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 0xe327e25326ef7e46ebcec2f864a589fd5db4a32ba67b225ac37bbf45f08b2886. 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/46af2135-4604-46d4-bd8a-3d2521b412db.json and https://artists.proofprofile.net/proofs/artist/46af2135-4604-46d4-bd8a-3d2521b412db.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 0x1d93d1eba89870dfe0b64e01d8d2380f871f124a5174c1837e1f5213f9ed82d3. 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/5BegwKdwLRbc6BSwkozA99.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/5BegwKdwLRbc6BSwkozA99.
{"copyright_id":"0x76ff31be8d2f1a038918aeec4eaefd31346108c9790055a62bc357f0a4cf59d2","isrc":"COF019500679","name":"Ponchito de Colores - Instrumental","registered_at":"2026-06-10T03:49:27Z","spotify_id":"3aYn9WsTIhWo916cXux1BY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ff31be8d2f1a038918aeec4eaefd31346108c9790055a62bc357f0a4cf59d2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3aYn9WsTIhWo916cXux1BY.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/3aYn9WsTIhWo916cXux1BY.
Afrosound Nro. 1: El Guayabo De La Ye / El Pávido Návido / El Polvorete / El Turco Perro
Mosaico Afrosound Nro 1: El Guayabo de la Yé, El Pavido Navido, El Polvorete, El Turco Perro
{"copyright_id":"0x9bb3737e7eb835ced02dcf927b4253b1f1c104ea602849b6981fca693d447b5a","isrc":"COF019900545","name":"El Pesebre - Instrumental","registered_at":"2026-06-24T08:52:55Z","spotify_id":"41lEokwBxjAi2ijttm5ziK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb3737e7eb835ced02dcf927b4253b1f1c104ea602849b6981fca693d447b5a. 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/41lEokwBxjAi2ijttm5ziK.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/41lEokwBxjAi2ijttm5ziK.
Historia Musical de Afrosound: 40 Éxitos
{"copyright_id":"0x9bb3737e7eb835ced02dcf927b4253b1f1c104ea602849b6981fca693d447b5a","isrc":"COF019900545","name":"El Pesebre - Instrumental","registered_at":"2026-06-24T08:52:55Z","spotify_id":"3oA3adInsQSTMdzKF1Zxq3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb3737e7eb835ced02dcf927b4253b1f1c104ea602849b6981fca693d447b5a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3oA3adInsQSTMdzKF1Zxq3.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/3oA3adInsQSTMdzKF1Zxq3.
{"copyright_id":"0x71cbc614cef8c6433342f5cd432bf5f661f552eebe7f487812e1be0d2bedc72e","isrc":"COF019500548","name":"Agüita e Coco - Instrumental","registered_at":"2026-06-26T16:52:06Z","spotify_id":"0aff1qBAbm20IrUxrSfAwW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cbc614cef8c6433342f5cd432bf5f661f552eebe7f487812e1be0d2bedc72e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0aff1qBAbm20IrUxrSfAwW.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/0aff1qBAbm20IrUxrSfAwW.
El Burrito de Belén / el Mecánico / el Año Viejo / Cinco Pa las Doce
En Navidad: Grandes Éxitos de Todos los Tiempos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93d1eba89870dfe0b64e01d8d2380f871f124a5174c1837e1f5213f9ed82d3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2XZRSlhBo1rdGQAqBbKLk9.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/2XZRSlhBo1rdGQAqBbKLk9.
Rescatando los Exitos Originales del Long Play
Afrosound Nro. 1: el Guayabo de la Ye / el Pavido Navido / el Polvorete / el Turco Perro (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4038d6d11ced1eec86483d659f0a3b11468e2a1986630a17990a31897f30780f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3kp8PWI5Ih1YmKx8iXrEdB.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/3kp8PWI5Ih1YmKx8iXrEdB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4038d6d11ced1eec86483d659f0a3b11468e2a1986630a17990a31897f30780f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6rNPjURRP1eDT6PGiIxeCt.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/6rNPjURRP1eDT6PGiIxeCt.
{"copyright_id":"0x76ff31be8d2f1a038918aeec4eaefd31346108c9790055a62bc357f0a4cf59d2","isrc":"COF019500679","name":"Ponchito de Colores","registered_at":"2026-06-10T03:49:27Z","spotify_id":"3SsHvYufv2TZyjQCM6PgQC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ff31be8d2f1a038918aeec4eaefd31346108c9790055a62bc357f0a4cf59d2. 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/3SsHvYufv2TZyjQCM6PgQC.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/3SsHvYufv2TZyjQCM6PgQC.
Narcos, Vol. 2 (More Music from the Netflix Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb232f7c0b4335c5e809fecd64c79703974712306bbf329d79788c34aa210de6. 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/5P1vcUYy4BxJA1jWpSXPia.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/5P1vcUYy4BxJA1jWpSXPia.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f21a4023e75fae20b5b0f3652e871d6beb14aaedf1828a6154671125ccf2e4d. 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/5y1haTIDLjyTmBrsIWWtbv.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/5y1haTIDLjyTmBrsIWWtbv.
{"copyright_id":"0x71cbc614cef8c6433342f5cd432bf5f661f552eebe7f487812e1be0d2bedc72e","isrc":"COF019500548","name":"Aguita E' Coco","registered_at":"2026-06-26T16:52:06Z","spotify_id":"0iNHbeJgxut9NeAayN7x8T","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cbc614cef8c6433342f5cd432bf5f661f552eebe7f487812e1be0d2bedc72e. 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/0iNHbeJgxut9NeAayN7x8T.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/0iNHbeJgxut9NeAayN7x8T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f21a4023e75fae20b5b0f3652e871d6beb14aaedf1828a6154671125ccf2e4d. 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/6qAMIiY5PxNJsQDZmkLXEk.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/6qAMIiY5PxNJsQDZmkLXEk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0510fbae9098a485cc88d46661e53cde36a570eabe3418f232e4d131eb331b3. 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/6seTHg5eK7I0BdZCGHULMN.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/6seTHg5eK7I0BdZCGHULMN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c10388c808fb444f14ad790386e2b6fd8cab1bca5db13442184018850b35c4. 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/0W7fkucqPWBzCBregruAum.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/0W7fkucqPWBzCBregruAum.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb3737e7eb835ced02dcf927b4253b1f1c104ea602849b6981fca693d447b5a. 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/7yhHcTRlCllpopnBZXP4wl.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/7yhHcTRlCllpopnBZXP4wl.
{"copyright_id":"0xf0510fbae9098a485cc88d46661e53cde36a570eabe3418f232e4d131eb331b3","isrc":"COF019500613","name":"Mar de Emociones","registered_at":"2026-06-20T03:18:35Z","spotify_id":"1RDY3ANOsK3FBGqcXjscxL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0510fbae9098a485cc88d46661e53cde36a570eabe3418f232e4d131eb331b3. 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/1RDY3ANOsK3FBGqcXjscxL.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/1RDY3ANOsK3FBGqcXjscxL.