1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d250651baa30b08b0fdadd9eef08d526e6d9250e9ec820b8b660693c1ac101. 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/d337932f-da68-49de-a609-ecf7b2c65529.json and https://artists.proofprofile.net/proofs/artist/d337932f-da68-49de-a609-ecf7b2c65529.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517f22de2b707f0e98ad3f6d6a46b859e796c46855fb8fc4a8b0c80b5e4ebc63. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SMRUS0068228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61b774dc29bd76275552b0fc1371a9031f0e763737f131be14f51c10a2e49c5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SMRUS0068235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c2ec10facf8fcb96982d0930611cb8f733e1d04ee575e27a9a4ed3cb4699bc. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SMRUS0069019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e5ac8439d26175ab0c51efbf013fa7b66ebafeb94f8f711bcf29ee6d2634f3. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202203735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ac6daaca1fa0f5296bc29eeaefeef1d51fbabd12f79c978e3ed36447e37c4d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062238684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa71089ef9f9930a6f47b260160d586d63409078020b201a35c6ac3b90c1f46f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062238685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e95185e898431cb0168207fbd0acfefc31b85b813a4b5c3fe9b4e6a56c096bf. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062238686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f010d6134fc568a1899bc4e097aa6b0d703bd9582c577ad1f091d17598227f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062238687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf05441357564d96c77795a6814cbdad57cb4a86839dbb2c97cb38ec3c6a0c7e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062238689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e459440fea7db3be25fac8aa810a855a197dbeced832e063ebe5c5358032b45. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062238690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6f8db267d16c13a410e1980c8365efc9e377a68cd97e4d4927ff89c06b7404. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202364021.
Целуй (prod. by Msblack & Lightkickbeats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8325521d106e4b4101a9a68206b04584ac457a602c0af4c7b4b7ceda8a5f82. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656ccb3d19266504675a60279d3f78dfcb07ede26fa6ad8130deaee132bb0000. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f454900d1e64b55395ee0cc2f02f75592a3e047a2998ce1cd1da8200070775. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63173d247f9fed65e7830181cb0652c18a35400a7961ff2dc2dd9739824b2369. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4e40d1ce3343bc497968ea83d51cafa89186451fbe47e3bb37ebbaa765ed98. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9778d064603dd582e4dfb0914a01ae5a4d94cc09fa245fd2f465a47b04aa2f71. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ced9de179fa960dfe30cb3d17fc8c02057ce11ec1981dd1c5483c01fd259f18. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6a6c93d10ca0e268f3023f19c5b8f526a2a33095330285f14e32173f662a0b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9812aad779f37e15fb4b476e5120d196ae4899fb12e3853b0b62c0f130f7c915. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533b0afb8cbe374921b9f5b02b5dbbe386353474cd17c02872f0ef8859e3ba87. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8867e742dfad6b456754a0f9317ba9a61e1618015e5ce936215f1399003ce7b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1216bae9e36393efd775a2fc6597cf7ba67cd2dfef02db152a28740fff9a30bc. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422302127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf881465ee4108714d1c3e86ece86b8e78c91284fdaf8b60fb19cc4dbfa4b30. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2427102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40b010a26ee502ca0715986ba6ecf4f306d70584def8459aa3f15edd514c691. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGT2458234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9d185bc5ea97703a0f2a222b9b4db745aafb1cfbec5dd860de8b1f9a3a68e2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGT2458236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b7bd57635810d181eb43e6861cf1684d8122a5edefabd0b63239301dc482a8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGT2458240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780b69106888488e4048ac127d2320be68eb1da6fd4076012b765b65e9692348. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGT2458242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9e9b630a3b0a590176a1f48b9461c71efd4c5f526a61a37138e70eef06a787. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2469164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c4442a8e71345741ee8696bc8fa48189dfd1809b961b9ed0a5cde0a8dc9b9b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGT2458245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a5a9c07ff985fb953b437143a8ce929f4d39a63f95c7d4c413929c597bc377. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGT2458247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80a3770fe0579f4f0d07d5c2f1bd7505438f591a255353badf697221f36b032. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGT2422171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea588636f9c93c9d1bdb35ae4c4c18c6717c8a5da4ffe7356d892a4825fdf5b2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGT2458250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d8bd7999effec898c6bc6b867d9e15888e6f2347fba1b69de0aec09458e435. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422404203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6630105c229efff15b5e757dabe6c6ecc65a82b17f015977eb84ded9412895. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422502899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8f5e9f758521493c45a82eeb1966efb88555f05fbb85ac97557769e8595321. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB422502900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631657538dd85543267851ce24f82941bbbf9ecf63ae9851b5de7dc9b08439b8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2271743.