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 0xa1c826a7cc264c0093f8852bebef1e601de87d9e0064fdd9f7fd58ce2a099c18. 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/e6aa7619-5165-40ee-a0f3-cb52bf50c6e7.json and https://artists.proofprofile.net/proofs/artist/e6aa7619-5165-40ee-a0f3-cb52bf50c6e7.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 0xc3521073f2fc28ff75249ba2079735b0d76f76500b3cc7b14f98723b5249e68a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNMY2139039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7efec333435e94d87aead8ee2db09298a10f9e96f830b23267e0d64a1bb928a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZNMY2139040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cd5f1bdb84b3801b2a42ac45098e58e070b77266b8ae96a897fb8196410805. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNMY2139041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46570766b99f1ee69944ab812849927a07ac9ba70f8c738c8ba11d0b6d89b61. 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/QZNMZ2155271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984c311c695dcb8aa40c863cc5cc7a00e8409dbc5ff5a866277faead948cddc8. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZ5FN2294629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f33bdde3dfebe6cef7c41d351168da92e8ab103b022fb10c457c9e34eb2f052. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBWUL2200846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004efa68e76c942453847d0cfe91613433295ca1159563f33ddc50553ed080f7. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/QZ5FN2372539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554c74e3166b6a49aae2b90ce581eded9fca16f55a8bddc0d56f90a9ae5d680b. 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/QZTRX2325240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ab61b8ad702ad672682665975174f02a4b08824914d1001cfbdd0f2eae663e. 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/QZTV32340728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d32d871a0a6db4ee43076039ab7515445c63d130aa7792f850ed8f56ff528d. 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/QZWDD2346376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0509cb3cc024846dde23176bb8eda711ad104010334b8e15fa1e06a34b99158b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZWV32383778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf616c5c1c6ee3b9ba9d31cc4e1ac280767e48460be168cd039f5abdb291104d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZ5FN2465264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f917321d43d109087d11b13de489c7004767420db19739ae0f2e224b336604. 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/CA5KR2439279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348eafd8390f96517d3dcb59e8afc65594a4fbe92c97240365cd22fc68e7832a. 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/QZWDD2490640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b6d809ddcb25d14a629b2f35e2146f66e13161d5ecd68c19d4e15ec3b54506. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWDE2429922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c370b0562af8400680148b1a524db4c9617e486e0aa96252fa686a52bb1c5cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWV32414758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ba6eb2b8cffcbbabefd5ac9daa557d04d290bba5355e074d86739125f77585. 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/QZWV32438481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00eed1863b82218e055f8c7b5a596b673a9329d38b5c32793eb1b7a3d685092c. 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/QZWV32456398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bf050d568861aa1a8d102c9108ddc246893c6aff8b71d2a4fe63f74314e70a. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/CA5KR2494382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348eafd8390f96517d3dcb59e8afc65594a4fbe92c97240365cd22fc68e7832a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDD2490640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b6d809ddcb25d14a629b2f35e2146f66e13161d5ecd68c19d4e15ec3b54506. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWDE2429922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93baa5d0b05dccc43d342df5dd350d15c8bf3cb7271819994d920b6b66fa1ddb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDE2441258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c370b0562af8400680148b1a524db4c9617e486e0aa96252fa686a52bb1c5cc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWV32414758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ba6eb2b8cffcbbabefd5ac9daa557d04d290bba5355e074d86739125f77585. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWV32438481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40614aa4ac8904264c21d68cfd820a4cac0617de4c4d917ae26fdfbb5a1b4b34. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWV32437763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00eed1863b82218e055f8c7b5a596b673a9329d38b5c32793eb1b7a3d685092c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWV32456398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df8425d246488d93b171f2f498b38b0dc3c5e51dea37eebf5b6c9ce1454389c. 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/QZWV32456406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1765641147d3a06c5f84d8e15375d43d0928f2554b739188142fdb456db8f38f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZ8B2403353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689a1ad154b952b03126fd12ff74c8ff3bbb9d4bb0cdc85d3ed11b2352649270. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ8A2553563.
Hostage Situation: Burn For You (The Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc907a0967cc6f1b44fc5446ccdf3c106372807a55bbd460eac1079d9229d922d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBUM92400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea162d89726ef10dea1e33a2c9ba9e8f709d436849d572af0ab718c3cd46362. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZK6Q2296955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001cbdaa80082e20ab225fc7a42c3ab26847b473069f50c9ccc4a0bae0a8cd02. 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/QZS642359838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504f2abde1b0a5638630d7df34a84294da3056ab64212efd64ab6d34688b3c62. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTV32416354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c7a619243de6b1baeed863e90e0c10bd1796d69b18442741ef962aee4a1193. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBRKQ2472320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f6f448fa2ecd291fac6b5d20077601fb45f80f3a577d9335846588b195da63. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWDD2382671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c7a619243de6b1baeed863e90e0c10bd1796d69b18442741ef962aee4a1193. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBRKQ2472320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b25f4f0b8ca8a6262a49689f7f4059d851a2370799f011178226a262f99015. 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/USLZJ2316883.