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 0x95d88d8e881984e27d9e052e9131922a0c970225e714c31fd6dbfa82ee268b48. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddf20ceb-30a4-4219-ad33-82dbaf3426a0.json and https://artists.proofprofile.net/proofs/artist/ddf20ceb-30a4-4219-ad33-82dbaf3426a0.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 0xf887ee7e6a276f2cbb3b50e8681619c479bd647f8e978bd793266e1d38fe2276. 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/1ofRC4OLgQeL7t7cHLU5JT.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/1ofRC4OLgQeL7t7cHLU5JT.
{"copyright_id":"0xad74998e978ce8dc44cb2a3dc01805f114c57384e65277046c9fcccca6320a0e","isrc":"ES5022301072","name":"SARA SOCAS #01 AFTER HOUR THE MIXTAPE","registered_at":"2026-06-21T18:44:58Z","spotify_id":"2hQH7jaRtw9BSYFZ8MUrJr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad74998e978ce8dc44cb2a3dc01805f114c57384e65277046c9fcccca6320a0e. 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/2hQH7jaRtw9BSYFZ8MUrJr.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/2hQH7jaRtw9BSYFZ8MUrJr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6c12e5401006efd2c7971060bd499b8fbc7bf7f40807c889cc33532dfe6520. 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/0t5A8lyyMnEnFOYDsobAg7.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/0t5A8lyyMnEnFOYDsobAg7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62432549ccc571150162d661d0b9c652f629f60de123f5d50f9598898a8c03f. 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/3zp6r1HpZfD98H36ZRVFrz.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/3zp6r1HpZfD98H36ZRVFrz.
Sara Socas Vs Mr Ego - FMS ESPAÑA T5 2021-2022 Jornada 5 (Live)
{"copyright_id":"0xd32c0e1fddb77d4cb29b5b64926f1b5cca01c15b4309c5b594847f253a54e104","isrc":"ES71G2226556","name":"Beat Mode Sara Socas - Live","registered_at":"2026-06-05T11:14:14Z","spotify_id":"10nIbztvQYxPfp5KPjam2k","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32c0e1fddb77d4cb29b5b64926f1b5cca01c15b4309c5b594847f253a54e104. 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/10nIbztvQYxPfp5KPjam2k.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/10nIbztvQYxPfp5KPjam2k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e004e8235477890a67e2915ff63cf12a96d425cbef8d7ccba69d4382126e42. 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/2le7KDjHiShiddNOhDrYWY.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/2le7KDjHiShiddNOhDrYWY.
Si Se Calla El Cantor (Juntxs por una #CulturaSegura)
{"copyright_id":"0xe19a99c565938456b8e5d702366ab6c0e0d641dafaea7ac670c00d45aa8d55f4","isrc":"ES71G2239309","name":"Si Se Calla El Cantor (Juntxs por una #CulturaSegura)","registered_at":"2026-06-04T11:32:13Z","spotify_id":"6BqT59TsFAWTDppf5WLmOS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19a99c565938456b8e5d702366ab6c0e0d641dafaea7ac670c00d45aa8d55f4. 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/6BqT59TsFAWTDppf5WLmOS.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/6BqT59TsFAWTDppf5WLmOS.
Minuto De Presentación Sara Socas (Live)
Minutos De Presentación - FMS ESP T5 2021-2022 Jornada 2 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72268273c19c7ea6d9dfd0d4d0f14da0caeda867ee1d5c0af7221e61bb05272e. 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/5DBk5uUWxH4Exe1DERvXD8.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/5DBk5uUWxH4Exe1DERvXD8.