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 0x4212d6eb6e646a8ec377d8bc76bdc3a33f8bd8a0086224088f97dd2f124107f8. 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/3bdab761-6f51-4471-8f69-fdba4aeb8285.json and https://artists.proofprofile.net/proofs/artist/3bdab761-6f51-4471-8f69-fdba4aeb8285.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe84605484835ffbf59b0ef7ada4376c5e5b8cbf4e5af041fea6c342897f9cf07","isrc":"USDY42424443","name":"Mascaras de Gas","registered_at":"2026-06-08T23:01:39Z","spotify_id":"6DKTMxwJVDPQTDFMTmE2AQ","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 0xe84605484835ffbf59b0ef7ada4376c5e5b8cbf4e5af041fea6c342897f9cf07. 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/6DKTMxwJVDPQTDFMTmE2AQ.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/6DKTMxwJVDPQTDFMTmE2AQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c4296f16b6379cf1b940be6108090255a234f83b7e268c77c994f02694e051. 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/6ByLONUCqdy5VdwniSd6C7.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/6ByLONUCqdy5VdwniSd6C7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756361d6a4c1d5dd9cb80744e130238c7c351b9b72fa29636ce1a4b0ddfc01d7. 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/6iUHkVX5khPY1ON7YYQsO8.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/6iUHkVX5khPY1ON7YYQsO8.
{"copyright_id":"0x475b1d4f33f2d5567cdc4b0ad96906da7752f8ae9ae392eacb906c0729f81c8c","isrc":"USDY42424446","name":"Sentimientos de Papel","registered_at":"2026-06-07T03:28:34Z","spotify_id":"2zEwecN3cGNWtK3yjgWOCz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475b1d4f33f2d5567cdc4b0ad96906da7752f8ae9ae392eacb906c0729f81c8c. 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/2zEwecN3cGNWtK3yjgWOCz.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/2zEwecN3cGNWtK3yjgWOCz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389222c376b4c93c84b56b0e4ba80024ed189347b668c1ca851c9d4e35c998b1. 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/4vB0nm3gAi2fXdxurZC4nK.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/4vB0nm3gAi2fXdxurZC4nK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3392d658808a9278b0781115c4ad807e106615a17f7f7a86028c6b9ce8afdfa. 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/1eTCaFRxjRVRor62JF1dEy.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/1eTCaFRxjRVRor62JF1dEy.
{"copyright_id":"0x7f67d42364b5018092f48b7c6603dfb948adb694166d0397fbe6f0f3326d94a5","isrc":"QZTBB2202483","name":"La Bonita Siempre Mienten","registered_at":"2026-06-09T14:19:07Z","spotify_id":"6Nm4TzE2WGJgzhCeRH4Gqw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f67d42364b5018092f48b7c6603dfb948adb694166d0397fbe6f0f3326d94a5. 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/6Nm4TzE2WGJgzhCeRH4Gqw.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/6Nm4TzE2WGJgzhCeRH4Gqw.
{"copyright_id":"0x884da2f1a1ca6e1f0c5fbf80239aa6fa6bcb22584abd9ae8cd657d78ff514ada","isrc":"GBMA22350134","name":"La Fans","registered_at":"2026-06-06T12:08:22Z","spotify_id":"0pvVtG3urKB8hWoQQJUqB0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884da2f1a1ca6e1f0c5fbf80239aa6fa6bcb22584abd9ae8cd657d78ff514ada. 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/0pvVtG3urKB8hWoQQJUqB0.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/0pvVtG3urKB8hWoQQJUqB0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dbfa4b75754837dfa01626c130ef1f81c78e1bdddbc650ff1123f40ab20d64. 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/3qRjGxRXSQHf5Uo9TM2d5z.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/3qRjGxRXSQHf5Uo9TM2d5z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2bdce7ea55c9c8e1e7729a514c1d5f41dcbbfae198724670cf8e3397525b3a. 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/13wE9u8zVARrozwqR6Wu8S.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/13wE9u8zVARrozwqR6Wu8S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df6ff71133f350f95d6b75a7ac519d3a4a620f1506464a17f5cbd70c5529164. 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/59Cx3h4AP4APP7YH9LMJGm.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/59Cx3h4AP4APP7YH9LMJGm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f67d42364b5018092f48b7c6603dfb948adb694166d0397fbe6f0f3326d94a5. 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/5aPFguseS3ug5F4HI9N054.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/5aPFguseS3ug5F4HI9N054.
{"copyright_id":"0x7d6ee57362985c00b709c9ecfe0795ac95ba8b4715fda472cc2a61442d5689f8","isrc":"QZWDW2460130","name":"Mi Oveja Perdida (Ft. Kevin Ice)","registered_at":"2026-06-08T04:58:45Z","spotify_id":"4tqRT30VJWDkHBArsdQuG7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6ee57362985c00b709c9ecfe0795ac95ba8b4715fda472cc2a61442d5689f8. 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/4tqRT30VJWDkHBArsdQuG7.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/4tqRT30VJWDkHBArsdQuG7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4455a80f5db41083d1a363539f1035c5410187d56157f4ba4e7d9b3ebad73ec6. 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/7wU75j72UHeM4EJG5P67AV.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/7wU75j72UHeM4EJG5P67AV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efb757be1bb5b10648a41e6fceabdeedfa36d66654683eb0565b659300e7073. 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/6LNi262uppn9Gu10IKLKRy.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/6LNi262uppn9Gu10IKLKRy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1106d56a0b94fd090bbbf6c4a35179820b14cb70b7f17cc91ad4327164ad0d70. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:47:25Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0GslrK8akTTwqsUAR634m3.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/0GslrK8akTTwqsUAR634m3.
{"copyright_id":"0x5a64a2b67a52ae32471abf557baae5086b5c66cf2e2a1ae233c9f0b5312cc01c","isrc":"QZK6L2221972","name":"Cinco De Mayo","registered_at":"2026-06-05T17:47:27Z","spotify_id":"4vRJKa8aJSgl5suTcUVooU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a64a2b67a52ae32471abf557baae5086b5c66cf2e2a1ae233c9f0b5312cc01c. 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/4vRJKa8aJSgl5suTcUVooU.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/4vRJKa8aJSgl5suTcUVooU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11284947273f77463b86652946ae6486448283ab3da7b4b6fdf3798444beda9d. 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/0bAZE1d9iMLKlhdz6rLSA2.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/0bAZE1d9iMLKlhdz6rLSA2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86d8fda913767172986ef24ef2792396765f57a819ff72f6f93dd57dfaf7fc5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0l9QxmJKHnLedP7Reuh1C4.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/0l9QxmJKHnLedP7Reuh1C4.
{"copyright_id":"0x884da2f1a1ca6e1f0c5fbf80239aa6fa6bcb22584abd9ae8cd657d78ff514ada","isrc":"GBMA22350134","name":"La Fans","registered_at":"2026-06-06T12:08:22Z","spotify_id":"4XOP9QTS3LLIEYUg918QCp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884da2f1a1ca6e1f0c5fbf80239aa6fa6bcb22584abd9ae8cd657d78ff514ada. 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/4XOP9QTS3LLIEYUg918QCp.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/4XOP9QTS3LLIEYUg918QCp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf8c92b33ca540a0e68e9505d21ecbddc9fa73b8c2d7371a6d835bd5dc6a3db. 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/25U8UKzXcZdCfBjypSNnys.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/25U8UKzXcZdCfBjypSNnys.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535300e902fdf3df846d3c5f4e438e17375dedfbc45644d8d60f7910c36afa55. 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/6vfQcuWveBXTjxckC7KEaC.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/6vfQcuWveBXTjxckC7KEaC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3392d658808a9278b0781115c4ad807e106615a17f7f7a86028c6b9ce8afdfa. 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/44KCjgTLe5dMWFQcN0Y2v6.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/44KCjgTLe5dMWFQcN0Y2v6.
{"copyright_id":"0x7f67d42364b5018092f48b7c6603dfb948adb694166d0397fbe6f0f3326d94a5","isrc":"QZTBB2202483","name":"La Bonita Siempre Mienten","registered_at":"2026-06-09T14:19:07Z","spotify_id":"0g0VhxmrSTpIJBPkfd2yx9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f67d42364b5018092f48b7c6603dfb948adb694166d0397fbe6f0f3326d94a5. 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/0g0VhxmrSTpIJBPkfd2yx9.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/0g0VhxmrSTpIJBPkfd2yx9.
{"copyright_id":"0x5a64a2b67a52ae32471abf557baae5086b5c66cf2e2a1ae233c9f0b5312cc01c","isrc":"QZK6L2221972","name":"Cinco De Mayo","registered_at":"2026-06-05T17:47:27Z","spotify_id":"1kak7EJ8JvFIs6DJnKnooR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a64a2b67a52ae32471abf557baae5086b5c66cf2e2a1ae233c9f0b5312cc01c. 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/1kak7EJ8JvFIs6DJnKnooR.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/1kak7EJ8JvFIs6DJnKnooR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dca039bc5d5846c7a2f23cbcc868648d5052faac76970196aaee08e907f3a9a. 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/3PQEmzbLSAVxRF9SWKOVN0.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/3PQEmzbLSAVxRF9SWKOVN0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389222c376b4c93c84b56b0e4ba80024ed189347b668c1ca851c9d4e35c998b1. 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/2pHKDXTPx6hmDlVUIdHCPw.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/2pHKDXTPx6hmDlVUIdHCPw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6330f0ca10324f37c74ae7a9441e45e721d678d8f9c361018bfc72d5eb031a75. 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/4R31dtVvYTnbFVgzfyR6Lx.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/4R31dtVvYTnbFVgzfyR6Lx.