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 0x2f4b2604c264e029836e02e954fdedf8026092fd5f36ce2fa69695576c52a87e. 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/6c556b3a-2471-4192-b38e-21745d71b26d.json and https://artists.proofprofile.net/proofs/artist/6c556b3a-2471-4192-b38e-21745d71b26d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xfc38ef53da7686d73568c3653ffaf3cc41d8abe7f78a53bcbaab2ef68f16c4cb","isrc":"TCADR1838920","name":"Semilla Solar","registered_at":"2026-06-05T09:16:11Z","spotify_id":"6oObc2zH6XkQiBr9kgADYT","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 0xfc38ef53da7686d73568c3653ffaf3cc41d8abe7f78a53bcbaab2ef68f16c4cb. 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/6oObc2zH6XkQiBr9kgADYT.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/6oObc2zH6XkQiBr9kgADYT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11770355e72070493966cb3604e406f1c474a9e600c1be858428411b5ccb6d5. 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/6YzKjgEoJ8BOssxukjUAea.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/6YzKjgEoJ8BOssxukjUAea.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0482af5dfcfbf4902ca0f6a421100bb6f8c9c3327324d8f878a69097b7453060. 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/4j0mEtDSpLODsHrIQmEtLa.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/4j0mEtDSpLODsHrIQmEtLa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719f5d051a53778216612821c29e3d78cc2d0963c836ca5a9966552d6978b924. 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/3oP8vH4sH7gKqQ1jpVKt3G.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/3oP8vH4sH7gKqQ1jpVKt3G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d64416005f33581c627cb1179f7d1e35def2d3470b861a2b89fef879254a2a8. 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/5Lse6SOfLeXsfsP8i4f6OX.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/5Lse6SOfLeXsfsP8i4f6OX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5855f18413269e694f07ec95083372c7318fe92f97b2721c222987215f08ab44. 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/49dMYVaFxpSHz1hVMu5N9X.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/49dMYVaFxpSHz1hVMu5N9X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa5530f738048e2eee04c0f95cd627b2ca5c64ec8eaa7f06fd4617090564b86. 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/04gLccI5lOC2OiNxmWJNB0.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/04gLccI5lOC2OiNxmWJNB0.
{"copyright_id":"0xbc42c6c3fc1487e50021d7a0928c5bc95f99c8690fcd71144a9a026561cab606","isrc":"USCCW1610658","name":"Maria Sabina - Nicola Cruz Remix","registered_at":"2026-06-10T19:14:57Z","spotify_id":"1PF3emlzD4X8MQr01sLgCr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc42c6c3fc1487e50021d7a0928c5bc95f99c8690fcd71144a9a026561cab606. 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/1PF3emlzD4X8MQr01sLgCr.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/1PF3emlzD4X8MQr01sLgCr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004934121afad52ff56a5530af417320a31d26d029695d3a5847fc1315404a1c. 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/5IdmwGHxSdyPHfjE3eZ6st.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/5IdmwGHxSdyPHfjE3eZ6st.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004934121afad52ff56a5530af417320a31d26d029695d3a5847fc1315404a1c. 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/20igirOOZsZEcO1zDVBwIt.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/20igirOOZsZEcO1zDVBwIt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004934121afad52ff56a5530af417320a31d26d029695d3a5847fc1315404a1c. 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/1FkfiRsiP1ZvYq54xKDP2u.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/1FkfiRsiP1ZvYq54xKDP2u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b30610e2630d9c330efd34bac37c0080cb46d795afc4a0df2d244fa451525da. 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/161Rm5OJbN0jPj095vuv4w.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/161Rm5OJbN0jPj095vuv4w.
Vamos a la Luna / La Rueda Que Mueve al Mundo
{"copyright_id":"0xb00aa86cfa96f0709f7b876e615171e1a6d57614021a2cafc205f85b83aa4ae5","isrc":"AR2MG2000109","name":"Vamos a la Luna / La Rueda Que Mueve al Mundo","registered_at":"2026-06-08T03:21:45Z","spotify_id":"7MlFVRLv7tvoV9YIqyfUJ6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00aa86cfa96f0709f7b876e615171e1a6d57614021a2cafc205f85b83aa4ae5. 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/7MlFVRLv7tvoV9YIqyfUJ6.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/7MlFVRLv7tvoV9YIqyfUJ6.