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 0x8a13c5744b627d609d26bff13f6fc13e62bf33bcbb962c8aa7b0dffa931179ef. 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/a9cb48a3-0d59-4469-ac61-b4923dc7cd18.json and https://artists.proofprofile.net/proofs/artist/a9cb48a3-0d59-4469-ac61-b4923dc7cd18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
...y bailaria la negra? (a Ernesto Lecuona)
Quizás, Quizás, Quizás (Perhaps, Perhaps, Perhaps)
Snails in the Creek (Caracoles En El Riachuelo)
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 0x9f94456419d657afe27639734554d9c3e676ea9d3d92a37708e9a30d076e1307. 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/5zghsMZTgvuZOTWxdYjEQq.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/5zghsMZTgvuZOTWxdYjEQq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997bddd9b21f4c42d3d4429cb18df6736291621b10a64ab87d257d60335c64b5. 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/5vwmWR2BTnCtqWrlHhwQtH.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/5vwmWR2BTnCtqWrlHhwQtH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c77bf6db295b915219d00043390f42e4cf4de13811b4510bc70d3ace4033a2. 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/1m3uOVyv35XpMobROblyhV.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/1m3uOVyv35XpMobROblyhV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a687fda84daac15974467f5c18fa7eac98a987d2220ae611a2e70ebbc8967a. 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/666R7qKDCnnJ368rZXgU1g.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/666R7qKDCnnJ368rZXgU1g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230af4ae5c842a98081998cc0717161861b0e6fdedbda997580af6deeeb6f454. 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/6iOSyZGzNAuFyFwIsDKJ7w.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/6iOSyZGzNAuFyFwIsDKJ7w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0585d03fd790def8abc85090c6b9498825a2116ea9a439a536f9778afc6e7247. 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/58ySxQtOOnBnos5xr5R9hc.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/58ySxQtOOnBnos5xr5R9hc.
{"copyright_id":"0x1ce551e36bc1bc01305499505394c5bddee409949c738dec4dbf3a12fa9679cc","isrc":"USMAR1610907","name":"Ay, Mamá Inés","registered_at":"2026-06-05T16:37:16Z","spotify_id":"5eeZItvyhs0zNAN17uDnPM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce551e36bc1bc01305499505394c5bddee409949c738dec4dbf3a12fa9679cc. 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/5eeZItvyhs0zNAN17uDnPM.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/5eeZItvyhs0zNAN17uDnPM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e5283407363f15f2f5e9e3360780c42ca237e6122c59aada6fbc451e145551. 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/3bFxfAP9TfEHpVcAnYN0ii.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/3bFxfAP9TfEHpVcAnYN0ii.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acf9f5ae2fbd2a24871d49ec2386605f397c56834ed811a820e582747234857. 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/1Qo83GkBZZE5OSYL6ET5cW.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/1Qo83GkBZZE5OSYL6ET5cW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076bbc731771fa4f3e5b71160f750091035a0118caeb5e27aeee459d1af43263. 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/2w6ucxW5VAyxRQwaAi7U48.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/2w6ucxW5VAyxRQwaAi7U48.
{"copyright_id":"0x3be27d3db9446bf511f34dac5051b3cd8b126ee204c31f366befeca075a71df8","isrc":"USMAR1610911","name":"Adiós Nonino","registered_at":"2026-06-26T23:04:37Z","spotify_id":"7dUZWDjbkcHRJqILdBkxsD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be27d3db9446bf511f34dac5051b3cd8b126ee204c31f366befeca075a71df8. 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/7dUZWDjbkcHRJqILdBkxsD.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/7dUZWDjbkcHRJqILdBkxsD.
{"copyright_id":"0x2aeb7e993b2d3f276a1a2cc4b856f7648f378faafa528b618795ee9ee7a85ad8","isrc":"USMAR1610913","name":"Ay, Mamá Inés (Remix)","registered_at":"2026-06-21T00:45:08Z","spotify_id":"6UoD5Xg5f604fbNKXNTcRl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeb7e993b2d3f276a1a2cc4b856f7648f378faafa528b618795ee9ee7a85ad8. 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/6UoD5Xg5f604fbNKXNTcRl.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/6UoD5Xg5f604fbNKXNTcRl.