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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cb2dcb6ac8376499a4ed6dbf9ed3b6b182bed2fa236e6b2c1c6674f0a8053f. 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/346027af-eb59-4563-8b11-0feb7f2f2cb5.json and https://artists.proofprofile.net/proofs/artist/346027af-eb59-4563-8b11-0feb7f2f2cb5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3842a769859cc99b724dcf3489322e033b84ae6743a2d5e38e3bbd2f0c41c269. 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/AUFF02200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a147d22a96fb193b445c68383c64e66eda30f29dee081d45b40bbf2af2e4eeb. 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/GBMVH2100640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14956ba64b4a26610bdae86e4edd480824e38e3765184081030ec120ffa4a82c. 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/GBMVH2200730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8ac2a399a180f849e737efbf9946b92ecad0fd2271dbdc461ac3957f686f6e. 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/GBMVH2200740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426f2c8c4be4b2aa845e4391d56a1690ee97ee2172050a8ae469d86b6c9da643. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLEF82300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e704795ac48e59b22064c676368fc8e1f11087706c809db81253c871af3b03. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLEF82300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbeefcb714bfb6f5af4ee619b894dc6a5e49ffc014419eada21c0670a264210. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLEF82300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd780a5b72e4bdb94c3b46dc7500ac398e5e3a75ed2465fc99374e1acd225a907. 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/NLEF82300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c56615518f128ac276df0081ddbded695456ed018741c214aab01443b3931f9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLEF82300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9534e9bd386581208824d1952c6fbac72299bfe596cbaf871f51c964905a49. 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/USZXT2454485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93c57ca4db9bba8be87eaec6f14277311987dec9ef7cd85e121580ed0421ddb. 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/NLEF82400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8589e23ced5e9cc72840875bd0c1b71244a89749ed1be9a1d4a660d8c7cdc9. 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/NLEF82400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb1a15326ceb4a2460db21eec9d59719769a5e982e05ac8bc72017e97e0c42f. 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/UKN6K2400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9492320d906ca707f218d539d747f1f75db3a76cc16c65628d82f76566a8d3b2. 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/GBKQU2413112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3e15030d80c96033675445896f9c3c3831dbd362e11b52e8988fe2a380bc96. 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/FRIDO2314698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e704795ac48e59b22064c676368fc8e1f11087706c809db81253c871af3b03. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLEF82300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753cec2efe2c1270287b97cd6cd6bd2fae68091047b192a0b2cd834a53af2c5b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUFF02300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6b1c1c6b18bbb6346196c4f09326a122942e9b2c8acbad6921f2059dc207cb. 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/AUFF02300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a598440991c8d659545f1f31fec8b255122ee132d3e2aa38fd89caa4f0c03d4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEG932300457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dac91ac9e4985b2419c3da14ed0b5c41dbc4796a5b5ca5436817db5d21add90. 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/DEG932300455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd938e09fab6ebe96629d2681945b7b9a5a7c51cd1a04469fb8c9836f49c103f0. 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/GBLV62210419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2a950f4250eef5c926cce2f8dd4ab39c55b647179786641a8b5f0366e199ab. 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/GBLV62210053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2d2494c7ff2f7e6808050e493076ecaaa20d4e1a7c4e3146b7c98cc2a1cf38. 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/DEG932202586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec15a1a44d2186f1375db1c0b55e3fded4ea8ba2c95639ea7c0a65f83295a42e. 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/GBKQU2279949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa47cccfa8b3266394daea58ec59d7203dd2255e02814a20ea9b3bad11099a2d. 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/GBKQU2279951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adda3d182859a84ce06644448438a9304e97a6e684151ea13356a6bfacea65f. 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/GBKQU2263112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537b6f51a625ee3bc87156c10f8a16bb3fd49dc2247b8dda9280eb02e6e5269a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2244230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5268f8958fedc550079ec1fe5d5a8bd81607596e62e6e67949ab5a5f9035c33d. 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/GBKQU2244208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb038a949d36c6fad297a5272bf6a7dcdd3ba4ab8b3e863b4c76bcd15fbceabc. 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/GBKQU2244202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cac8a2254e1c45cf978dab1f2d3d75ee10dc0cacff86aa36e5c5d6affcd3f8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQ022111346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adbd677defe7e8fa5df5ea69b1608503405592d4711bc5b3c8926a5c10f6373. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEQ022111347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98e7002fbdc279c25b02d0d8513a920c8189585269671ce212a344ad079cfa8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQ022111348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7617fd3ecf817e696bec17093590900102ff780b59949673cf1c975790e569. 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/GBEFR2108974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b4654d6bc0c9394d98ba661b6415dff2746f699197226f3745b7e16e2dedbb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKN6K2000932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7c48cb27c4c250f88a5afc60fdea12c376941ee2951668934423b14dd8a098. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKN6K2000928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d0c8babf5636bf84794c2e0266d280a347038faf4c90c5ce05ba98e8c68046. 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/GBZSL2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1ddfeb22e1b45a3766cbdd7e58360264ba29c41372e36fe21016013273c9ee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBHLW1903338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5382798ac9a9fa96dae9e4fa58bafc6ec6992ac946bb646f544f8ea7d69b0c4. 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/UK2VX2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02d9db8c84a5afc3c1aa56510e440aca41b43f2f6b9a12375835072c7d3d8be. 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/AEA0U1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9534e9bd386581208824d1952c6fbac72299bfe596cbaf871f51c964905a49. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USZXT2454485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3ac9618bb977b0b8ab693d67263e90fb5adeecef253c75f7a4970757ac7784. 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/USZXT2454486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f45796005612df1fb943d03f7fbd398df9bd2b6d4009db4a8684fecc7d4dba. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USZXT2454489.