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 0xdee74480d67fd99c2ce7a0c793ecb3ef598baab58b5d3fb7a49cb98b35c24575. 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/e3a1743f-3d18-4e1c-97a2-d6ad8354fa91.json and https://artists.proofprofile.net/proofs/artist/e3a1743f-3d18-4e1c-97a2-d6ad8354fa91.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 0x3ee8473351956863207b2e16fe91b49f4ff8d3fe786eac0805e0229e71785457. 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/ES71G2116029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c042e698e92cee1bd892942171b82c9f36463a145edfbb2f9875ca712a3a292. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/ES16E2300595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8233a073222443fea247d429e1206ae3be6426ebd2ca601527685e48283c101. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ES71G2239700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee8473351956863207b2e16fe91b49f4ff8d3fe786eac0805e0229e71785457. 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/ES71G2116029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef1747d8e9039e17037abf7c662a52909690c4abc3931d6fe4863d28812af84. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2211388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd63c01541d6422529f9f4af1ae15606945f7420f332ce2a073a33a835617ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2239711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428d02608541c48c130ec87635a77f91d1a1e722b2a15c408cc4e3108abec649. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6081741502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc1b9b3b690da8acd20c8f1fb62d1850250a8fa2aedfc8413b9dfb2f9b71127. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6081741505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58292c1cc74fd23b3befc74c57ef1aea85dd92cd651939e26574cc3a96fb969d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES6081741507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81100fd545ff4a6048c5984c77d230d04b074ccb4993724a81d5bc575cbbade3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6081741509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7891fe53a913ac33e7943750d76bd9ee520f0472c1e5148f021df1a798b9dc19. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6081741510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f939c9f85c9689c3b4f587dd0286f4d749515de28d6bc3135d888d993827c3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6081741512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da857314ee7aafa82ab5ba8ed20ba433bea7897594b4c8932110f48935e8b0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGJ1503285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7fbeb34db2f0528c120d8835d35003f8cf686b6a8dd5bf07106c4ab634aa6b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGJ1503289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf585d4728d7b1463970778cb35eee0b2e91bc0a92bccb725338188a5f99aff5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2305966.
Children of the Moon - Larse Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881bb26a5987f08e80c74052391914cc8e094acd8e817968d9c4946958786280. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2305968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370e9efa5d375fe07429c9c6027b9fd5bd65df95094240cd5da070b9c4eae4c7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX762285766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bead721190be6089b5fd55ebcf191f28f2322f6ffa17bda6b6990c235ecea98. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES71G2050950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dea1496e962f0832f5c814e8465aabd77ae0462dff86f5229862246f41880b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ES6082010801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804eb70702db91ebe413dcf545461c7aef0fa825c466f2442d7111cad6de22a9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKR6V2050240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c308609e96f905b78b644925f8c54c28275b7eeae152274ab5eac52fdfebff. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QM4TX2066339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a30473d89b6a77a29264b8a09d1b84ac60ee291fc6c65a1bfefd8f5b9847eda. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FRX281977322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22fc6bbb72506b79a9c57c6f9fae664c3d48c41ac229a5666f2ebee091c1f25. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRX281977323.
Expert (Canción Oficial del Spot de Movistar Expertos en Fútbol)
Expert - Canción Oficial del Spot de Movistar Expertos en Fútbol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa0ad079d098db2e1f4ec732a3ecb699553b55a18d7c91426fda101ca86387d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G1932509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993da18f02fe1716cbdb0ceed21efd018c69e1fa1a3654e536759946fbf833cd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ESA011914332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca1e998d4ef838af6b468b45fbb442d2bf903b970cc4567f6209399984da0e9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ESA011914334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790e74232b1108753ab8204fbe24c709ea83b8e50451ccfd3190ad0058556188. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ESA011914335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb013a0456cb33dd32d3ee9f32c972c0452ced04bc6d34a2a037321cd0f791ab0. 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/GB8KE1859393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137f2fd47f118e13db004ff057c98e2354a20371b363a371f81855f4548772e4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GB8KE1859394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3550d1c1eeb6bfe9811342411f47d0207f51b51b833e3ce4c9c0418e0c47012. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB8KE1859395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d777d24f4a025e8a68cf985147a059d6929694e689488bb08b824b4d38b1748. 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/ES6081940101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820c1d64456f18631bb44bcc291f08a57bf488b6489f540f06a19332317a4bf2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6081940102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b33f0d69643ad1382859f317595f4010b4aaf18bbe56503c1f4b93353717fa0. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TCABW1423926.