX0psxf4.
{"copyright_id":"0x9b46a2d4c1cba5d905a1143d1ef849b25f8e45c9abc8277030835a9f303cfdfc","isrc":"USAT22100945","name":"The Club","registered_at":"2026-06-04T11:51:20Z","spotify_id":"14UKAJBMCPJExAlBQc8ivu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b46a2d4c1cba5d905a1143d1ef849b25f8e45c9abc8277030835a9f303cfdfc. 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/14UKAJBMCPJExAlBQc8ivu.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/14UKAJBMCPJExAlBQc8ivu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6c7d63c187a6c26fe3fa0857c603e7894e360e1c6ad035b52d3a820a09bc6a. 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/0e2SZBDwY2ods2rkb84nmW.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/0e2SZBDwY2ods2rkb84nmW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07e9eddd3ade65baef2e4823eb902d9fff28c687215b794ba136e8613e21b43. 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/5rBlo5Qzr39l4BOKMNSDtC.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/5rBlo5Qzr39l4BOKMNSDtC.
{"copyright_id":"0x8190f35241c3a5a437239957a6d19e126ac7821ca0ed9b927ad45eee0058afc4","isrc":"USAT22100948","name":"Carnaval Del Barrio","registered_at":"2026-06-04T08:51:33Z","spotify_id":"7D0Ntx3LMFMPNtSViJLS4D","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8190f35241c3a5a437239957a6d19e126ac7821ca0ed9b927ad45eee0058afc4. 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/7D0Ntx3LMFMPNtSViJLS4D.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/7D0Ntx3LMFMPNtSViJLS4D.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4af0d8690996a33ca58a7ea77459a4f5cc32d3b673cada7196873d0ec77ba2. 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/2gah9yPIORW56kLHfZpnSn.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/2gah9yPIORW56kLHfZpnSn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc227a56bd2cd8697e64555cceb3054e8ae5010ed9f519a2a96b6b9626d4ec802. 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/1Oqfray85v4J524WdxEzOj.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/1Oqfray85v4J524WdxEzOj.
{"copyright_id":"0x0c0820c9089b292312cf61fee4722c1116ea9cdbe22594a00289e66d50f9c580","isrc":"USAT22100953","name":"Home All Summer (feat. Marc Anthony)","registered_at":"2026-06-05T08:12:14Z","spotify_id":"3wGEwr1nV3btFRfWgh9A7z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0820c9089b292312cf61fee4722c1116ea9cdbe22594a00289e66d50f9c580. 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/3wGEwr1nV3btFRfWgh9A7z.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/3wGEwr1nV3btFRfWgh9A7z.
{"copyright_id":"0x38851e6fe9a40330d6919aaa9a1b24d90cd54c702b6eb6858ea4cbed327f7c27","isrc":"USAT21502597","name":"Aaron Burr, Sir","registered_at":"2026-06-01T06:22:14Z","spotify_id":"6dr7ekfhlbquvsVY8D7gyk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38851e6fe9a40330d6919aaa9a1b24d90cd54c702b6eb6858ea4cbed327f7c27. 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/6dr7ekfhlbquvsVY8D7gyk.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/6dr7ekfhlbquvsVY8D7gyk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e076554cae56b95184fb618af32da40b8ac7a9c82d0e9b0c0e484d422e41006. 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/4cxvludVmQxryrnx1m9FqL.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/4cxvludVmQxryrnx1m9FqL.
{"copyright_id":"0xe78aba3b75c6e57afe439f06c32ea3a3752f971e1a947b383e0559f84946ee04","isrc":"USAT21502599","name":"The Story of Tonight","registered_at":"2026-06-01T07:46:15Z","spotify_id":"0NJWhm3hUwIZSy5s0TGJ8q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78aba3b75c6e57afe439f06c32ea3a3752f971e1a947b383e0559f84946ee04. 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/0NJWhm3hUwIZSy5s0TGJ8q.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/0NJWhm3hUwIZSy5s0TGJ8q.
{"copyright_id":"0x129efe381b18192a33f7fe7e239ee275fb0f65fc8151d2d017255ec8c76d8763","isrc":"USAT21502607","name":"The Story of Tonight - Reprise","registered_at":"2026-06-01T10:34:20Z","spotify_id":"1CzeuSrm71wHP9qsjg7p3F","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129efe381b18192a33f7fe7e239ee275fb0f65fc8151d2d017255ec8c76d8763. 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/1CzeuSrm71wHP9qsjg7p3F.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/1CzeuSrm71wHP9qsjg7p3F.
{"copyright_id":"0x01e752ca570f20a9581b11e5b1901efd6ad6b5c3408335db8ce03a96dbea972c","isrc":"USAT21502610","name":"Ten Duel Commandments","registered_at":"2026-06-01T09:49:41Z","spotify_id":"3lXyAQ0kekAvY5LodpWmUs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e752ca570f20a9581b11e5b1901efd6ad6b5c3408335db8ce03a96dbea972c. 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/3lXyAQ0kekAvY5LodpWmUs.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/3lXyAQ0kekAvY5LodpWmUs.