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 0x91955e8f646ef0890df9b437a917c69957c88258cb203ca399a8536c5f2a7369. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/045d4ccb-5bf1-4bd6-abb8-470d7e74f55a.json and https://artists.proofprofile.net/proofs/artist/045d4ccb-5bf1-4bd6-abb8-470d7e74f55a.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 0x54411abe3f54981d7d1173be1af33a6bdf8df7bd89b87d439ff05eb2ad73bf88. 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/4eNUsQory26KNwcA4nVK87.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/4eNUsQory26KNwcA4nVK87.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a153c81b40b56ab6c49f096a27d23631e1a03da758356e6ec3f1a6e56af5327. 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/0PImEtenba1318UQSlkmeP.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/0PImEtenba1318UQSlkmeP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc85d4d5a10384b3808ad0d187562ed77404b27387ea20ca12f256f241931687. 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/6izFVdK2q2MEVRBuugSKek.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/6izFVdK2q2MEVRBuugSKek.
{"copyright_id":"0x18783d0c191c44d7578d63c52b9ea9b03841d84f7a9bb239896b09bcd81fd7f3","isrc":"USCG62000008","name":"Vuelvo a ti feat. Lowsan Melgar","registered_at":"2026-06-04T07:57:34Z","spotify_id":"2FEuDd55ffTmNxy00KRoyN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18783d0c191c44d7578d63c52b9ea9b03841d84f7a9bb239896b09bcd81fd7f3. 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/2FEuDd55ffTmNxy00KRoyN.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/2FEuDd55ffTmNxy00KRoyN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d255620da9f8921c7395e0b507411c7f104b9bd1d0a29c0627d91c5dcad209e. 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/1ueqTVeBld9lAJr3V5Tqrr.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/1ueqTVeBld9lAJr3V5Tqrr.
{"copyright_id":"0xd4bce84e72ef8a252b66ad4bf9730bcd328c0fc4d8b8aca72c58c857ecac59ea","isrc":"USANG2032964","name":"Creo En Ti","registered_at":"2026-06-08T19:40:21Z","spotify_id":"6vyuc1I4lpejsZJd8vu6hD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bce84e72ef8a252b66ad4bf9730bcd328c0fc4d8b8aca72c58c857ecac59ea. 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/6vyuc1I4lpejsZJd8vu6hD.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/6vyuc1I4lpejsZJd8vu6hD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9ecfa96ecdee4dfe14421a9c3332cfe55063a61901f0d977289e3a3292b77e. 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/14gjh6WGuInwynb2aXbGap.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/14gjh6WGuInwynb2aXbGap.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227648397a06cb856cff197280f45f210f893337732013dab45a66c362ccd0ed. 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/5b2ldZtkmaCeQMVm8gypBO.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/5b2ldZtkmaCeQMVm8gypBO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c9b72415215084013287ff52f8c7fefcbd38a9782f16d91fd8ef8e9de48eef. 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/1flhzC7FDJhALV6ljTWGGC.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/1flhzC7FDJhALV6ljTWGGC.
{"copyright_id":"0xe9cafccff3b06483e6eb895f05f7bf55d5d257bd41d9523d9b3664fa66a312f6","isrc":"QZ2J21502766","name":"Incandescente Luz feat. Lowsan Melgar","registered_at":"2026-06-10T20:14:32Z","spotify_id":"53u9tqa9TAvb6sRT8UOWaQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cafccff3b06483e6eb895f05f7bf55d5d257bd41d9523d9b3664fa66a312f6. 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/53u9tqa9TAvb6sRT8UOWaQ.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/53u9tqa9TAvb6sRT8UOWaQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4396b6467c77d929c7a0322789bef8620ef72766f530edbaf841f406e565fbc. 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/3ZUjKNr1D20AkzMWowOhf6.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/3ZUjKNr1D20AkzMWowOhf6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687729d0447875e77e8ca1229a252d3e558c61554e87419a65a02cd9c9e2b581. 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/7HICecFmLPyhpm0v1aBfpw.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/7HICecFmLPyhpm0v1aBfpw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4bf3101c771a49609b0fd44f6ee2faf63d55a80518d1ff8bf7973dc51e67cd. 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/6tSW2uLJ3Oo0JEeo2nnPwb.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/6tSW2uLJ3Oo0JEeo2nnPwb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e391cf7902ff4604a1d80ace6c491116260663d5f325b74f78fa6885b43b17. 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/1yvDR7cxU98Zr2VxQ4WZE3.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/1yvDR7cxU98Zr2VxQ4WZE3.
{"copyright_id":"0x4e4120fc853468df113735179de42ddd1e76548e780cb99618b01bb6b159f4aa","isrc":"USANG2490157","name":"Venid Y Adoremos","registered_at":"2026-06-25T22:52:13Z","spotify_id":"7bdPlyBGPiJQjBlkVrYQy4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4120fc853468df113735179de42ddd1e76548e780cb99618b01bb6b159f4aa. 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/7bdPlyBGPiJQjBlkVrYQy4.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/7bdPlyBGPiJQjBlkVrYQy4.
{"copyright_id":"0x086be30fad16da37ddc26e3b9063ffe10a34bb02fc0a89122c24492a3a1e08d7","isrc":"QZGLS2430096","name":"La Belleza de la Cruz","registered_at":"2026-06-09T06:25:57Z","spotify_id":"6kCt9kjXgxrBmPzs2qpeLs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086be30fad16da37ddc26e3b9063ffe10a34bb02fc0a89122c24492a3a1e08d7. 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/6kCt9kjXgxrBmPzs2qpeLs.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/6kCt9kjXgxrBmPzs2qpeLs.
{"copyright_id":"0x8ea95b8411df67b464c61db3711b308bbe0f337f4558e0c3215f5e1dabcb5e13","isrc":"QZNJV2434630","name":"Simple Evangelio","registered_at":"2026-06-20T22:43:11Z","spotify_id":"5adteFttG6r0ATjJXi63OU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea95b8411df67b464c61db3711b308bbe0f337f4558e0c3215f5e1dabcb5e13. 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/5adteFttG6r0ATjJXi63OU.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/5adteFttG6r0ATjJXi63OU.
{"copyright_id":"0x086be30fad16da37ddc26e3b9063ffe10a34bb02fc0a89122c24492a3a1e08d7","isrc":"QZGLS2430096","name":"La Belleza de la Cruz","registered_at":"2026-06-09T06:25:57Z","spotify_id":"4cKJ1Iv4KD7OzMzjcYwYoR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086be30fad16da37ddc26e3b9063ffe10a34bb02fc0a89122c24492a3a1e08d7. 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/4cKJ1Iv4KD7OzMzjcYwYoR.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/4cKJ1Iv4KD7OzMzjcYwYoR.
{"copyright_id":"0x086be30fad16da37ddc26e3b9063ffe10a34bb02fc0a89122c24492a3a1e08d7","isrc":"QZGLS2430096","name":"La Belleza de la Cruz","registered_at":"2026-06-09T06:25:57Z","spotify_id":"2IhcN6gngB11q7aYbxMSx4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086be30fad16da37ddc26e3b9063ffe10a34bb02fc0a89122c24492a3a1e08d7. 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/2IhcN6gngB11q7aYbxMSx4.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/2IhcN6gngB11q7aYbxMSx4.