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 0xc59759d1602e6df17b47efbb4b7a0decc45d05c5f1fcd8b0c878f2259fbf4786. 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/fedb76dc-c6b1-46d8-b393-ac0150bd79ba.json and https://artists.proofprofile.net/proofs/artist/fedb76dc-c6b1-46d8-b393-ac0150bd79ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El eco de la zampona (arr. C. Perri): El Eco de la Zampona
El canto de cuculi (arr. C. Perri): El Canto de Cuculi
Geniko tragoudi (Canto General): Tupamaros
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 0xa838e88e10589521128dfc63b89f43c6cbb453d7a9431694623e24c7404803d1. 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/3qruL7WJMEkds7SmaDqSzP.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/3qruL7WJMEkds7SmaDqSzP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9283bc28a8c5a6ef5fad0f9ce256a005a915512b61628dd97d541bf5e885a3cb. 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/14QJfF3c4LYuC56wVBoPAC.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/14QJfF3c4LYuC56wVBoPAC.
Joel Francisco Perri: Mandolins From Italy - 24 Most Popular Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45c02c21b1df886a365361524ec998aadd2f623324a574affa088a63c375ee9. 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/2RSItaj4tZGj7p5cg2WLxR.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/2RSItaj4tZGj7p5cg2WLxR.
{"copyright_id":"0xb66349fc0215c95e577a2b53c8b9a03cbb990f74a0db9eb2dcca5cc3d7daecdb","isrc":"GBCKG0501042","name":"Tarantella Del Diavolo","registered_at":"2026-06-10T21:12:46Z","spotify_id":"3C9jGb70ireP11rkrhCu7S","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66349fc0215c95e577a2b53c8b9a03cbb990f74a0db9eb2dcca5cc3d7daecdb. 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/3C9jGb70ireP11rkrhCu7S.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/3C9jGb70ireP11rkrhCu7S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188d4fd1bc72a592f845830d17cfe75aaf38fa4914fc4d60a6753159cbce874b. 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/55nve7pRX70PqIWy5ySz4J.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/55nve7pRX70PqIWy5ySz4J.
{"copyright_id":"0xf2510e1e6feacdb8d75f4a2d10c9ebeaa5c652ca25115d366f820b8a621272b8","isrc":"GBCKG0501043","name":"Notte Di Christallo","registered_at":"2026-06-07T15:31:17Z","spotify_id":"1abmb0VnJWzW5SHoCdKArC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2510e1e6feacdb8d75f4a2d10c9ebeaa5c652ca25115d366f820b8a621272b8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1abmb0VnJWzW5SHoCdKArC.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/1abmb0VnJWzW5SHoCdKArC.
{"copyright_id":"0x39ad1abe98b20cbe6c5358a24a8a31bf5ea506703c7eff83c624c9c49b3ebe55","isrc":"GBCKG0502053","name":"Tarantella Di Napoli","registered_at":"2026-06-06T13:08:51Z","spotify_id":"2y8NdsuVxV4nfNUCkRncof","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ad1abe98b20cbe6c5358a24a8a31bf5ea506703c7eff83c624c9c49b3ebe55. 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/2y8NdsuVxV4nfNUCkRncof.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/2y8NdsuVxV4nfNUCkRncof.
{"copyright_id":"0xe65c39c39200032573409433721f2718cdbb99f2be28d99c63aae4aa1c123675","isrc":"GBCKG0501044","name":"Marcia Di Bergamo A Monte Catini","registered_at":"2026-06-07T18:11:12Z","spotify_id":"7fcw0pA0AYt9Arf2kT5pxW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65c39c39200032573409433721f2718cdbb99f2be28d99c63aae4aa1c123675. 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/7fcw0pA0AYt9Arf2kT5pxW.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/7fcw0pA0AYt9Arf2kT5pxW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de4e10e5a6277d612b21550cf9463c269572bf5c93edc6fc951839857f2266f. 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/2rKBznUlCBpQV3guDwpY4F.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/2rKBznUlCBpQV3guDwpY4F.
{"copyright_id":"0xaeeb8fabf424dbb7d591ccfbf29510c063d366383a6e40632677e4a0ac354ccd","isrc":"GBCKG0501045","name":"Piccola Maria","registered_at":"2026-06-05T05:21:16Z","spotify_id":"2gJWm5COGf9MZQEoxDtlLJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeb8fabf424dbb7d591ccfbf29510c063d366383a6e40632677e4a0ac354ccd. 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/2gJWm5COGf9MZQEoxDtlLJ.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/2gJWm5COGf9MZQEoxDtlLJ.
Torna a Surriento (Come Back to Sorrento)
{"copyright_id":"0x880754491d522eaa788620d2b3ed95f3ba0c976690f6279cf32a8dc761eeb7df","isrc":"GBCKG0500402","name":"Torna a Surriento (Come Back to Sorrento)","registered_at":"2026-06-05T18:14:15Z","spotify_id":"4H4bKQdLqkxqUm5McYCgCb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880754491d522eaa788620d2b3ed95f3ba0c976690f6279cf32a8dc761eeb7df. 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/4H4bKQdLqkxqUm5McYCgCb.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/4H4bKQdLqkxqUm5McYCgCb.
{"copyright_id":"0xb0c0a5398fece1862319eea96da9ba5cbc669af3b6f76e419eda1f64c2d00c68","isrc":"GBCKG0501046","name":"Tarantella Meridionale","registered_at":"2026-06-08T14:32:59Z","spotify_id":"7zGzdcSJMRWRz7wf30aWx5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c0a5398fece1862319eea96da9ba5cbc669af3b6f76e419eda1f64c2d00c68. 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/7zGzdcSJMRWRz7wf30aWx5.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/7zGzdcSJMRWRz7wf30aWx5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e3e64f95eac313597b205d5d4d49ce677f658a1aba30d6cbf0c8ef39f448d9. 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/1xbZzzSrE0A13RubvjDcv4.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/1xbZzzSrE0A13RubvjDcv4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfba606258b1fe498b5568f5b35229528fccdb5283f74198ab132d5a5a86e7d2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0CLhDjerWEACTolDQ7yJM9.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/0CLhDjerWEACTolDQ7yJM9.
{"copyright_id":"0x1de1629b8691aa768e3e216e23f5c4b6b8c68385fa241a12ac18d0799f1a1cf0","isrc":"GBCKG0502056","name":"Tarantella Siciliana","registered_at":"2026-06-06T06:18:48Z","spotify_id":"1RCLz4Zy5FOW2r8K5BVXfk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de1629b8691aa768e3e216e23f5c4b6b8c68385fa241a12ac18d0799f1a1cf0. 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/1RCLz4Zy5FOW2r8K5BVXfk.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/1RCLz4Zy5FOW2r8K5BVXfk.
{"copyright_id":"0x7bcc436c19d4b2d2b2b39c84fb267d2263447b034797c4c4eaad9c0030787d41","isrc":"GBCKG0501048","name":"Tarantella Capricciosa","registered_at":"2026-06-24T23:34:51Z","spotify_id":"0uq21mahwyG0JUuEpq9Jo6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcc436c19d4b2d2b2b39c84fb267d2263447b034797c4c4eaad9c0030787d41. 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/0uq21mahwyG0JUuEpq9Jo6.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/0uq21mahwyG0JUuEpq9Jo6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833c3f4a432cd43648daa2112be5baa08f8cd2b81f6779d83fa67840d53861f2. 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/5fG891Xk1b4j8vtAUurwwt.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/5fG891Xk1b4j8vtAUurwwt.
{"copyright_id":"0x4a6b3a5aa749256bed172f5c48448d5f33ffc1dc76eac40ca518b762254c96a6","isrc":"GBCKG0501049","name":"Guaglione - Nisa","registered_at":"2026-06-08T05:45:34Z","spotify_id":"1FSJFBTqaKb6rPK2RYHlg5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b3a5aa749256bed172f5c48448d5f33ffc1dc76eac40ca518b762254c96a6. 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/1FSJFBTqaKb6rPK2RYHlg5.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/1FSJFBTqaKb6rPK2RYHlg5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0798acfdb22cba1c170b48ffc6363c7d16a0814305a124de186483112fc6c8e6. 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/6WZgFaUNDiY8CuxspH9iIw.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/6WZgFaUNDiY8CuxspH9iIw.
{"copyright_id":"0x9db5dfdd21af63d95a624f7d5074328f1a4117461bf3606f0a9e8a1d3ed02744","isrc":"GBCKG0501050","name":"Valsa Della Primavera","registered_at":"2026-06-09T10:47:59Z","spotify_id":"0V6dFn7CAfRP9Kqk83OAvh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db5dfdd21af63d95a624f7d5074328f1a4117461bf3606f0a9e8a1d3ed02744. 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/0V6dFn7CAfRP9Kqk83OAvh.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/0V6dFn7CAfRP9Kqk83OAvh.
{"copyright_id":"0xc4e493237c2a102037bfa707e3378351c8ba13c4e14a0d653fcdfd4e072f4dcf","isrc":"GBCKG0502059","name":"Funiculi Funicula","registered_at":"2026-06-10T14:38:03Z","spotify_id":"1Q7f2wcQp8uPog5zHV5HlB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e493237c2a102037bfa707e3378351c8ba13c4e14a0d653fcdfd4e072f4dcf. 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/1Q7f2wcQp8uPog5zHV5HlB.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/1Q7f2wcQp8uPog5zHV5HlB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93128776e2e4c8474066d6a7e6258c758924652d76dc865ec8e71ce7119c60c5. 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/4ECdfUF8FgVkCIrnNwbRXW.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/4ECdfUF8FgVkCIrnNwbRXW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a91dd6f8e35d18011bb1e359462ce471928c4d72fdc76789ec8848791b40cc1. 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/7HZrdAm7AmPiXx2YOi5dek.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/7HZrdAm7AmPiXx2YOi5dek.
{"copyright_id":"0x7ccad603668d8ccd3beb6e1008dd6685c795ed7bef7051dcc0546462a8c044db","isrc":"GBCKG0501052","name":"Il Padrone - Rota","registered_at":"2026-06-18T05:54:21Z","spotify_id":"6HCCywvQUjSQVECYxBipzL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccad603668d8ccd3beb6e1008dd6685c795ed7bef7051dcc0546462a8c044db. 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/6HCCywvQUjSQVECYxBipzL.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/6HCCywvQUjSQVECYxBipzL.
{"copyright_id":"0x91f217daa583f26cfc36eb0e61ef19218274e50617fcb3a1aacdd97ff0baf419","isrc":"GBCKG0502061","name":"Quanne Ta Fatte Mammeta","registered_at":"2026-06-18T21:31:16Z","spotify_id":"0yrQ2tvDYp8lRbYx2j7O9i","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f217daa583f26cfc36eb0e61ef19218274e50617fcb3a1aacdd97ff0baf419. 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/0yrQ2tvDYp8lRbYx2j7O9i.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/0yrQ2tvDYp8lRbYx2j7O9i.
{"copyright_id":"0xfa9599ae77ade114ccb641d3adb7edbf1ebc8716c09a789cbd5cab876c663e3f","isrc":"GBCKG0501053","name":"Balatta Siciliana","registered_at":"2026-06-07T09:21:44Z","spotify_id":"1SFQlBPn29eQisHlfScn9O","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9599ae77ade114ccb641d3adb7edbf1ebc8716c09a789cbd5cab876c663e3f. 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/1SFQlBPn29eQisHlfScn9O.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/1SFQlBPn29eQisHlfScn9O.
Perri, Joel: Master of the Indian Flutes
Indiencito (Arr. J.F. Perri and C. Perri)
San Juanito de la Esperanza (Arr. C. Perri)
Los Carnevales (Arr. J.F. Perri and C. Perri)
Joel F. Perri and Cedric Perry: The Very Best of Andean Flutes