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 0x466684ab6bf787a0ccd0b0faa96a827b10c967e0f32a25128e6e41132b2d5438. 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/fa8d7359-be2f-4047-b37f-d95b6915f532.json and https://artists.proofprofile.net/proofs/artist/fa8d7359-be2f-4047-b37f-d95b6915f532.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 0xf8209bdd8a667f9f5cd54112553e8b1963f11a62fc47bf198df51ed9b5482c22. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CACWV2497537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a3f29eb9d306a8ad4b3cd4a81e82a47662977ba5185b545e8c8f6a10b1175c. 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/CACWV2459635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf570a6d39a95bccfbcc9e8aa246d6aed7021bc97092d0ae1882215a14d32434d. 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/QM8DG2494717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4461fbc881bcdc1ed87a037539c7918bc7f1eae5a3a16fc7af210e16db3a89. 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/QM8DG2448481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6a35597da159da663ce62782e444039ec3d1478d4a49373f2e68340fca9c08. 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/QZFP52414245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf03f401323ac6bbd32dd19dd0a436cffe00fa3d5b0e9fda4ad00487272522a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA092442525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70937a4361e7ff98bff3a8bde31b502d629fb881fcf322bb48e7077b44db4f7f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DGA092442526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5735dd4f4433aa787068103ccd1c52690a7a678d794ccb43d1d91bc8631a2a54. 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/DGA092442527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f83c726ebf0ee9e363aa6e831124254e41023141f9882371a5f2450aa531d53. 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/DGA092442529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfa794591d7e4447c818cd5c3cc245486d455b581675581a98ad775054a5166. 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/QZMHP2501037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262e475864a0b879b81e929ad934f412afbf5ec2facb77b3c0ca670834ecf63e. 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/QZMHL2569004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce41d4439ac0e99ba7325546c23124540d1dc1c476d33f5edd03b353ad482184. 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/DEPI82451803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf4e6d676d87ba05060d121803943a9b540deaf7908b34eddadd023f271d3e6. 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/DGA0L2458572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6295c2841ccdeefe506cdd15c1f49973c1b301786b1d6e4b2fd895067010c45. 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/DGA0L2458573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf03f401323ac6bbd32dd19dd0a436cffe00fa3d5b0e9fda4ad00487272522a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA092442525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea62d43cefd27bca48c2030a98fdb68cfef9d95a462144722f9bfcfa10c61a4. 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/QZZ8A2418438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b7da9c533f53a9caf531fb1dfc90acf4a96503e2888cd1d897b8996ed10c94. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEPI82412945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60187775056b3607324e30431a5683c54708da1cc7ae2d828d6dc852789228f3. 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/DEH742409504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b54bfdceed3a3c7d3059dbc49d721e2836c6b6f0cbdbf0b2cf23d1a9410d5a4. 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/QZS672456603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927461fbff3a2ced2e2866677514ddcf5dced6b15162f871191efa38af7ee15d. 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/NLCK42400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fa78c38b111360c58c5f56e9b7fa5766b319c15509887cb1aeb9e2336bb4f7. 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/NLCK42400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e59045fb66f735925c4b8f62263163e511f9690404c3a1d4a0671ec7b21a91. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMHL2263890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe857a74aaa9222ded30819dffd76b536ead1449face29cf776d0fd904f1be60. 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/GBKQU2387440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6031f7f22d184508ddbba68781f7b2d5f5f4ede067369462ad8ade4946ac6d26. 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/QZMHP2324512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee74b7a0877d7a6c1837a782b21c16afc6eeb799e49d771bcd6240feb4df043. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZMHL2316997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8213e257e488061b7b01b45d44db72fd20eb3f83c4667eefaaadf3a4f3592f1. 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/QZMHP2387594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254b82e35b164abc12dcbffdd3a23f2d570057efa8077e1341c71669448415d7. 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/QZMHM2205407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966cf51ac31de83236ace3e9915b43d2f1396fc2916753abdde4b3ceab692667. 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/QM8DG2446164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498b2ff2b74fe1e2e9ced46e2b6ad540cc563649cfabff4bb3ed4a2c5727ccaf. 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/CAHQJ2457631.