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 0xc5555cad70d1defc0f25835aad719f7c557d2a4a685916748d1d470dcc4076fb. 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/7556e58c-4b21-4991-8330-3699272f59c4.json and https://artists.proofprofile.net/proofs/artist/7556e58c-4b21-4991-8330-3699272f59c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x6e5ecbeb5ffc506ec46963d64dc51a741282e003980a53d4ca335fce0bb89fc1","isrc":"TCAFY2148452","name":"Hareini Mechavein","registered_at":"2026-06-10T06:43:38Z","spotify_id":"4X5gUZ5fmiewMnWPKFuuE1","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 0x6e5ecbeb5ffc506ec46963d64dc51a741282e003980a53d4ca335fce0bb89fc1. 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/4X5gUZ5fmiewMnWPKFuuE1.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/4X5gUZ5fmiewMnWPKFuuE1.
{"copyright_id":"0x3fbd39eccf3caf85a12e5ccdbb3a79e19a1a957438f1bbd077ade80f09274989","isrc":"TCAFY2148310","name":"Lecha Dodi","registered_at":"2026-06-05T09:39:11Z","spotify_id":"3rjpaHauS05qHKFF1BMUMS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbd39eccf3caf85a12e5ccdbb3a79e19a1a957438f1bbd077ade80f09274989. 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/3rjpaHauS05qHKFF1BMUMS.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/3rjpaHauS05qHKFF1BMUMS.
{"copyright_id":"0xed58776d27e6ca823ab4226f86b89a712066e361fc87eca2eed4c28e313a99d4","isrc":"TCAFY2148311","name":"Melech Malchaya","registered_at":"2026-06-07T21:41:53Z","spotify_id":"40u1GKmHSOFiUsxTlit2Ec","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed58776d27e6ca823ab4226f86b89a712066e361fc87eca2eed4c28e313a99d4. 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/40u1GKmHSOFiUsxTlit2Ec.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/40u1GKmHSOFiUsxTlit2Ec.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf4d740c516cafd8007e42f7eeec332b0488b7b62421aaec2c211ca8b9cef5. 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/3qozaoCm4JTwZWEYvFhrW1.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/3qozaoCm4JTwZWEYvFhrW1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a8b57b921ee65145a0c85cd79637c33f4e12f36006d8c955c43759692bfcce. 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/534piMWDTcCq1G4Csm0T2O.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/534piMWDTcCq1G4Csm0T2O.
{"copyright_id":"0xb1606414f032288bdab4bfad1ff215726ef7c4553ba7b490bcddfac2cf3d5f79","isrc":"TCAFY2148382","name":"Niggun Waltz","registered_at":"2026-06-08T21:50:51Z","spotify_id":"3p01bnuvRJ2ZovCSnmgQVJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1606414f032288bdab4bfad1ff215726ef7c4553ba7b490bcddfac2cf3d5f79. 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/3p01bnuvRJ2ZovCSnmgQVJ.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/3p01bnuvRJ2ZovCSnmgQVJ.
{"copyright_id":"0xc9f7e00df1be27874b16b7fc5eb3ecc1a9ce0fb67c1228a28a82fa665db95a6d","isrc":"TCAFY2148395","name":"Ke'ayal Ta'arog","registered_at":"2026-06-09T20:04:35Z","spotify_id":"4eAIY2cdP0EIh5uUtMmR8d","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f7e00df1be27874b16b7fc5eb3ecc1a9ce0fb67c1228a28a82fa665db95a6d. 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/4eAIY2cdP0EIh5uUtMmR8d.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/4eAIY2cdP0EIh5uUtMmR8d.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e6f99b4360c9318f3dba4f5e76d8191bed89b7fc58347c5f69926ffe966b86. 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/3ykKmcRJ5t3fQMqEnypopd.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/3ykKmcRJ5t3fQMqEnypopd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac68331c7d80e14a5cc1da7aaefc3dd7c9bae749ecb17a291250a673929b480. 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/7cvkhyqeG2WfsknALrwBnS.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/7cvkhyqeG2WfsknALrwBnS.
{"copyright_id":"0x6e0d17128a4ce97e78aadb0859d0ed5ec58494e604b38777e1660e1721e76637","isrc":"TCAFY2148416","name":"Chicago Chevra Interlude","registered_at":"2026-06-20T11:06:37Z","spotify_id":"4G5ZSlhavo3YSun2mDxFIC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0d17128a4ce97e78aadb0859d0ed5ec58494e604b38777e1660e1721e76637. 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/4G5ZSlhavo3YSun2mDxFIC.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/4G5ZSlhavo3YSun2mDxFIC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828942e0977d18afd437e2e0d73e4dda8b46f85a3ce3b9147b17964447301f2a. 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/7nPUf8UEZEtdfH3dxtMSFd.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/7nPUf8UEZEtdfH3dxtMSFd.
{"copyright_id":"0x43793fc5597aa2659645236aa3aa06d78bef43ca9c6761472c3bcc73dbcbcc91","isrc":"USCGJ2034075","name":"Anim Zemirot","registered_at":"2026-06-24T21:22:07Z","spotify_id":"3XKtQ0OjNx4CS1QtiyLHRu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43793fc5597aa2659645236aa3aa06d78bef43ca9c6761472c3bcc73dbcbcc91. 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/3XKtQ0OjNx4CS1QtiyLHRu.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/3XKtQ0OjNx4CS1QtiyLHRu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d73644ce356b0628eece863057f55347ee54cba2c66b0fdc1ba5df79847998. 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/7Cw0H85dUZTyym9XUjNzF5.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/7Cw0H85dUZTyym9XUjNzF5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669cac36dd4aa5c6057d247231efac1529e27f3bff8586b83e43f16d8120306c. 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/3JU2erTxLX6jBG1VGgXpbL.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/3JU2erTxLX6jBG1VGgXpbL.
{"copyright_id":"0xc9103e7eacfbcc26114561b2eac5e7ff30cc1e6acdd632c9e887317729ad8f56","isrc":"TCAFR2175664","name":"Mi LaShem Elai","registered_at":"2026-06-04T16:01:06Z","spotify_id":"2ixsnV8U2iS9aszEWbgId4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9103e7eacfbcc26114561b2eac5e7ff30cc1e6acdd632c9e887317729ad8f56. 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/2ixsnV8U2iS9aszEWbgId4.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/2ixsnV8U2iS9aszEWbgId4.
{"copyright_id":"0x678a4a73cc3376df29b944cbcc959c8e050cc265b0883e6be1cc0dd8f27ff61b","isrc":"USHM21759343","name":"Baruch Hashem","registered_at":"2026-06-19T17:14:52Z","spotify_id":"1GFnR87pC2k3IxECbe1Hky","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678a4a73cc3376df29b944cbcc959c8e050cc265b0883e6be1cc0dd8f27ff61b. 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/1GFnR87pC2k3IxECbe1Hky.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/1GFnR87pC2k3IxECbe1Hky.