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 0xdac2510c862ecbac7df511ef31a315a3d65b1d39a705087b33968f75ee043955. 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/973da3d5-4b6d-4c7f-8744-144a8c6ad47f.json and https://artists.proofprofile.net/proofs/artist/973da3d5-4b6d-4c7f-8744-144a8c6ad47f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Margaritas y Lavanda (Versión extendida)
Haría Lo Que Fuera (Menos Lo Que Tú Quieras)
{"copyright_id":"0xe3edc30dd51a24b6fda3661e607c149afcec023ff77cad19cccae387a61ccf6b","isrc":"ES71G2414756","name":"Ya Lo Sé, Otra Vez","registered_at":"2026-06-29T15:18:28Z","spotify_id":"6Zd6cgtsiIXntU4miu5zJz","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 0xe3edc30dd51a24b6fda3661e607c149afcec023ff77cad19cccae387a61ccf6b. 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/6Zd6cgtsiIXntU4miu5zJz.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/6Zd6cgtsiIXntU4miu5zJz.
{"copyright_id":"0xd2fcd719b2bbef3b5e37ac78fdbb79d4728426f6c95ca830024b858800d4aefd","isrc":"ES71G2304823","name":"Amaiera (Lo Que Te Espera)","registered_at":"2026-06-29T15:22:25Z","spotify_id":"4u7nUFHhRqw0KzKmgxyJMv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fcd719b2bbef3b5e37ac78fdbb79d4728426f6c95ca830024b858800d4aefd. 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/4u7nUFHhRqw0KzKmgxyJMv.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/4u7nUFHhRqw0KzKmgxyJMv.
{"copyright_id":"0xbde0f51f9719deee211d0c4a6a2fbf9748d9df459def8a9be3b5ff53945fb62d","isrc":"ES65D2300015","name":"Drama en el Sonorama","registered_at":"2026-06-07T16:05:17Z","spotify_id":"6YECG3M5s34ubHJF69qfYj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde0f51f9719deee211d0c4a6a2fbf9748d9df459def8a9be3b5ff53945fb62d. 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/6YECG3M5s34ubHJF69qfYj.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/6YECG3M5s34ubHJF69qfYj.
{"copyright_id":"0xd9520a0ff0f2967df8486aee032331b5ca141a8aa50a48d4fefa8dfbadceece4","isrc":"TCAHQ2343051","name":"Save Your Tears","registered_at":"2026-06-05T22:59:24Z","spotify_id":"3CeeJL6VpKPnnvoAbFO4m7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9520a0ff0f2967df8486aee032331b5ca141a8aa50a48d4fefa8dfbadceece4. 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/3CeeJL6VpKPnnvoAbFO4m7.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/3CeeJL6VpKPnnvoAbFO4m7.
{"copyright_id":"0xbde0f51f9719deee211d0c4a6a2fbf9748d9df459def8a9be3b5ff53945fb62d","isrc":"ES65D2300015","name":"Drama en el Sonorama","registered_at":"2026-06-07T16:05:17Z","spotify_id":"4tDilCqVje9Wdx9a9USlPS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde0f51f9719deee211d0c4a6a2fbf9748d9df459def8a9be3b5ff53945fb62d. 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/4tDilCqVje9Wdx9a9USlPS.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/4tDilCqVje9Wdx9a9USlPS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9c936a5581563c7b975653c57cd064aa97f628e132feed0414f6f9a4a81484. 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/6KlSv1vsUDJODlW4qXYrYj.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/6KlSv1vsUDJODlW4qXYrYj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9c936a5581563c7b975653c57cd064aa97f628e132feed0414f6f9a4a81484. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6VLcILZCLCDk0dqclCdmyj.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/6VLcILZCLCDk0dqclCdmyj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50d441085dcbd60f1651d241db61be813c5113df3804a03e717541d7fa85148. 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/3OWFbhHPjbbq3z9fwaXQKh.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/3OWFbhHPjbbq3z9fwaXQKh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50d441085dcbd60f1651d241db61be813c5113df3804a03e717541d7fa85148. 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/4HyzCLqMmWqXlfkfQktei1.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/4HyzCLqMmWqXlfkfQktei1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79357161cc87ee02c005773d876d4e5dbd55f7c6f56c9fdd0097937a2380ed71. 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/2I3M61Zw5tEoC4VIQ4C1yw.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/2I3M61Zw5tEoC4VIQ4C1yw.
{"copyright_id":"0x16d141c368d5748fdeb7e9b2c65413f0f0dec8c22fd00c0415d7d566b57d8dc5","isrc":"ES71G2422804","name":"Zure Ostean / Després de tu","registered_at":"2026-06-24T15:18:46Z","spotify_id":"0rsZwdnx6LrOKt54EI7UuM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d141c368d5748fdeb7e9b2c65413f0f0dec8c22fd00c0415d7d566b57d8dc5. 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/0rsZwdnx6LrOKt54EI7UuM.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/0rsZwdnx6LrOKt54EI7UuM.